https://www.betheretrading.com/blog/Cold chain equipment buying guides and technical explainers.enhttps://www.betheretrading.com/blog/undercounter-ice-machine-guidehttps://www.betheretrading.com/blog/undercounter-ice-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideAn under counter ice maker is a self-contained ice machine and insulated bin built to fit below a 34–36 in (865–915 mm) counter. Units come 15–30 in (380–760 mm) wide, make about 25–160 kg (55–350 lb) of ice per 24 hours and store 10–60 kg (22–130 lb). Choose a front-breathing model for built-in use and a drain pump if no floor drain sits below the unit.https://www.betheretrading.com/blog/nugget-ice-machine-guidehttps://www.betheretrading.com/blog/nugget-ice-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA nugget ice maker freezes a thin layer of water inside a refrigerated cylinder, scrapes it off with a rotating auger and compresses the flakes through a die into soft, chewable pellets about 10–15 mm (0.4–0.6 in) long. Countertop units make about 11–20 kg (24–44 lb) a day; commercial nugget ice machines make roughly 150–500 kg (330–1,100 lb) per 24 hours.https://www.betheretrading.com/blog/countertop-vs-commercial-ice-makerhttps://www.betheretrading.com/blog/countertop-vs-commercial-ice-makerMon, 12 Oct 2026 08:00:00 +0800Buying guideA countertop ice maker is a plug-in appliance that freezes bullet-shaped ice on chilled metal prongs, making 12–15 kg (26–33 lb) per day with a 0.5–1 kg (1–2 lb) basket that is not refrigerated. A commercial ice machine is plumbed, makes 25 kg (55 lb) to 20 t daily into an insulated bin. Upgrade once you need more than about 10 kg (22 lb) a day or serve the public.https://www.betheretrading.com/blog/clear-ice-and-ice-ball-machineshttps://www.betheretrading.com/blog/clear-ice-and-ice-ball-machinesMon, 12 Oct 2026 08:00:00 +0800Buying guideAn ice ball maker shapes ice into spheres of about 50–65 mm (2–2.5 in) using a mold, a heated metal press or an automatic sphere machine. For clear ice, water must freeze in one direction or flow over the freezing surface so air and minerals are pushed out. Bars typically pair a clear cube ice machine with clear blocks cut into large cubes or pressed into spheres.https://www.betheretrading.com/blog/ice-vending-machine-businesshttps://www.betheretrading.com/blog/ice-vending-machine-businessMon, 12 Oct 2026 08:00:00 +0800Buying guideAn ice vending machine business sells bagged or bulk ice, often with filtered water, from a self-serve kiosk that makes ice on site. New machines typically cost about US$20,000–50,000 for smaller units and US$90,000 or more for high-capacity models, plus site work and permits. Output commonly ranges from about 450 kg (1,000 lb) to several tonnes a day.https://www.betheretrading.com/blog/commercial-ice-dispenser-guidehttps://www.betheretrading.com/blog/commercial-ice-dispenser-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial water and ice dispenser delivers ice, and often chilled water, into a cup by push-button, lever or sensor, so customers and staff never touch the stored ice. Self-contained countertop models typically make about 100–200 kg (220–440 lb) of nugget or flake ice a day; larger dispensers are fed by an ice machine head on top and store about 40–230 kg (90–500 lb).https://www.betheretrading.com/blog/ice-machine-capacity-guidehttps://www.betheretrading.com/blog/ice-machine-capacity-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideIndustrial ice machine capacity is the weight of ice made in 24 hours, usually stated at standard test conditions of 90 °F (32 °C) air and 70 °F (21 °C) water. Common sizes run from 50 lb (23 kg) undercounter units to 1,000 lb (454 kg) modular heads. Expect 15–25% less output in hot rooms, and pair the machine with a bin holding half of daily demand.https://www.betheretrading.com/blog/ice-machine-troubleshootinghttps://www.betheretrading.com/blog/ice-machine-troubleshootingMon, 12 Oct 2026 08:00:00 +0800MaintenanceCommercial ice machine troubleshooting starts with five checks: power and switch position, water supply (open valve, 20–80 psi or 1.4–5.5 bar, unclogged filter), drain flow, condenser airflow and scale on the evaporator. These cause most cases of no ice, low output, cloudy ice and leaks. Refrigerant, compressor and control-board faults need a qualified ice machine technician.https://www.betheretrading.com/blog/ice-bin-and-ice-storage-guidehttps://www.betheretrading.com/blog/ice-bin-and-ice-storage-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial ice bin is an insulated, unrefrigerated container that stores ice from an ice machine. Size it to hold at least half of your daily ice demand; cube ice weighs about 0.5–0.55 kg per litre (30–35 lb per cu ft). Ice in a bin melts slowly and is replaced by the machine, so drain, clean and sanitise the bin on the same schedule as the ice maker.https://www.betheretrading.com/blog/crushed-ice-machine-guidehttps://www.betheretrading.com/blog/crushed-ice-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial crushed ice maker is usually one of three setups: a cube ice machine feeding an electric ice crusher, a flake ice machine that makes dry 1.5–2.2 mm flakes directly, or a nugget ice machine that makes soft, chewable pellets at 150–500 kg (330–1,100 lb) a day. Shaved ice and snow ice come from separate shaving machines, and Italian ice from a batch