
Cool Boss CB-26SL 50 Gallon Portable Air Cooler
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The Cool Boss CB-26SL is a versatile and powerful portable evaporative air cooler built to handle intense heat in large indoor or outdoor spaces. With its robust 26” Blue Flex™ axial fan and an impressive 7,540 CFM airflow, this unit efficiently cools up to 4,150 sq. ft., making it perfect for residential backyards, patios, commercial garages, or job sites. Available in both 110V and 208–230V models, the CB-26SL brings you maximum flexibility and energy efficiency wherever you need it.
At the heart of the CB-26SL is Cool Boss's signature Honeycool™ evaporative media, which uses the natural process of water evaporation to lower ambient air temperatures without the high cost of traditional AC systems. The ABS plastic shell is lightweight yet durable, housing a large 50-gallon water tank to support extended use without frequent refilling. Automatic water shutoff, swing louvers, and a 10-speed fan control ensure precise, customized cooling with minimal effort.
Moving the CB-26SL around is a breeze thanks to its locking swivel casters and compact frame. The built-in 15-foot power cord, user-friendly controls, and antibacterial housing make it as convenient as it is effective. Whether you’re looking for a cooler work environment or simply want to beat the heat in your outdoor space, the CB-26SL is the ultimate solution in portable, eco-conscious cooling.
Model: CB-26SL
Fan Diameter: 26" (660 mm)
Fan Speed: 10-Speed
Fan RPM: 1,620
Fan Type: Axial
Max. Airflow: 7,540 CFM
Coverage Area: 4,150 sq. ft. (386 sq. m.)
Water Capacity: 50 gal. (185 liters)
Media Dimensions (each): 39" (H) x 14" (W) x 6" (D) | 99 cm x 35 cm x 15 cm
Housing Material: ABS plastic, Antibacterial
Sound Level: 73 – 97 dB
Operating Temperature (Water Inlet): Up to 113°F (45°C)
Dimensions (L x W x H): 43" x 27" x 66" | 1,102.3 mm x 681 mm x 1,666 mm
Weight (Empty): 209 lbs. (94.8 kg)
Weight (Full): 609 lbs. (276 kg)
Cord Length: 15 ft (4.5 m)
UL® Certified: Yes
Power Options
CB-26SL 110V
CB-26SL 220V
Available in 110V and 208–230V models
26” Blue Flex™ axial-flow fan
10-speed variable fan control
Oscillating auto-swing louvers
Honeycool™ evaporative media
Automatic water source shutoff
Durable ABS plastic shell construction
Antibacterial housing
Space-saving, compact design
Extra-long 15-ft power cord
User-friendly control panel
Locking swivel casters for portability
UL® Certified
Energy-efficient operation ideal for dry climates
Free shipping to the 48 contiguous U.S. states
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Forklifts and Lift Gates
All of our Single Post, 2 Post, and 4 Post Lifts* require a forklift (or similar) to unload. Tire Changers and Balancers and other small items allow for a lift gate service (At no additional charge) Lift gate service will lower your order to street level. How do I know if a forklift is required? See the drop down options that show when you're attempting to place an order.
What if I don't have a forklift at my location and my order requires it?
This is a common question and here's some alternatives:
Can I hand unload my order if I don't have a forklift?
No, sorry, the truck drivers don't allow for this. 2 things: Liabilities and the time it takes to unload - truck drivers can't wait, even if you have an army of help.
How do I know if my order requires a forklift or if a lift gate service is available?
See the drop down options that show when you're attempting to place an order.
Residential Deliveries
Yes, we deliver to residential addresses!
Will the freight company contact me to schedule the delivery?
Yes, the freight company will call you ahead of time to schedule the delivery to ensure you are available to receive/unload your order.
Warehouse Pickup (No Freight Charge)
Warehouse pickup is available for almost all of our brands. Warehouse locations are listed on each product page. At checkout, select "Pickup" and choose the warehouse you'd like to pickup from. Upon ordering, we will send an email with the pickup form/number.
Freight Terminals
If you don't have a forklift at your location, we can find you a freight terminal in your area and they will load your trailer onsite. (Typically 30-60 minute drive away, depending on location) Special note: Some orders are so large they ship on a flatbed by themselves, in these cases a freight terminal delivery is not an option. The product page will state whether this is the case.
Flat Rate Shipping and Freight Quotes
Most of our products have a flat rate shipping fee. However, if you see a note that says "Contact us to see if we can ship for less" then this means we're able to quote for a better price. Contact Us now!
*The X1 Triumph 4 post can deliver with lift gate