Whirlpool WHAT122-2BW Review: 12,000 BTU 230V Wall AC
A 230V cooling-only wall unit rated 12,000 BTU for spaces up to 550 sq ft, with 8-way louvers, a quick-access filter, a trim kit and rear grille, and a 5 year limited warranty.
By Daniel Brooks
Updated October 22, 2026
The Whirlpool WHAT122-2BW is a 12,000 BTU cooling-only wall unit built for sleeves that already have a 230 volt receptacle. Whirlpool rates it for spaces up to 550 square feet, includes a trim kit and rear grille, and backs it with a 5 year limited warranty, the longest we have seen on a wall unit in our cooling-only through-the-wall air conditioners category. It has 7 ratings on Amazon so far.
Our Verdict
The WHAT122-2BW is a strong choice for a medium living room or large bedroom in a building wired for 230 volt wall units. Whirlpool lists 56 dB, reasonable for 12,000 BTU, and the 8-way directional louvers give finer airflow control than most rivals. Eco and Sleep functions, a programmable 24 hour timer, a quick-access filter and up to 1.6 pints per hour of dehumidification round it out.
The limits are the outlet and the feature set. It needs a 230V/15A receptacle, so it will not work in a home with only standard outlets, and there is no Wi-Fi or heat. With only a handful of ratings, its track record is still building, though the long warranty offsets some of that risk.
Whirlpool 12,000 BTU 230V Wall Air Conditioner
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | Whirlpool |
| Model | WHAT122-2BW |
| Type | Cooling-only through-the-wall air conditioner |
| Cooling Capacity | 12,000 BTU |
| Room Size | Up to 550 sq ft |
| Power | 230 volts, 1160 watts, 4.8-ft plug for 230V/15A outlet |
| Efficiency | 10 (listed) |
| Refrigerant | R-32 |
| Noise Level | 56 dB (listed) |
| Temperature Range | 62 to 86 degrees |
| Dehumidifying | Up to 1.6 pints per hour |
| Dimensions | 24.2 x 14.5 x 20.3 inches (W x H x D) |
| Sleeve Fit | 24.5 to 27 inches wide |
| Weight | 72.1 pounds |
| Warranty | 5 year limited |
Cooling Capacity and Room Size
Whirlpool rates the WHAT122-2BW for spaces up to 550 sq. ft., the top of the 12,000 BTU band in the ENERGY STAR chart below. It suits a medium living room, a large primary bedroom with a sitting area, a studio or a home office. Four operation modes and three fan speeds let you balance cooling and noise, and the temperature range runs from 62 to 86 degrees.
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.
Power Requirements
The unit has an attached 4.8 foot plug that Whirlpool says fits any 230V/15A electrical outlet, and it draws 1160 watts. Look at the receptacle beside your sleeve before ordering. If it is a standard household outlet, this is the wrong model, and Whirlpool’s 115 volt wall units are the better fit. If it is a 230 volt receptacle of a different type, an electrician can confirm whether it matches.
On a 230 volt circuit, a 1160 watt load is light, so you are unlikely to trip a breaker.
Installation and Sleeve Fit
The chassis measures 24.2 inches wide, 14.5 inches tall and 20.3 inches deep, and Whirlpool says it fits sleeves from 24.5 to 27 inches wide. That range covers many universal sleeves already in apartments and condos. The box includes a trim kit for the indoor side and a rear grille for the outdoor side, which saves buying them separately. The sleeve itself is not included. At 72.1 pounds, two people should lift it in.
Airflow and Controls
The 8-way directional louvers are a real advantage in a larger room. You can aim air diagonally toward a sofa or desk that is not straight in front of the unit, which a fixed wall unit otherwise struggles to reach. The on-board controls are backed by a remote.
The quick-access filter slides out when you pull the front handle, so cleaning it takes seconds and does not require removing the front panel. A filter light reminds you when it is due.
Energy Use and Noise
Whirlpool lists an efficiency figure of 10, typical for a conventional 12,000 BTU wall unit. The Eco function turns off the compressor once the room reaches your set temperature, and Sleep adjusts operation overnight. The programmable 24 hour timer lets you cool the room only when needed.
At 56 dB listed, it is comfortable for living spaces and workable in a bedroom with Sleep on and a low fan speed.
Dehumidifying
The unit removes up to 1.6 pints of moisture per hour as it cools. That is a moderate figure, helpful on humid days but not a substitute for a dedicated dehumidifier in a damp basement.
The 5 Year Warranty
Most wall units carry a 1 or 2 year warranty. A 5 year limited warranty is unusually long and makes the WHAT122-2BW appealing for owners who plan to leave a unit in the wall for many seasons. Keep the receipt and register the unit, and check the warranty terms for what is covered in later years.
Whirlpool’s Two 230V Wall Units
Whirlpool sells this 12,000 BTU model alongside a 10,000 BTU 230 volt version with the same chassis, louvers, filter and controls. The 10,000 BTU unit is the better fit for a bedroom or office of about 450 square feet, while the WHAT122-2BW suits living rooms and larger bedrooms. Because they share a sleeve size, you can upgrade from one to the other later without changing the opening.
If you are replacing an older wall unit, check its label for voltage and capacity. Matching the old unit’s voltage avoids electrical work, and moving up one capacity step is usually safe if the room ran warm on hot afternoons.
Who It Suits Best
The WHAT122-2BW suits medium living rooms, large bedrooms and studios up to 550 square feet with a 230 volt sleeve outlet, and owners who value a long warranty. It is less suited to homes with only standard outlets, smart home users, or rooms that need heat.
Pros and Cons
| Pros | Cons |
|---|---|
| 5 year limited warranty | Needs a 230V/15A outlet |
| 8-way directional louvers | No Wi-Fi or app |
| Trim kit and rear grille included | Only a handful of ratings |
| Quick-access filter | Moderate dehumidifying |
| Fits 24.5 to 27 inch sleeves | No heat mode |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Apartments with a 230V sleeve outlet | Homes with only standard outlets |
| Living rooms up to 550 sq ft | Smart home users |
| Owners who want a long warranty | Rooms that need heat |
| Rooms with off-center seating | Damp basements |
For more options, see our picks for the best 12,000 BTU through-the-wall air conditioners and the best 230V through-the-wall air conditioners.
Final Verdict
The Whirlpool WHAT122-2BW is a well-equipped 230 volt wall unit for rooms up to 550 square feet, and its 5 year limited warranty is a standout. If your sleeve has the right outlet, it is an easy, long-term choice. You can check the current price and details for the Whirlpool 12,000 BTU 230V Wall Air Conditioner.
Frequently Asked Questions
What outlet does the Whirlpool WHAT122-2BW need?
It has a 4.8 foot plug for a 230V/15A electrical outlet.
What size room does it cool?
Whirlpool rates it for spaces up to 550 square feet.
What warranty does it have?
The listing gives a 5 year limited warranty.
What sleeve size does it fit?
Whirlpool says it fits sleeves from 24.5 to 27 inches wide.
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.