freezer.https://www.betheretrading.com/blog/buying-used-commercial-refrigerationhttps://www.betheretrading.com/blog/buying-used-commercial-refrigerationMon, 12 Oct 2026 08:00:00 +0800Buying guideA used commercial refrigerator is worth buying when it is under about half its typical service life, runs on a refrigerant still serviceable in your market, matches your voltage, holds temperature in a pull-down test and has clean coils, tight gaskets and dry insulation. Reach-in units typically last 10–15 years and ice machines 7–10, so older equipment often costs more in energy and repairs than it saves.https://www.betheretrading.com/blog/back-bar-cooler-guidehttps://www.betheretrading.com/blog/back-bar-cooler-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA back bar cooler is a commercial refrigerator about 34–37 in (860–940 mm) high and 24–27 in (610–690 mm) deep that fits under or behind a bar. Common widths are 24 in (1 door), 48–60 in (2 doors) and 69–95 in (3 doors). It holds bottled and canned beer at about +1 °C to +4 °C (34–40 °F) and should be front-breathing for built-in use.https://www.betheretrading.com/blog/commercial-beverage-cooler-guidehttps://www.betheretrading.com/blog/commercial-beverage-cooler-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial beverage cooler is a fan-cooled, usually glass-door refrigerator that holds canned and bottled drinks at about +1 °C to +4 °C (34–40 °F), within a +2 °C to +8 °C (36–46 °F) operating range. Shops use upright 1–4 door merchandisers about 2 m (79 in) tall; bars use 15–24 inch (380–610 mm) undercounter units. Wine needs 7–18 °C (45–65 °F).https://www.betheretrading.com/blog/refrigerated-display-case-guidehttps://www.betheretrading.com/blog/refrigerated-display-case-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA refrigerated display case is a glass-fronted cabinet that shows food to customers while holding it cold. Bakery and cake cases run at about +2 °C to +5 °C (36–41 °F), deli cases at 0 °C to +4 °C (32–40 °F), fresh meat cases at −1 °C to +2 °C (30–36 °F) and gelato cases at about −14 °C to −11 °C (7–12 °F). Choose by product and climate class.https://www.betheretrading.com/blog/countertop-display-fridge-guidehttps://www.betheretrading.com/blog/countertop-display-fridge-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA countertop display fridge is a small glass door refrigerator of about 40–120 L (1.4–4.2 cu ft) that sits on a counter and holds drinks or packaged food at +2 °C to +8 °C (36–46 °F). Countertop display freezers hold −18 °C to −22 °C (0 °F to −8 °F) for ice cream. For a shop, choose a fan-cooled commercial unit with LED lighting and a self-closing door.https://www.betheretrading.com/blog/prep-table-refrigerator-guidehttps://www.betheretrading.com/blog/prep-table-refrigerator-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA prep table refrigerator is a refrigerated base cabinet with a cutting board and a chilled rail of food pans on top, used to assemble sandwiches, salads and pizzas. It must hold food at 5 °C (41 °F) or below. Common widths are 27–29 in (1 door), 48 in (2 doors) and 60–72 in (2–3 doors), with 8 to 30 sixth-size pans.https://www.betheretrading.com/blog/open-air-merchandiser-guidehttps://www.betheretrading.com/blog/open-air-merchandiser-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideAn open air cooler is a refrigerated display case with no doors: a curtain of cold air, blown from the top and drawn back at the base, holds packaged food at about 0 °C to +5 °C (32–41 °F). Most are 0.8–1.1 m (31–43 in) deep and sold in 1.25–3.75 m runs. They sell faster but use far more energy than glass door merchandisers.https://www.betheretrading.com/blog/undercounter-refrigerator-guidehttps://www.betheretrading.com/blog/undercounter-refrigerator-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideAn undercounter refrigerator is a fridge built to fit beneath a standard 34–36 in (864–914 mm) counter. Residential and bar models are usually 15, 18 or 24 in (381–610 mm) wide and about 24 in deep; commercial undercounter refrigerators run 27–72 in (686–1,829 mm) wide and 29–32 in deep, holding 33–40 °F (+1 °C to +4 °C).https://www.betheretrading.com/blog/commercial-refrigerator-sizeshttps://www.betheretrading.com/blog/commercial-refrigerator-sizesMon, 12 Oct 2026 08:00:00 +0800Buying guideCommon refrigerator sizes: a standard home fridge is 30–36 in (762–914 mm) wide, 66–70 in (1,676–1,778 mm) tall and 29–34 in (737–864 mm) deep, holding 18–28 cu ft. Commercial reach-ins are about 27–29 in wide for one door, 52–55 in for two and 77–83 in for three, all roughly 78–84 in (1,980–2,130 mm) tall.https://www.betheretrading.com/blog/commercial-refrigerator-buying-guidehttps://www.betheretrading.com/blog/commercial-refrigerator-buying-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial refrigerator is a fridge built for food businesses: it holds food at or below 41 °F (5 °C), recovers quickly after frequent door openings, works in kitchens up to about 38–43 °C (100–110 °F), and carries food-equipment listings such as NSF/ANSI 7. Choose by type (solid or glass door), door count (one to four), ambient rating, refrigerant and service support.https://www.betheretrading.com/blog/fridge-freezer-combo-guidehttps://www.betheretrading.com/blog/fridge-freezer-combo-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial refrigerator freezer combo is one cabinet