BLACK+DECKER 12,000 BTU Window AC Review: BWAC12WTB, CEER 10.9
A 12,000 BTU window air conditioner with a 10.9 CEER, digital controls, a full-function remote, three cooling and fan speeds, sleep and energy saver modes and 5 years of compressor parts coverage.
By Daniel Brooks
Updated October 15, 2026
The BLACK+DECKER 12,000 BTU Window AC is a large-room window unit aimed at master bedrooms, living rooms and small apartments. Sold as model BWAC12WTB, it pairs a 10.9 CEER with electronic controls, a digital display and a full-function remote. Among conventional window air conditioners at 12,000 BTU, it is a mid-priced option with a 4.0 out of 5 average across more than 80 ratings on its listing.
BLACK+DECKER adds three cooling and fan speeds, an auto thermostat, sleep mode, an energy saver feature, a timer and clock, and easy-to-adjust accordion side panels.
Our Verdict
The BWAC12WTB is a sensible pick when you need to cool a large bedroom or living area on a standard outlet and want a well-known brand with a solid warranty. The controls are easy to use, the CEER is reasonable, and 5 years of compressor parts coverage is a real plus.
The trade-offs are noise and size. The listing gives 59 dB, which is on the loud side, and at 63.7 pounds and 21.5 inches deep it is a big unit to install. The listing also gives two different room sizes. Size it for about 450 to 550 square feet and it will do the job well.
BLACK+DECKER 12,000 BTU Window Air Conditioner
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | BLACK+DECKER |
| Model | BWAC12WTB |
| Type | Window air conditioner |
| Cooling Capacity | 12,000 BTU |
| Room Size | Up to 550 sq ft (features) / 450 sq ft (specs) |
| CEER | 10.9 |
| Noise Level | 59 dB |
| Power | 115 volts, 980 watts |
| Annual Energy Use | 820.57 kWh per year |
| Speeds | 3 cooling and fan speeds |
| Window Fit | 26″ to 36″ wide, 16″ minimum height |
| Dimensions | 21.5″D x 19.76″W x 15.16″H |
| Weight | 63.7 pounds |
| Refrigerant | R-32 |
| Warranty | 1 year parts and labor, 5 years compressor parts |
Cooling Capacity and Room Size
BLACK+DECKER rates the BWAC12WTB at 12,000 BTU. The feature list says it cools spaces up to 550 square feet, while the specifications list 450 square feet. Both fit the ENERGY STAR guide, which places 12,000 BTU at 450 to 550 square feet.
ENERGY STAR publishes this general guide for sizing a room air conditioner by floor area:
| Room Size (sq ft) | Cooling Capacity (BTU/hr) |
|---|---|
| 100 to 150 | 5,000 |
| 150 to 250 | 6,000 |
| 250 to 300 | 7,000 |
| 300 to 350 | 8,000 |
| 350 to 400 | 9,000 |
| 400 to 450 | 10,000 |
| 450 to 550 | 12,000 |
| 550 to 700 | 14,000 |
| 700 to 1,000 | 18,000 |
Adjust for your room: reduce capacity by 10 percent for a heavily shaded room, increase it by 10 percent for a very sunny room, add 600 BTU for each regular occupant beyond two, and add 4,000 BTU if the unit cools a kitchen. Source: ENERGY STAR.
A master bedroom, living room, large home office or small apartment is the right fit. If the room is very sunny or near the top of that range, expect the unit to run for long stretches on hot afternoons.
The listing marks the unit as having an inverter in one field, but none of the features or descriptions mention inverter technology. We treat it as a standard compressor that cycles on and off.
Installation and Fit
Mounting hardware and an installation kit are included. The unit fits windows from 26 to 36 inches wide and as low as 16 inches high, and the side accordion panels are easy to adjust.
This is a large, heavy unit. It measures 19.76 inches wide, 15.16 inches tall and 21.5 inches deep, and weighs 63.7 pounds. Plan on two people for installation, and consider a support bracket under the unit. Tilt it slightly toward the outside so condensation drains outdoors.
The unit runs on a standard 115 volt outlet and draws 980 watts. A circuit without other heavy loads helps avoid tripped breakers.
Noise, Energy Use and Efficiency
The listing gives a noise level of 59 dB. That is louder than many 12,000 BTU units and may bother light sleepers in a bedroom. Sleep mode and the lowest fan speed help at night. In a living room, the noise is less of a concern.
BLACK+DECKER lists a CEER of 10.9 and annual energy use of 820.57 kWh per year. The listing notes it is higher efficiency but not ENERGY STAR certified. The energy saver feature, sleep mode and timer all help reduce energy use.
Controls and Features
Electronic controls with a digital display are easy to read and use, and the full-function remote handles every setting from across the room. Three cooling and fan speeds and an auto thermostat let the unit adapt to changing conditions.
Sleep mode adjusts operation for quieter nights, the energy saver feature cycles the fan with the compressor, and the timer and clock let you schedule the unit around your day. The listing also notes dehumidifying, which helps on humid days. There is no Wi-Fi or app control.
Maintenance and Care
The listing describes a HEPA-type filter. Check it every couple of weeks during the cooling season and clean or replace it according to the manual. A clean filter keeps airflow strong in a large room.
Given the weight, many owners leave the unit installed for the season and cover the exterior over winter. Check the accordion panels and seals each spring.
Warranty
BLACK+DECKER covers labor and parts for 1 year against manufacturing defects, plus a total of 5 years on compressor parts only. For a large unit where the compressor is the most expensive part, that extra coverage is worth having.
Everyday Use
In a living room, the BWAC12WTB works well on the auto thermostat with the energy saver feature on, so the fan does not run constantly. In a bedroom, cool the room on a higher speed before bed, then switch to sleep mode to reduce noise overnight. Use the timer so the unit starts before you get home on hot days.
Pros and Cons
| Pros | Cons |
|---|---|
| Cools large rooms on a 115 volt outlet | 59 dB is on the loud side |
| CEER of 10.9 | Heavy at 63.7 pounds |
| Digital display and full-function remote | Listing gives two room sizes |
| Sleep, energy saver and timer | No Wi-Fi or app control |
| 5 years of compressor parts coverage | Not ENERGY STAR certified |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Living rooms and master bedrooms | Light sleepers who need a quiet unit |
| Small apartments on a standard outlet | Small rooms under about 450 sq ft |
| Buyers who value compressor warranty | Smart home users who want app control |
| Buyers who want simple controls | Anyone installing alone |
Final Verdict
The BLACK+DECKER 12,000 BTU Window AC is a capable large-room unit with a 10.9 CEER, digital controls, a full-function remote and 5 years of compressor parts coverage. It suits living rooms, master bedrooms and small apartments. Expect a heavy body and above-average noise. You can check the current price and details for the BLACK+DECKER 12,000 BTU Window Air Conditioner.
Frequently Asked Questions
What size room does the BLACK+DECKER 12,000 BTU cool?
The listing gives 550 square feet in the features and 450 in the specs. A room of about 450 to 550 square feet is a good fit.
Is it an inverter unit?
One listing field says it has an inverter, but no features mention inverter technology. We treat it as a standard compressor.
What windows does it fit?
It fits windows from 26 to 36 inches wide and as low as 16 inches high.
Does it have Wi-Fi?
No. It uses the digital controls on the unit and the full-function remote.
What warranty does it have?
It has 1 year of labor and parts coverage, plus 5 years on compressor parts only.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.