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    4 HP 3.5 Ton Air Cooled Industrial Water Chiller

    5 out of 5 based on 4 reviews | Write a review
    The provided industrial water chiller machine is 3.5 ton refrigerating capacity, 4 HP total power of compressors, air-cooled type, tube-in-shell type of evaporator, R22/R407C refrigerant used as standard for efficient cooling. Optional for three phase four wire 240V/60Hz, 380V/50Hz, 480V/60Hz power supply.
    30-day Returns
    Delivery date: 6-12 days

    4 HP air cooled industrial chiller for water cooling system, 3.5 ton cooling capacity, works in 50Hz/60Hz frequency, 3 phase 220V/ 400V/ 415V AC voltage (other voltages can be customized), machine interface configures a full touch screen, which enables automatic control and accurate monitoring.


    • Adopted high quality compressors and pumps to ensure safe & quiet running, power saving and durable service life.
    • Employed microcomputer with easy operation which can control temperature within 3℃ to 45℃ precisely.
    • Unique design for condenser and heat-dispersion unit result in excellent heat-exchange effect.
    • Equiped with electrical current overload protection, high & low pressure switch, electrical timer delay safety device. It will alarm to display faulty while any malfunction occurs.
    • Built in stainless steel insulated water tank, durable and easy to clean.
    • Complete safely devices including power reverse phase, power short phase and anti-freeze protection.
    • Ultra low temperature type of chiller can reach below -60℃.

    Parameter List

    Model ATO-LC4A
    Cooling Capacity 3.5 ton
    Number of Compressors 1
    Compressor Total Power 4 HP
    Refrigerant R22 / R407C (Optional)
    Evaporator Type Tube-in-shell type
    Condenser Type Finned
    Cooling Type Air-cooled
    Number of Fan 2
    Single Fan power 0.18kW
    Number of Cooling Water Inlet/Outlet 1 group
    Cooling Water Inlet/Outlet Size DN25
    Pump Power 0.5 HP
    Pump Flow 100L/min
    Pump Lifts 22M
    Power Supply 3-phase 4-wire AC 208V/60Hz, 220V/60Hz, 240V/60Hz, 380V/50Hz, 400V/50Hz, 415V/50Hz, 480V/60Hz (Optional)
    Control Voltage 1-phase AC 220V (L+N)
    Total Power 3.7kW
    Wires Specifications 4x2.5mm2
    Certification CE
    Dimension L*W*H=1250*630*1240mm
    Net Weight / Gross Weight 155kg / 195kg

    Shipping Way of ATO Water Chiller

    Just confirm us the shipping way by email when place your order.

    1. Ship by Air: The compressed refrigerant inside the chiller is a dangerous item with the possibility of explosion, so it needs to release the compressed refrigerant before transportation. (It means that water chiller without refrigerant when choosing this shiping way. After the machine arrives at your destination, you need to add refrigerant by local professionals, the process is as simple as adding refrigerant for ordinary air conditioners.) Delivery time is about 15-30 days.

    2. Ship by Sea: The transportation time is longer (about 40-55 days), and there is no need to add refrigerant after the equipment arrives at the destination.


    1. The "cooling capacity" is tested based on: Inlet and outlet water temperature of freezing is 12℃/7℃, and the inlet and outlet water temperature of cooling is 30℃/35℃.

    2. Working temperature range: Chilled water temperature range is 5℃-35℃, inlet and outlet water temperature difference is 3℃-8℃, condensation temperature not higher than 35℃.

    3. Conversion of units: 1 ton cooling capacity=3024kcal/hr, 1kcal/hr=3.969BTU/hr, 1HP=0.735kW=2580kcal/hr

    Water Chiller Structure Diagram

    water chiller structure diagram

    Compressor High pressure gauge Condenser Dry filter
    Expansion valve Water supply Evaporator Low pressure gauge
    Water tank Drain Refrigerated water Pump

    Tips: Wide application of industrial water chiller

    1. Water chiller used in the cooling of plastic processing mechanical molding mold which can greatly improve the surface finish of plastic products, reduce the surface striation and internal stress of plastic products, and make the products not shrink or deform. It is convenient for demoulding of plastic products and accelerating the finalization of products, thus greatly improving the production efficiency of plastic molding machine.

    2. Water chiller is applied to the lubrication of the spindle of CNC machine tools, coordinate boring machines, grinding machines, machining centers, modular machine tools and all kinds of industrial precision machine tools and the cooling of the transmission medium of the hydraulic system, which can accurately control the oil temperature, effectively reduce the thermal deformation of the machine tools and improve the machining accuracy.

    Existing reviews of 4 HP 3.5 Ton Air Cooled Industrial Water Chiller
    I am interested in purchasing a water chiller with the following specs
    I am interested in purchasing a water chiller with the following specs:
    Cooling capacity: 3.5 tons
    Control temperature: 22℃
    Flow rate: 15L/min
    Our process metals are stainless steel and copper so the chiller needs to be able to tolerate that voltage 1 or 3 phase, 110 VAC to 480 VAC.
    From: seth | Date: 13/06/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    "For this, our process metals are stainless steel and copper so the chiller needs to be able to tolerate that", do you mean that there are both stainless steel and copper in the water pipes of the system? Because the water pipe contains copper, it may rust after later use.
    The waterway material of our chiller is usually engineering plastics, PVC, silica gel, stainless steel. There is no copper, so please confirm whether your water pipes contain copper?
    Also, can you accept the three-phase 380V, 50Hz voltage for the chiller?
    Worth the money
    This water chiller is well built. It adopts high quality compressors and pumps to ensure safe and quiet running. I hope this product will last a long time.
    From: Drew | Date: 25/04/2022
    Was this review helpful? Yes No (0/0)
    Easy to install
    Installing the water chiller is very straightforward and only took me about 30 minutes. Noise-wise this chiller is really good. Once it's in my under-aquarium cabinet with the door closed, I can barely hear it.
    From: Farrah | Date: 25/03/2022
    Was this review helpful? Yes No (0/0)
    The temperature of an industrial water chiller
    What is the maximum ambient temperature this industrial water chiller can operate at? Optimum temp?
    From: Curt | Date: 05/08/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    No more than 40 degrees.
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