with two separately controlled compartments: a fridge at +1 °C to +4 °C (33–40 °F) and a freezer at −18 °C (0 °F) or colder. Two-section reach-in combos are typically 52–55 in (1,321–1,397 mm) wide with 40–49 cu ft in total, usually with a compressor for each side.https://www.betheretrading.com/blog/lockable-commercial-freezer-guidehttps://www.betheretrading.com/blog/lockable-commercial-freezer-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA lockable freezer is a commercial or domestic freezer fitted with a keyed, padlock or electronic lock on its lid or door. Businesses need one for outdoor or unattended sites, shared kitchens and high-value stock. Bagged-ice merchandisers hold −12 °C to −6 °C (10–21 °F) behind lockable solid doors; display and storage freezers hold −18 °C (0 °F) or colder.https://www.betheretrading.com/blog/ice-cream-display-freezer-guidehttps://www.betheretrading.com/blog/ice-cream-display-freezer-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial ice cream freezer stores or displays frozen desserts at a controlled temperature. Storage and packaged novelties need −18 °C (0 °F) or colder, ideally −20 °C to −25 °C (−4 °F to −13 °F); dipping cabinets run warmer, about −14 °C to −12 °C (6–10 °F), so hard ice cream scoops. Gelato cases hold roughly −14 °C to −11 °C (7–12 °F).https://www.betheretrading.com/blog/glass-door-freezer-guidehttps://www.betheretrading.com/blog/glass-door-freezer-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA glass door freezer is an upright, fan-cooled display freezer with heated, multi-pane glass doors that holds frozen food at −18 °C to −24 °C (0 °F to −11 °F) while customers see the stock. Commercial models come with 1 to 4 doors, roughly 400–1600 L (14–56 cu ft), about 0.7–2.6 m (28–102 in) wide and 2 m (79 in) high.https://www.betheretrading.com/blog/frost-free-vs-manual-defrost-freezerhttps://www.betheretrading.com/blog/frost-free-vs-manual-defrost-freezerMon, 12 Oct 2026 08:00:00 +0800TechnicalA frost free freezer hides its evaporator coil behind a panel, circulates air with a fan and melts frost automatically with a heater, typically 1–4 times a day for 15–30 minutes. A manual defrost freezer has cold walls with no heater, so frost builds up and must be melted by hand when it reaches about 6 mm (1/4 in). Manual models typically use 35–40% less energy.https://www.betheretrading.com/blog/freezer-sizes-cubic-feethttps://www.betheretrading.com/blog/freezer-sizes-cubic-feetMon, 12 Oct 2026 08:00:00 +0800Buying guideFreezer cubic feet (cu ft) measures internal storage volume; 1 cu ft equals 28.3 L and holds roughly 35 lb (16 kg) of frozen food. A 7 cu ft chest freezer is about 37 × 22 × 34 in (94 × 56 × 86 cm) and holds 185–245 lb (85–110 kg); a 20 cu ft upright is about 32 × 30 × 71 in (81 × 76 × 180 cm).https://www.betheretrading.com/blog/chest-freezer-vs-upright-freezerhttps://www.betheretrading.com/blog/chest-freezer-vs-upright-freezerMon, 12 Oct 2026 08:00:00 +0800Buying guideA chest freezer opens from the top, holds more per square metre and uses less energy: ENERGY STAR estimates about 215 kWh a year versus about 395 kWh for an upright freezer. An upright freezer stands like a fridge, takes less floor space and is faster to organise and pick from. Choose chest for bulk storage, upright for daily access.https://www.betheretrading.com/blog/commercial-freezer-buying-guidehttps://www.betheretrading.com/blog/commercial-freezer-buying-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial freezer is a heavy-duty freezer built to hold −18 °C to −23 °C (0 °F to −10 °F) through constant door openings in a hot kitchen or shop. Choose a reach-in for back-of-house picking, a chest for bulk stock, a glass-door or glass-top display freezer for selling, and a walk-in once you need more than about 2–3 m³ of storage.https://www.betheretrading.com/blog/outdoor-refrigerator-freezer-guidehttps://www.betheretrading.com/blog/outdoor-refrigerator-freezer-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideAn outdoor refrigerator is a fridge built and listed for outdoor use: it holds +1 °C to +5 °C (34–41 °F) in ambient heat up to about 38–43 °C (100–110 °F), with sealed electrics, corrosion-resistant stainless or coated steel, UV-stable gaskets and a lock. Indoor units placed outside lose capacity, corrode and may be unsafe. Site it in shade with clear air flow.https://www.betheretrading.com/blog/food-truck-refrigeration-guidehttps://www.betheretrading.com/blog/food-truck-refrigeration-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA food truck refrigerator must hold +5 °C (41 °F) or below and a freezer −18 °C (0 °F) inside a vehicle that often reaches 40 °C (104 °F). Most trucks use a refrigerated prep table or undercounter fridge, a worktop or chest freezer, and bagged ice or an undercounter ice machine. Choose commercial NSF-listed units rated for 38–43 °C ambient and size the generator for start-up surges.https://www.betheretrading.com/blog/walk-in-cooler-costhttps://www.betheretrading.com/blog/walk-in-cooler-costMon, 12 Oct 2026 08:00:00 +0800Buying guideIn the US in 2026, walk-in cooler cost typically runs about $8,000–$16,000 installed for a small 6×8 ft (1.8 × 2.4 m) box and $12,000–$25,000 for an 8×10 ft (2.4 × 3.0 m) box. A walk-in freezer of the same size usually costs 20–40% more because it needs thicker panels, an insulated floor and a low-temperature condensing