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Used Spot Coolers & HVAC for Sale


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About Used Spot Coolers & HVAC

A portable cabinet aimed at one person, one barrel or one hot press is a local air conditioner, not a building system and not a mold-water chiller. A spot cooler blows cold air through a nozzle or a short duct. It does not circulate water through a mold. Koolbase is the name that repeats among these cabinets. Cold air leaves the evaporator. Warm air leaves the condenser, and condensate has to go somewhere. If the warm side dumps back into the same room, you have only moved the heat a few feet. Wheels are the point. The value is rolling the cabinet to the next hot spot between two presses.

Cooling capacity is on the nameplate in Btu per hour, not in the height of the cabinet. A documented mid-size portable, MovinCool's Climate Pro K24, is rated at 24,000 Btu/h at 95°F and 60 percent relative humidity, on 208/230 volts, single phase. A unit in that class comforts an operator or a small cell. It will not hold a large press bay. Smaller cabinets often plug into 115 volts. Larger ones step up in voltage and in Btu. Operating range on that K24 is about 65 to 95°F. A room unit that quits when the shop climbs past its ambient limit will fail on the day you need it.

Condensate is the water the coil pulls out of the air. The K24 carries a tank of about 5 gallons that someone has to empty. A condensate pump is an accessory, with about 17 feet of lift on the kit sold for that model. A missing tank is a puddle on the floor. Warm exhaust can be ducted. On the K24 the hot duct is limited to about 45 feet and the cold duct to about 50 feet. Other models allow a different length, so read the plate rather than assuming those K24 numbers. Filters clog fast around a molding floor, and a packed filter looks like a dead compressor. Air from the nozzle should get cold. Fan-only airflow is not cooling.

Buying a used spot cooler means matching capacity, voltage and a place for the warm air. A cabinet from a closure was usually parked at one cell, which tells you the scale. Meadoworks offers these cabinets from plant closures, consignments and auctions. Buyers can run the fan and the compressor, read the plate, and look for the tank or the pump. This will not hold a mold circuit. It will take the edge off a person standing next to a hot barrel.

How to Choose Used Spot Coolers & HVAC

How to Size a Spot Cooler

Start from the heat you are fighting, not from the cabinet height. Cooling capacity in Btu per hour has to match the cell, a single operator, or a larger press bay. A number that looks large on a small room may be ordinary in a molding plant. Voltage has to match the wall, 115 volts on many small units and 208 or 230 volts on larger ones. Then decide where the warm air goes. If it dumps back into the same room, you are stirring heat. A short duct to the outside or into a return is part of the size, not an afterthought. Condensate has to go into a tank you will empty or a drain you can reach.

Cell Cooling, Not a Building Chiller

A portable spot cooler aims a nozzle at a person, a barrel or a hot press. It is not a process chiller and it does not circulate mold water. It is also not the air handler for the building. The useful questions are capacity, voltage, how condensate leaves, and where the warm exhaust goes. Filters clog fast around a molding floor, so a clean filter is part of inspection, not a bonus. A unit that blows air and does not cool has a refrigerant problem, not a fan problem. Wheels matter because the value is moving it to the next hot spot. Koolbase is the name that repeats on these portable cabinets.

Spot Coolers & HVAC Specs to Compare

Cooling capacity

Typical range: About 24,000 Btu/h

Cabinet size does not tell you whether the unit can hold a cell or only one person.

Voltage

Typical range: 208/230 volts, single phase

A mid-size cabinet needs that circuit. A smaller one may be a different plug.

Condensate

Typical range: About a 5 gal tank

A tank fills. A pump can lift water about 17 ft. Either way the water has to leave.

Warm exhaust

Typical range: Hot duct about 45 ft

Heat that stays in the room undoes the cooling. A duct path is part of the install.

Airflow and nozzle

The cold air has to reach the person or the machine, not the ceiling.

Filters

A loaded filter in a dusty plant looks like a failed compressor.

What to Inspect on Used Spot Coolers & HVAC

  • Read capacity and voltage

    Write Btu per hour and volts. Confirm the circuit exists where the unit will sit.

  • Run fan and compressor

    Air from the nozzle should get cold. A fan-only unit is not cooling.

  • Check the condensate path

    See whether it is a tank you empty or a hose, and whether the tank is still there.

  • Find the warm exhaust

    Confirm you can duct it out of the cell. Heat dumped beside the nozzle does not help.

  • Inspect filters

    A packed filter restricts the coil. Plan to clean or replace it before the first shift.

  • Look at wheels and the nozzle

    Casters should roll. The nozzle should aim and stay aimed.

  • Note the ambient limit

    A unit that quits when the plant is hottest will fail on the day you need it.

Related Equipment

Common Applications

Cooling an operator at a hot press
Holding a work cell during a heat spike
Temporary cooling while a rooftop unit is down
Maintenance spots away from building air
Electrical cabinets that run hot
Pack-out stations in a warm bay
Short-term cooling for a startup cell
Directional cooling through a nozzle

Frequently Asked Questions

Is a spot cooler the same thing as a process chiller?

No. A spot cooler blows cold air at a person, a press or a work cell. It is a portable air conditioner with a nozzle, a condensate path and a warm-air exhaust. A process chiller circulates water through a mold and is a different machine. Koolbase units are the portable air type. Do not buy one to hold mold temperature. Do not buy a chiller when the complaint is that the operator is standing in a hot bay.

How do I size cooling capacity for one cell?

Use Btu per hour from the nameplate, not the height of the cabinet. A unit that comforts one person will not hold a large press bay, and a large unit on a 115 volt plug may not exist. Match voltage at the same time. Then plan the warm exhaust. Capacity that looks right on paper fails if the heat dumps back into the same room. Condensate capacity matters on a long shift if you are using a tank instead of a drain.

What do I do with condensate and warm exhaust?

Condensate is the water the coil pulls out of the air. A condensate tank has to be emptied, and a missing tank is a leak on the floor. A drain hose needs a floor drain nearby. Warm exhaust is the heat the unit removed, and it has to leave the room or you only moved the heat a few feet. A short duct is the usual answer. Neither path is optional if you want the cell to stay cooler than the aisle.

What should I inspect on a portable spot cooler?

Run it. The fan should move air and the nozzle should get cold. A unit that only blows room air has a refrigerant or compressor problem. Read volts and capacity. Check the filter, the wheels, the nozzle and whether the tank or drain is present. Look for a way to duct the warm side. Filters from a molding plant are often packed, and that alone can make a healthy unit look weak. Photograph the nameplate.

Will a spot cooler cool a whole plant?

No. It is a local machine. Point it at the hot job and give the warm air somewhere to go. Cooling the building is an air handler or a central system, not a cabinet on casters. Several units can cover several cells, and each one still needs power and a condensate plan. If the real problem is mold water, you want a process chiller. If the real problem is a person standing next to a hot barrel, a nozzle cabinet is the right machine.

Why does voltage change between spot cooler listings?

A smaller unit often runs on 115 volts and an ordinary plug. Larger cooling capacities step up to 208 or 230 volts and a different receptacle. Buying the capacity you need on the wrong voltage means an electrician before the nozzle ever points at the press. Read the plate and look at the plug. A unit that ran in one plant will not invent a circuit in the next one. Filters and condensate are the next checks after volts.