3 Ton Air-cooled Portable Air Conditioners


1st Cooling sells 3-1/2 Ton (42,000BTU/hr) spot coolers and portable air conditioners. For a description of BTUs and how cooling works, click Portable Air Conditioner Basics.

Most customers use portable air conditioners whenever they have an old air conditioner that is not working up to capacity. That’s where 1st Cooling comes in! 1st Cooling provides effective climate control all over the US through our locations and network of companies.

Cool a kitchen in your restaurant or banquet hall.

Rent a Portable air conditioner to provide emergency cooling, spot cooling, or supplemental cooling where and when you need it.

1SKK-4221


The Model 1SKK-4221 air-cooled portable air conditioner is a ‘true’ air conditioner just like our 1SKK3021 model and operates on 220 Vac power. This is accomplished by one flex duct bringing in outside air to cool the condenser coil and the other duct blows out hot air from the condenser coil to the ceiling plenum via the ceiling tiles. This portable air conditioner is perfect for cooling spaces from 1,400 – 1,600 square feet. This portable air conditioner operates on a 40 Amp receptacle. The 3-1/2 Ton spot cooler can also be used in these environments:
* Cooling elevator motors
* Dehumidifying legal documents stored in a warehouse
* Keeping customers cool in restaurants
* Cooling server rooms in co-located spaces
Portable air conditioners dehumidify the air by removing moisture from the space. Buy a portable air conditioner as a back-up cooling system in case your ac system goes down or if you have hot spaces in your building.
Call 1st Cooling at 972-447-0555 for a quote to buy a portable air conditioner or spot cooler.
Cooling Capacity (BTU): 42,000
Dimensions (in. W x D x H): 22.325x44x49
Weight (lbs): 426
Power Supply (Phase/Volts/Hz): 1 / 220 / 60
Power Consumption (Amps): 31.9
Circuit Breaker Needed (Amps): 40
Plug Type: hardwired
Power Cord Gauge/Length ft.: 8 / 10
Refrigerant Type: 407C
Operating Temperature (ºF – RH): 70 – 100 / 50%
Cold Air Flow (CFM) Evaporator: 1,400
Cold Air Supply Nozzles (Y/N – Qty – Dims): N
Hot Air Flow (CFM) Condenser: 2,100
Condenser Exhaust Duct Diameter / Max Length: 16″ / 25′
Air Filter Material: paper
Condensate Tank (Y/N / Internal/External / Gallons): N
Condensate Pump (Y/N): Y
Dual duct kit

1SKK-3021A


The Model 1SKK-3021 air-cooled portable air conditioner is a ‘true’ air conditioner just like our 1SKK2421 model. This portable air conditioner is perfect for cooling spaces from 1,000-1,200 square feet. This portable air conditioner operates on a 20 Amp receptacle. This portable ac unit pulls close to Amps of power. The 2.5 Ton spot cooler can also be used in these environments:
* Cooling indoor telephone stores
* Cooling employees in office spaces
* Keeping products cool and dehumidified in warehouses
* Cooling servers in data centers
Portable air conditioners dehumidify the air by removing moisture from the space.
Buy a portable air conditioner as a back-up cooling system in case your ac system goes down or if you have hot spaces in your building.
Call 1st Cooling at 972-447-0555 for a quote to buy a portable air conditioner or spot cooler.
Cooling Capacity (BTU): 23,500
Dimensions (in. W x D x H): 20.325x41x43.125
Weight (lbs): 278
Power Supply (Phase/Volts/Hz): 1 / 220 / 60
Power Consumption (Amps): 11.5
Circuit Breaker Needed (Amps): 20
Plug Type: NEMA 6-20
Power Cord Gauge/Length ft.: 12 / 6
Refrigerant Type: 407C
Operating Temperature (ºF – RH): 60 – 110 / 50%
Cold Air Flow (CFM) Evaporator: 750 (3-speed)
Cold Air Supply Nozzles (Y/N – Qty – Dims): N / Adjustable vent
Cold Air Discharge Max Length ft.: NA
Hot Air Flow (CFM) Condenser: 1,100
Condenser Exhaust Duct Max Length (Diameter / Feet): 14″ / 25
Air Filter Material: paper
Condensate Tank (Y/N / Internal/External / Gallons): N
Condensate Pump (Y/N): Y
Dual duct ceiling kit