unit.https://www.betheretrading.com/blog/walk-in-cooler-vs-walk-in-freezerhttps://www.betheretrading.com/blog/walk-in-cooler-vs-walk-in-freezerMon, 12 Oct 2026 08:00:00 +0800TechnicalA walk-in freezer holds −18 °C to −25 °C (0 °F to −13 °F) and needs 100–150 mm (4–6 in) panels, an insulated floor, a heated door frame and a low-temperature condensing unit with electric defrost. A walk-in cooler, or walk-in refrigerator, holds about 0 °C to +5 °C (32–41 °F) with 75–100 mm panels and medium-temperature refrigeration.https://www.betheretrading.com/blog/diy-walk-in-coolerhttps://www.betheretrading.com/blog/diy-walk-in-coolerMon, 12 Oct 2026 08:00:00 +0800TechnicalA DIY walk-in cooler can be built three ways: assembling a prefabricated panel kit with a matched refrigeration unit, framing a stud-wall room lined with rigid foam and fitting a refrigeration unit, or cooling a small insulated room with a window air conditioner and an override controller. Only the panel kit reliably holds +2 °C (36 °F) for commercial food storage.https://www.betheretrading.com/blog/walk-in-cooler-refrigeration-systemhttps://www.betheretrading.com/blog/walk-in-cooler-refrigeration-systemMon, 12 Oct 2026 08:00:00 +0800TechnicalA walk-in cooler refrigeration system has a condensing unit (compressor, condenser coil and fan) outside or on top of the room, an evaporator coil with fans inside it, an expansion valve and a controller. Small rooms use a monoblock; most rooms use a split system with an outdoor condensing unit; supermarkets use rack refrigeration and large warehouses ammonia plants.https://www.betheretrading.com/blog/refrigeration-compressor-guidehttps://www.betheretrading.com/blog/refrigeration-compressor-guideMon, 12 Oct 2026 08:00:00 +0800TechnicalA refrigerator compressor is an electrically driven pump that draws in low-pressure refrigerant vapour from the evaporator and compresses it to high pressure and temperature, typically 60–90 °C (140–195 °F) at discharge, so the condenser can release the heat outside. Fridges use small hermetic reciprocating or rotary compressors; walk-in cold rooms use hermetic, scroll or semi-hermetic compressors.https://www.betheretrading.com/blog/walk-in-cooler-doorshttps://www.betheretrading.com/blog/walk-in-cooler-doorsMon, 12 Oct 2026 08:00:00 +0800Buying guideA walk-in cooler door is an insulated, foam-filled door with perimeter gaskets, self-closing hinges or a sliding track and an inside safety release. Hinged doors about 0.8–1.2 m (32–48 in) wide suit most walk-ins; sliding doors suit openings from about 1.2 m for pallets; glass merchandising doors let customers pick drinks from the front of the cooler.https://www.betheretrading.com/blog/walk-in-cooler-floorhttps://www.betheretrading.com/blog/walk-in-cooler-floorMon, 12 Oct 2026 08:00:00 +0800TechnicalUnder-slab insulation is a layer of rigid foam board, usually 100–150 mm (4–6 in) of XPS for a freezer, laid under the concrete wearing slab of a cold room. A walk-in cooler can often sit on an existing level slab, but a walk-in freezer needs insulated floor panels or an insulated slab, and large freezers on grade also need underfloor heating or ventilation to stop frost heave.https://www.betheretrading.com/blog/cold-room-temperature-monitoringhttps://www.betheretrading.com/blog/cold-room-temperature-monitoringMon, 12 Oct 2026 08:00:00 +0800Food safetyA cold room temperature monitoring system uses NTC or RTD sensors, a data logger recording every 5–15 minutes and alarms sent by SMS, app or phone call. Set chillers to alarm above +5 °C to +8 °C (41–46 °F) and freezers above −15 °C to −12 °C (5–10 °F), with a 15–60 minute delay so defrost cycles do not trigger false alarms.https://www.betheretrading.com/blog/cold-storage-temperature-charthttps://www.betheretrading.com/blog/cold-storage-temperature-chartMon, 12 Oct 2026 08:00:00 +0800Food safetyA cold storage temperature chart puts chilled food at 0 °C to +5 °C (32–41 °F) and frozen food at −18 °C (0 °F) or colder. Leafy greens and apples like 0 °C at 90–100% humidity, bananas and tomatoes +13 °C (55 °F), ice cream −25 °C (−13 °F) and most vaccines +2 °C to +8 °C (36–46 °F).https://www.betheretrading.com/blog/cold-storage-warehouse-constructionhttps://www.betheretrading.com/blog/cold-storage-warehouse-constructionMon, 12 Oct 2026 08:00:00 +0800TechnicalA cold storage warehouse is an insulated, refrigerated building holding 0 °C to +5 °C (32–41 °F) for chilled goods or −18 °C to −30 °C (0 °F to −22 °F) for frozen. It needs 100–200 mm PU/PIR panels, a heated and XPS-insulated floor for freezers, insulated doors and sized refrigeration; US builds typically cost US$150–350 per ft².https://www.betheretrading.com/blog/reefer-container-sizeshttps://www.betheretrading.com/blog/reefer-container-sizesMon, 12 Oct 2026 08:00:00 +0800TechnicalA 20 ft reefer container measures about 5.44 × 2.29 × 2.26 m inside (28 m³, 990 ft³) and carries about 27 t. A 40 ft high-cube reefer is about 11.58 × 2.29 × 2.55 m inside (67 m³, 2,370 ft³) with about 29 t payload. Both typically hold −30 °C to +30 °C (−22 °F to 86 °F).https://www.betheretrading.com/blog/cold-chain-logistics-guidehttps://www.betheretrading.com/blog/cold-chain-logistics-guideMon, 12 Oct 2026 08:00:00 +0800TechnicalCold chain logistics keeps temperature-sensitive goods within a set range from production to use, using cold stores, refrigerated trucks, reefer containers, insulated packaging