Coolblus 8,500 BTU Portable AC and Bigger Models, Compared

BTU (British thermal unit) measures how much heat an air conditioner can remove from a room each hour. More BTU means more cooling power. Coolblus lists two numbers for most models. ASHRAE is an older test method that gives a bigger figure. DOE (the U.S. Department of Energy’s newer standard, sometimes called SACC) tests the unit in more realistic conditions, so its number is lower. When comparing portable ACs, the DOE figure gives a truer picture of what you will feel.

That matters for the 8,500 BTU model: by the DOE method it delivers 5,100 BTU. It can still keep a bedroom comfortable, but a sunny room, a top-floor apartment or a kitchen adds heat, and you may want more capacity than the rated square footage suggests.

The Coolblus Portable Air Conditioners 8500 BTU model is rated to cool rooms up to 360 square feet. It combines cooling, dehumidifying and fan modes, with adjustable fan speed and auto air swing that moves the airflow around the room. The specs mention 4-way swing. It has an LED control panel and a remote.

Coolblus lists a CEER of 6.5; CEER is an efficiency score, and a higher number means more cooling per unit of electricity. Sleep mode, turned on by pressing two buttons together, drops noise to 52 dB, roughly the level of a quiet conversation. An auto-evaporative system reduces the water you need to empty, and you can attach a drain pipe for continuous draining. A washable mesh filter, 360-degree casters, a window slide bar and a 1.5 meter exhaust hose are included. It uses R-32 refrigerant and runs on standard 115V power.

A few listing details look wrong: the temperature setting is described as 62 to 104°F, and the installation type says “split system”, which does not fit a portable unit. This model suits a bedroom, dorm or home office. For a living room, step up to the 12,000 BTU.

The Coolblus Portable Air Conditioners 8400 BTU model is rated for rooms up to 350 square feet. There is a clear conflict here: the title and spec sheet say 8,400 BTU, while the features describe 8,500 BTU ASHRAE and 5,100 BTU DOE, the same figures as the 8,500 model. In practice, treat the two as very similar in cooling power.

It offers cooling, fan and drying modes, with a cooling range of 61 to 88°F. Sleep mode runs at 52 dB, the 24-hour timer lets you schedule cooling, and auto restart turns the unit back on after a power cut. You get both an LED display and a remote that works up to 25 feet away. A 1.5 meter exhaust hose, automatic evaporation, a drain option and a filter brush for cleaning are included. The spec field saying it “requires new outdoor unit” is almost certainly an error for a portable AC.

Choose this model for a small bedroom or office if you like the included filter brush and auto restart. Otherwise, it is close enough to the 8,500 BTU model that either will do. You can also compare it with other 8,000 BTU portable air conditioners we have covered.

Coolblus

Coolblus 12000 BTU Portable Air Conditioners, 3-in-1 AC Unit Cools Up to 550 Sq.Ft. with Remote Control/Smart Sleep Mode/24Hrs Timer/Window Installation Kit & Filter Cleaning Brush, White-12000BTU

8.0/10Our score, based on listed specifications and buyer feedback

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Coolblus 12000 BTU Portable Air Conditioners

Best for: Living rooms and larger bedrooms

Pros

• 7,100 BTU DOE rating
• Cools up to 550 sq ft
• Quiet 52 dB sleep mode

Cons

• 2300W listed draw
• Install type spec conflicts

The Coolblus 12000 BTU Portable Air Conditioners model steps up to 12,000 BTU ASHRAE or 7,100 BTU DOE, rated for rooms up to 550 square feet. Coolblus says it can provide targeted cooling in about 15 minutes, with a temperature range of 61 to 88°F.

It shares the same 3-in-1 functions, 52 dB sleep mode, 24-hour timer, LED display and 25 foot remote. A 1.5 meter exhaust hose, window slider bar, green cleaning brush, automatic evaporation and a mesh filter are included. The listing gives a wattage of 2300 watts, higher than the 14,000 BTU model’s listed figure, so that number may be a peak or an error. The installation type field says “through the wall”, although the title mentions a window installation kit.

This is the sweet spot for a living room, a bigger master bedroom or a small apartment. If you want phone control or need to cover an even larger space, the 14,000 BTU is next.

The Coolblus Portable Air Conditioners 14000 BTU model is the biggest in the lineup, rated for rooms up to 650 square feet. It is the only one with Wi-Fi, so you can adjust temperature, fan speed, mode, auto swing and the 24-hour timer from the Smart Life app, the touch panel or the remote. The listing does not give a DOE rating.

It has cooling, fan and dehumidifier modes. The title says 4-in-1, but the features describe three modes, so expect three. Auto evaporation reduces manual draining and the filter is removable and washable. Side handles and 360 degree casters help you move it, which is useful because it weighs 62 pounds. A window installation kit makes it rental friendly. The listed noise level is 65 dB, noticeably louder than the smaller units’ sleep mode figure. The annual energy use of 23,000 kWh is clearly a listing error.

Pick this model for a large open-plan room or if you want to cool the space before you get home. For a bedroom, the smaller models are quieter. For more big-room options, see our guide to 14,000 BTU portable air conditioners.