5.0 kW Gooseneck Belt-Driven Truck Refrigeration Unit for 4.2 m Box Trucks

1. Engine-Driven, No Auxiliary Power Unit

The Carrier 160 compressor is driven directly from the truck engine through a multi-ribbed serpentine belt. No second engine to fuel, no extra alternator to mount, no additional emissions or service interval — one engine powers the truck and the cold chain.

2. Gooseneck Condenser Keeps the Cargo Box Clear

The condenser is mounted on the front wall above the cab instead of under the chassis or inside the box. The floor and ceiling stay free for payload, the unit is easy to reach for cleaning, and it receives clean, unobstructed airflow while the truck is moving.

3. Slim 250 mm Evaporator with Three Fans

At 1,310 mm long, 250 mm high and 380 mm deep, the evaporator takes minimal headroom. Three high-performance fans push air across the coil and along the ceiling so cold air reaches the rear doors, not just the front of the load.

4. 5.0 kW Cooling Plus 2.0 kW Heating

Cooling capacity of 5.0 kW (≈17,060 BTU/h) with 2.0 kW (≈6,820 BTU/h) of heating covers chilled, fresh and frozen transport in one unit — including multi-drop routes and cold-season operation.

5. A Complete Drive Kit, Not Just a Compressor

Every set includes the high-strength serpentine belt, smooth-bearing idler pulley with hardware, dual-port manifold valve block, heavy-duty mounting brackets and precision CNC hose fittings — the full drive and connection solution rather than parts to chase down locally.

6. Built to Be Serviced in the Field

Stainless steel slotted casing on the condenser, an accessible receiver drier and oil separator, a kink-resistant spiral drain hose, and an in-cab digital controller for set-point changes without opening the cargo door.

Evaporator Unit

• 1,310 × 250 × 380 mm stainless steel housing, slim enough to fit standard 4.2 m box trucks without cutting into headroom
• Three high-performance fans with balanced blades and anti-vibration mounting
• Corrosion-resistant coated coil fins and a slotted discharge grille for uniform air throw
• Ceiling brackets included, positioned to keep the drain outlet at the lowest point of the unit

Condenser Unit

• Heavy-duty stainless steel slotted casing: corrosion resistant, aerodynamic intake, protects the coil from road debris
• Two high-velocity axial fans sized for high-ambient heat rejection
• Receiver drier for moisture removal and system protection
• Oil separator and defrost valve assembly for stable oil return and controlled defrost

Compressor and Drive

• Carrier 160 compressor rated at 5.0 kW continuous cooling output
• Heavy-duty steel bracket, precision machined for light trucks and vans; aligned to the crankshaft pulley to limit belt wear
• Serpentine multi-rib belt and smooth-bearing idler pulley for low vibration and quiet running

Hoses, Fittings and Hardware

• Multi-layer reinforced high-pressure hose with anti-burst structure; R404 / R22 compatible; rated −40 °C to +125 °C
• Zero-permeation inner barrier to hold refrigerant charge and protect efficiency
• Precision CNC pipe fittings and connectors, molded hose with clamps
• Complete fastener and bolt kit; brackets finished with anti-corrosion coating

Drainage

• Spiral corrugated condensate drain hose: high flexibility, anti-kink, low-temperature resistant, smooth interior wall for fast drainage, standard fit for the indoor evaporator unit

The gooseneck layout is designed for a distributor or workshop installer rather than a dealership retrofit. The condenser bolts to the front wall above the cab on the supplied anti-vibration brackets; the evaporator hangs from the cargo-box ceiling; the compressor mounts to the engine on a vehicle-specific bracket and is aligned to the crankshaft pulley before belt tension is set. Because the refrigerant circuit stays short and fully accessible, the system is evacuated, charged and leak-tested the same way as a conventional truck air-conditioning circuit.

Installation sequence

1. Position the condenser on the front wall above the cab, check clearance to the cab roof and body, then bolt it down with the supplied brackets and hardware.
2. Mount the evaporator to the ceiling rails, keeping the unit level and the drain outlet at the lowest point; leave clearance at the rear for the return-air grille.
3. Fit the compressor bracket to the engine, align the pulleys, install the serpentine belt and set tension with the idler pulley.
4. Route the high-pressure and suction hoses along the chassis and up to the condenser, avoiding sharp edges, exhaust heat and moving suspension parts; secure with insulated clamps.
5. Connect the condensate drain hose with a continuous fall to the outside of the box, without loops or low points.
6. Wire the in-cab digital controller, route the sensor probe into the cargo box and connect the power supply.
7. Evacuate the system, charge with refrigerant, leak-test all joints, then run the unit through cooling, heating and defrost cycles and record the set point.

Installation and commissioning manual, wiring diagram and hose routing drawing are supplied with every unit.

1. Drive

The engine crankshaft pulley transfers power through a high-strength serpentine belt to the Carrier 160 compressor. A smooth-bearing idler pulley holds belt tension and alignment under load, keeping vibration low.

2. Compression

The compressor raises the pressure and temperature of the refrigerant and discharges it as hot high-pressure gas through the multi-layer reinforced hose to the gooseneck condenser.

3. Condensing

Two high-velocity axial fans draw ambient air through the slotted stainless steel casing and across the coil. The refrigerant condenses into a liquid and the heat leaves the system.

4. Drying and Metering

The receiver drier removes moisture and particles from the circuit, the oil separator returns lubricant to the compressor, and the defrost valve and expansion device meter liquid refrigerant into the evaporator at the correct rate.

5. Cooling and Air Distribution

Three fans pull air from the cargo box across the evaporator coil and discharge it along the ceiling. The cold air falls evenly through the load space, keeping front, middle and rear at the same temperature.

6. Control and Defrost

The in-cab digital controller shows set point and actual box temperature and runs the defrost cycle when frost builds on the coil. Heating output of 2.0 kW holds the set point in low ambient conditions and protects fresh loads.

Light-truck cold-chain distribution

4.2 m box trucks moving chilled and frozen goods between distribution centres, dark stores and retail outlets — the reference installation for this unit at 15–28 m³.

Meat, poultry and seafood

Frozen holding at −18 °C with fast pull-down after loading and stable recovery between delivery stops.

Dairy and fresh food

0 to +4 °C transport for milk, yoghurt, chilled ready meals and bakery products, where door openings are frequent and temperature stability matters most.

Fruit, vegetables and floriculture

Multi-drop routes with repeated door openings; high air volume and even distribution keep produce at set point from the first stop to the last.

Ice cream and frozen desserts

Deep-frozen distribution where any temperature excursion is visible in the product — the three-fan evaporator and 5.0 kW capacity hold the load through short stops.

Temperature-sensitive healthcare logistics

Chilled and frozen pharmaceutical transport in validated customer cold chains; the in-cab controller provides continuous set-point visibility.

Fleet conversion, rental and leasing

Converting dry box trucks into refrigerated units without adding an auxiliary engine: one fuel source, one service point, and OEM support for fleet branding and specification.