and continuous monitoring. Common ranges are +2 °C to +8 °C (36–46 °F) for pharmaceuticals, 0 °C to +5 °C (32–41 °F) for chilled food and −18 °C (0 °F) or colder for frozen food.https://www.betheretrading.com/blog/commercial-refrigeration-maintenancehttps://www.betheretrading.com/blog/commercial-refrigeration-maintenanceMon, 12 Oct 2026 08:00:00 +0800MaintenanceCommercial refrigeration maintenance means logging temperatures daily (chillers ≤ +5 °C / 41 °F, freezers ≤ −18 °C / 0 °F), cleaning gaskets weekly, cleaning condenser coils and drains monthly, inspecting evaporators and defrost quarterly, and booking a certified technician every 6–12 months for refrigerant, electrical and control checks. Ice machines need descaling at least every 6 months.https://www.betheretrading.com/blog/insulated-metal-panels-guidehttps://www.betheretrading.com/blog/insulated-metal-panels-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideInsulated metal panels (IMPs) are factory-made sandwich panels with two steel or aluminium skins bonded to a rigid PU, PIR or rock wool core. With a PU/PIR core of about 0.022 W/(m·K), a 100 mm (4 in) panel gives roughly R-24 to R-26 and a 150 mm (6 in) panel about R-35 to R-39. Walls typically use 50–100 mm; cold stores 100–200 mm.https://www.betheretrading.com/blog/insulated-roof-panels-guidehttps://www.betheretrading.com/blog/insulated-roof-panels-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideMetal roof panels come as single-skin sheets (corrugated, R panel, standing seam) or insulated roof panels that bond a PU, PIR or rock wool core between two steel skins. A 100 mm (4 in) PU/PIR sandwich roof panel gives about R-24 to R-26 and typically spans 3–4 m (10–13 ft) between purlins, depending on load.https://www.betheretrading.com/blog/sip-panels-vs-sandwich-panelshttps://www.betheretrading.com/blog/sip-panels-vs-sandwich-panelsMon, 12 Oct 2026 08:00:00 +0800TechnicalA SIP panel (structural insulated panel) is a load-bearing wall or roof panel made of an EPS or PU foam core between two OSB boards, used to frame houses. A sandwich panel bonds PU, PIR or rock wool between two steel skins for industrial walls, roofs and cold rooms. A 6.5 in (165 mm) SIP gives about R-23; a 100 mm PU sandwich panel about R-24 to R-26.https://www.betheretrading.com/blog/insulated-wall-panels-guidehttps://www.betheretrading.com/blog/insulated-wall-panels-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideInsulated wall panels are prefabricated panels with a built-in insulating core, such as PU or PIR between steel skins, foam between concrete layers, or foil-faced foam bonded to plasterboard. A 100 mm (4 in) PU/PIR metal wall panel gives about R-24 to R-26, compared with R-13 to R-15 for an insulated 2×4 stud wall and R-19 to R-23 for a 2×6 wall.https://www.betheretrading.com/blog/rock-wool-sandwich-panelshttps://www.betheretrading.com/blog/rock-wool-sandwich-panelsMon, 12 Oct 2026 08:00:00 +0800TechnicalMineral wool insulation is made by melting rock (basalt) or slag at about 1,500 °C (2,730 °F) and spinning it into fibres. Rock wool gives about R-3.7 to R-4.3 per inch in batts and boards, is non-combustible (Euroclass A1) and withstands over 1,000 °C. Rock wool sandwich panels typically reach A2-s1,d0 and fire resistance of about EI 30 to EI 120.https://www.betheretrading.com/blog/insulation-r-value-charthttps://www.betheretrading.com/blog/insulation-r-value-chartMon, 12 Oct 2026 08:00:00 +0800TechnicalThis insulation R-value chart gives typical R per inch: fiberglass batts R-2.9 to R-3.8, mineral wool R-3.7 to R-4.3, open-cell spray foam R-3.5 to R-3.8, EPS R-3.6 to R-4.2, XPS about R-5, closed-cell spray foam R-6 to R-7, and polyiso/PIR R-6 to R-6.5. A 100 mm (4 in) PU/PIR panel gives about R-24 to R-26.https://www.betheretrading.com/blog/eps-vs-xps-foam-boardhttps://www.betheretrading.com/blog/eps-vs-xps-foam-boardMon, 12 Oct 2026 08:00:00 +0800TechnicalXPS foam (extruded polystyrene) gives about R-5 per inch, compressive strength of 150–700 kPa (about 22–100 psi) and water absorption under 1% by volume. EPS (expanded polystyrene) gives about R-3.6 to R-4.2 per inch and 70–250 kPa in common grades, absorbs more water, and costs less. Choose XPS for freezer floors and wet, loaded locations; EPS for dry walls and budget roofs.https://www.betheretrading.com/blog/rigid-foam-insulation-guidehttps://www.betheretrading.com/blog/rigid-foam-insulation-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideFoam board insulation is rigid plastic foam sold in sheets, mainly PIR/polyiso (about R-6 to R-6.5 per inch), XPS (about R-5) and EPS (about R-3.6 to R-4.2). Standard sheets are 1200 × 2400 mm (4 × 8 ft) or 1200 × 600 mm, 20–200 mm (¾–8 in) thick. A 2 inch foam board gives about R-7 to R-13 depending on type.https://www.betheretrading.com/blog/rolled-ice-cream-machine-guidehttps://www.betheretrading.com/blog/rolled-ice-cream-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA rolled ice cream maker is a refrigerated stainless steel pan, chilled by a built-in compressor to about −25 °C to −35 °C (−13 °F to −31 °F). Liquid base of about 150–200 ml is poured on, mixed with toppings, spread about 3 mm thin and scraped into rolls in 2–3 minutes. One commercial pan typically serves 15–25 cups per hour.https://www.betheretrading.com/blog/slush-machine-vs-soft-servehttps://www.betheretrading.com/blog/slush-machine-vs-soft-serveMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial frozen drink maker (slush or granita machine) stirs a sugary liquid in a clear 10–15 L bowl and holds it at about −2 °C to −4 °C (24–28 °F) as a pourable drink. A soft serve machine whips dairy mix with air and dispenses it at −6 °C to −4 °C (21–25 °F) as a stiff dessert. Choose by product, not by name.https://www.betheretrading.com/blog/frozen-yogurt-machine-guidehttps://www.betheretrading.com/blog/frozen-yogurt-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA frozen yogurt machine is a soft serve freezer that whips cultured yogurt mix with air and dispenses it at about −6 °C to −4 °C (21–25 °F). A tabletop model makes about 18–22 L (4.8–5.8 gal) per hour and offers two flavours plus a twist. A self serve froyo shop with 8–12 flavours typically needs 4–6 two-flavour machines.https://www.betheretrading.com/blog/gelato-machine-guidehttps://www.betheretrading.com/blog/gelato-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial gelato machine is a batch freezer: a refrigerated cylinder with a dasher that freezes pasteurised mix in batches of about 2–15 L in roughly 6–12 minutes. Gelato is made of milk, a little cream, sugar and flavourings, with about 4–9% fat and 20–35% air, and is served at about −12 °C (10 °F), warmer and denser than ice cream.https://www.betheretrading.com/blog/soft-serve-business-guidehttps://www.betheretrading.com/blog/soft-serve-business-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA soft serve business is built around a commercial soft serve ice cream machine that freezes pasteurised mix and dispenses it at −6 °C to −4 °C (21–25 °F). A tabletop machine makes about 18–22 L per hour, roughly 200–250 cones. With 30–60% overrun, mix and cone typically cost a small fraction of the selling price, so margins are high if volume is steady.https://www.betheretrading.com/blog/popsicle-molds-guidehttps://www.betheretrading.com/blog/popsicle-molds-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideCommercial popsicle molds are 304 stainless steel trays, usually with about 40 cavities of 50–120 ml (1.7–4 fl oz) each, that sit in a brine tank at −25 °C to −30 °C (−13 °F to −22 °F). A filled mold freezes in roughly 15–25 minutes, then a stick holder lifts all pops out at once. Plastic popsicle molds are for home freezers.https://www.betheretrading.com/blog/commercial-ice-cream-machine-guidehttps://www.betheretrading.com/blog/commercial-ice-cream-machine-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA commercial ice cream machine freezes pasteurised mix while stirring in air. Soft serve machines dispense at −6 °C to −4 °C (21–25 °F) at 18–36 L per hour; batch freezers make hard ice cream, gelato and sorbet in 6–12 minute batches; brine-tank popsicle machines freeze 40-stick molds in 15–25 minutes. Choose by product, peak hourly output and power supply.https://www.betheretrading.com/blog/iqf-tunnel-spiral-freezershttps://www.betheretrading.com/blog/iqf-tunnel-spiral-freezersMon, 12 Oct 2026 08:00:00 +0800TechnicalA spiral freezer carries food on a belt that winds up around a rotating drum through air at about −35 °C to −40 °C (−31 °F to −40 °F), freezing 500–5,000 kg (1,100–11,000 lb) per hour in a small footprint. IQF tunnel freezers use a straight belt or fluidised bed; nitrogen freezers spray liquid nitrogen at −196 °C (−321 °F) for freezing in minutes.https://www.betheretrading.com/blog/what-is-flash-freezinghttps://www.betheretrading.com/blog/what-is-flash-freezingMon, 12 Oct 2026 08:00:00 +0800TechnicalA flash freezer is a freezer that blows air at about −35 °C to −40 °C (−31 °F to −40 °F) across food at high speed, taking it to −18 °C (0 °F) at the core in roughly 1–4 hours instead of 12–24 hours in a storage freezer. Fast freezing forms small ice crystals, so food keeps its texture, color and moisture after thawing.https://www.betheretrading.com/blog/how-does-a-blast-chiller-workhttps://www.betheretrading.com/blog/how-does-a-blast-chiller-workMon, 12 Oct 2026 08:00:00 +0800TechnicalA blast chiller works by blowing air at about −20 °C to 0 °C (−4 °F to 32 °F) at high speed over shallow trays, removing heat far faster than a fridge. A core probe tracks the food, and the cycle brings cooked food from +70 °C to +3 °C (158 °F to 37 °F) in about 90 minutes, then holds it chilled until unloaded.https://www.betheretrading.com/blog/food-temperature-probe-guidehttps://www.betheretrading.com/blog/food-temperature-probe-guideMon, 12 Oct 2026 08:00:00 +0800Food safetyA temperature probe is a metal-sheathed sensor that measures the internal temperature of food, air or liquid. Food businesses mostly use thermistor or thermocouple probes; the FDA Food Code requires food thermometers accurate to ±1 °C (±2 °F). Check calibration in ice slush at 0 °C (32 °F) at least weekly and after any drop.https://www.betheretrading.com/blog/reefer-trailer-guidehttps://www.betheretrading.com/blog/reefer-trailer-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA reefer trailer is an insulated, refrigerated semi trailer with a nose-mounted reefer unit that holds cargo from about −29 °C to +30 °C (−20 °F to 86 °F). The standard US 53 ft reefer trailer is about 52 ft long, 98–100 in wide and 100–108 in high inside, carrying 26 standard pallets or roughly 43,000–45,000 lb (19.5–20.4 t).https://www.betheretrading.com/blog/refrigerated-van-conversionhttps://www.betheretrading.com/blog/refrigerated-van-conversionMon, 12 Oct 2026 08:00:00 +0800Buying guideA refrigerated van conversion insulates a cargo van with 50–100 mm (2–4 in) of PU foam, lines it with a hygienic GRP surface and fits a fridge unit, usually engine-driven with optional electric standby. Chiller vans hold 0 °C to +8 °C (32–46 °F); freezer vans hold −18 °C to −20 °C (0 °F to −4 °F). Insulation typically costs 10–15% of cargo volume.https://www.betheretrading.com/blog/refrigerated-box-truck-guidehttps://www.betheretrading.com/blog/refrigerated-box-truck-guideMon, 12 Oct 2026 08:00:00 +0800Buying guideA reefer truck is a straight truck with an insulated box body and its own refrigeration unit, holding cargo at about −20 °C to +15 °C (−4 °F to 59 °F). Box lengths run from 10 ft to 26 ft, giving about 10–43 m³ (350–1,500 cu ft) and 2–12 standard pallets. A 26 ft reefer box truck under 26,001 lb GVWR needs no CDL in the US.https://www.betheretrading.com/blog/transport-refrigeration-maintenancehttps://www.betheretrading.com/blog/transport-refrigeration-maintenanceMon, 12 Oct 2026 08:00:00 +0800MaintenanceTruck refrigeration unit maintenance means a daily pre-trip check, cleaning condenser and evaporator coils every 1–3 months, servicing diesel reefer engines typically every 1,500–3,000 engine hours, and a full annual inspection with refrigerant leak check. Most failures to cool trace back to dirty coils, iced evaporators, refrigerant leaks, worn belts or faulty sensors.https://www.betheretrading.com/blog/choosing-a-refrigeration-equipment-manufacturerhttps://www.betheretrading.com/blog/choosing-a-refrigeration-equipment-manufacturerMon, 12 Oct 2026 08:00:00 +0800Buying guideTo choose between commercial refrigeration companies, compare written specifications rather than brand names: cooling capacity at stated conditions, refrigerant, compressor, insulation thickness, voltage and certification for your market (UL/ETL, NSF, CE). Then check export experience, warranty, spare parts supply, pre-shipment run testing and Incoterms. Ask for two or three like-for-like quotes and get every term on the proforma invoice.https://www.betheretrading.com/blog/cold-room-panel-thickness-guidehttps://www.betheretrading.com/blog/cold-room-panel-thickness-guideTue, 06 Oct 2026 08:00:00 +0800Buying guideUse 75–100 mm panels for chillers (0 °C to +5 °C), 120–150 mm for freezers (−18 °C to −25 °C) and 150–200 mm for blast rooms (−35 °C and below). With a PU/PIR core of λ ≈ 0.022 W/(m·K), going from 100 mm to 150 mm cuts wall heat gain by about a third.https://www.betheretrading.com/blog/blast-chiller-vs-shock-freezerhttps://www.betheretrading.com/blog/blast-chiller-vs-shock-freezerTue, 06 Oct 2026 08:00:00 +0800TechnicalA blast chiller cools cooked food from +70 °C to +3 °C (158 °F to 37 °F) in about 90 minutes using cold, fast-moving air at roughly −10 °C to 0 °C. A shock (blast) freezer continues to −18 °C (0 °F) at the core within about 240 minutes, with air at −35 °C to −40 °C.https://www.betheretrading.com/blog/ice-machine-sizing-guidehttps://www.betheretrading.com/blog/ice-machine-sizing-guideTue, 06 Oct 2026 08:00:00 +0800Buying guideEstimate 1–1.5 kg of ice per seat per day for a restaurant, 1.5–2 kg for a bar and about 2.5 kg per hotel room, add 20% for peaks, then divide by 0.75 if the machine will stand in a hot room. Choose a bin that holds at least half the daily demand.https://www.betheretrading.com/blog/bagged-ice-merchandiser-buying-guidehttps://www.betheretrading.com/blog/bagged-ice-merchandiser-buying-guideTue, 06 Oct 2026 08:00:00 +0800Buying guideSize an ice merchandiser at about 1.4 ten-pound bags per cubic foot, hold it at −12 °C to −6 °C (10–21 °F), choose auto-defrost for retail, and for outdoor sites check the ambient rating, shade, lockable doors and UL/ETL or CE certification.https://www.betheretrading.com/blog/truck-refrigeration-unit-sizinghttps://www.betheretrading.com/blog/truck-refrigeration-unit-sizingTue, 06 Oct 2026 08:00:00 +0800TechnicalWall heat gain ≈ K-value × box surface area × temperature difference. Add door-opening load, then apply a margin (ATP testing uses 1.75× wall heat). A 15 m³ frozen box at −20 °C typically needs about 3 kW of cooling at −20 °C.https://www.betheretrading.com/blog/r290-vs-r404a-display-refrigeratorshttps://www.betheretrading.com/blog/r290-vs-r404a-display-refrigeratorsTue, 06 Oct 2026 08:00:00 +0800TechnicalR290 (propane) has a GWP of about 3 versus about 3,900 for R404A, and regulations in the EU, UK and US are restricting high-GWP refrigerants in new plug-in display cabinets. R290 cabinets are built to IEC 60335-2-89 charge limits and usually use less energy.https://www.betheretrading.com/blog/two-stage-cooling-methodhttps://www.betheretrading.com/blog/two-stage-cooling-methodTue, 06 Oct 2026 08:00:00 +0800Food safetyThe FDA Food Code 2-stage cooling method requires cooked TCS food to cool from 135 °F (57 °C) to 70 °F (21 °C) within 2 hours, and from 135 °F to 41 °F (5 °C) or below within 6 hours in total. The temperature danger zone is 41–135 °F (5–57 °C).https://www.betheretrading.com/blog/types-of-ice-machineshttps://www.betheretrading.com/blog/types-of-ice-machinesTue, 06 Oct 2026 08:00:00 +0800Buying guideThe main commercial ice types are full and half cube (hard, slow-melting, for drinks), crescent and bullet (fast-cooling, dispenser-friendly), nugget or pebble (soft, chewable), flake (dry flakes for food display and processing), snow ice (frozen flavoured milk for desserts) and sphere/ball ice for premium cocktails.https://www.betheretrading.com/blog/air-cooled-vs-water-cooled-ice-machinehttps://www.betheretrading.com/blog/air-cooled-vs-water-cooled-ice-machineTue, 06 Oct 2026 08:00:00 +0800TechnicalAir-cooled ice machines are cheaper to install and use far less water, but they push heat into the room and lose output when the room is hot. Water-cooled machines keep output stable in hot, poorly ventilated rooms but use extra water, and some cities restrict once-through water cooling. Remote air-cooled condensers move the heat outdoors.https://www.betheretrading.com/blog/how-to-clean-a-commercial-ice-machinehttps://www.betheretrading.com/blog/how-to-clean-a-commercial-ice-machineTue, 06 Oct 2026 08:00:00 +0800MaintenanceClean and sanitise a commercial ice machine at least every 6 months, more often with hard water or in dusty kitchens. Empty the bin, run the descaling cycle with a manufacturer-approved nickel-safe cleaner, sanitise all food-contact parts, clean the condenser and replace the water filter.https://www.betheretrading.com/blog/ice-machine-water-filter-guidehttps://www.betheretrading.com/blog/ice-machine-water-filter-guideTue, 06 Oct 2026 08:00:00 +0800MaintenanceAn ice machine water filter removes sediment, chlorine taste and scale-forming minerals before water reaches the evaporator. Size it by flow rate and capacity to match the machine's daily output, install it on the ice machine's inlet only, and replace the cartridge every 6 months or when its rated gallons are used.https://www.betheretrading.com/blog/pir-vs-pu-vs-xps-vs-eps-insulationhttps://www.betheretrading.com/blog/pir-vs-pu-vs-xps-vs-eps-insulationTue, 06 Oct 2026 08:00:00 +0800TechnicalPer inch, PIR/polyiso gives about R-6 to R-6.5, PU about R-6, XPS about R-5 and EPS about R-3.6 to R-4.2. PIR has the best fire behaviour of the foams, XPS the best moisture and load resistance for floors and foundations, and EPS the lowest cost per board.https://www.betheretrading.com/blog/how-to-build-a-walk-in-cold-roomhttps://www.betheretrading.com/blog/how-to-build-a-walk-in-cold-roomTue, 06 Oct 2026 08:00:00 +0800Buying guideTo build a walk-in cold room: confirm size and temperature, prepare a level floor (insulated with heating for freezers), assemble PU/PIR panels from the floor up, fit the insulated door, seal every joint, install the condensing unit and evaporator, then pull down slowly and check temperatures over 24 hours.https://www.betheretrading.com/blog/how-truck-refrigeration-units-workhttps://www.betheretrading.com/blog/how-truck-refrigeration-units-workTue, 06 Oct 2026 08:00:00 +0800TechnicalA truck refrigeration unit runs a vapour-compression cycle: the compressor (driven by the engine, its own diesel engine or electricity) pumps refrigerant to a condenser on the front of the box and an evaporator inside it. 'Reefer fuel' is diesel used to run a trailer's own refrigeration engine, which in the US can be dyed, off-road diesel.https://www.betheretrading.com/blog/glass-door-display-fridge-buying-guidehttps://www.betheretrading.com/blog/glass-door-display-fridge-buying-guideTue, 06 Oct 2026 08:00:00 +0800Buying guideA 1-door glass display fridge is about 0.6–0.7 m wide, 2-door about 1.0–1.2 m, 3-door about 1.6–1.9 m and 4-door about 2.0–2.5 m, all roughly 2 m high. Choose fan-forced cooling, LED lighting, low-E or heated glass, an R290 refrigerant option and the certification your market needs, such as NSF and UL/ETL in the US or CE in Europe.https://www.betheretrading.com/blog/soft-serve-machine-buying-guidehttps://www.betheretrading.com/blog/soft-serve-machine-buying-guideTue, 06 Oct 2026 08:00:00 +0800Buying guideChoose a soft serve machine by peak servings per hour (a tabletop machine makes about 18–22 L/h, roughly 200–250 servings), flavours (two plus twist is standard), hopper refrigeration that holds mix below 5 °C (41 °F), overrun (gravity 30–45%, air pump 50–60%) and your power supply.https://www.betheretrading.com/blog/flake-ice-machine-guidehttps://www.betheretrading.com/blog/flake-ice-machine-guideTue, 06 Oct 2026 08:00:00 +0800TechnicalA flake ice machine freezes water on a refrigerated drum and scrapes it into dry flakes 1.5–2.2 mm thick at about −5 °C to −8 °C. Capacities range from about 300 kg to 20 t or more per day. Seawater models with corrosion-resistant evaporators serve boats and ports.https://www.betheretrading.com/blog/importing-refrigeration-equipment-from-chinahttps://www.betheretrading.com/blog/importing-refrigeration-equipment-from-chinaTue, 06 Oct 2026 08:00:00 +0800Buying guideWhen importing ice machines, freezers or ice cream machines from China, confirm the exact voltage and frequency, refrigerant allowed in your market, required certification (UL/ETL, NSF, CE, SASO), Incoterms, pre-shipment inspection with a run test, spare parts and how the goods fit a container. Get every point written on the proforma invoice.https://www.betheretrading.com/blog/popsicle-business-guidehttps://www.betheretrading.com/blog/popsicle-business-guideTue, 06 Oct 2026 08:00:00 +0800Buying guideA brine-tank popsicle machine freezes 40-stick molds in about 15–25 minutes, so plan on 100–150 popsicles per mold per hour. A small shop starts with a 1–2 mold machine; a small factory uses 4–8 molds plus a mixing tank, pasteuriser, hardening freezer and bag sealer.