#1 Home Improvement Retailer

12,000 BTU 115V Through-The-Wall AC Remote Dehumidifier Sleep Mode 24H Timer for Rooms up to 550 Sq. Ft.

Apply Now
Pay $509.99 after $50 OFF your total qualifying purchase upon opening a new card. info
Apply for a Home Depot Consumer Card
  • LCD remote enables temperature control from across the room
  • Auto-restart revives the previous settings once power restores
  • Includes a variety of comfortable cooling options
  • View More Details
Free & Easy Returns In Store or Online
Return this item within 90 days of purchase. Read Return Policy

Product Details

The Keystone 12,000 BTU 115-Volt through-the-wall air conditioner with "Follow Me" remote control is perfect for cooling a room up to 550 sq. ft. It has electronic controls with LED display and a temperature sensing LCD remote control allowing you to conveniently see, set and maintain the room temperature from across the room. Money saving features includes energy saver mode, sleep mode and a programmable 24-hour timer. Plus quiet operation (56.5 dB on low) helps you get a good night's sleep. This unit is designed for through-the-wall installation and is not designed for standard window installation (WALL SLEEVE SOLD SEPARATELY).
  • With a 10.5 energy efficiency ratio (EER), this 12,000 BTU through the wall air conditioner can effectively cool rooms up to 550 sq. ft and dehumidify up to 2.5 pints per hour. Perfect for medium to large bedrooms, living rooms, basements, bathrooms, or family rooms. (Product is not suitable for window installation).
  • Smart Remote Control: With a thermostat built into the remote control, it's able to sense the temperature of the room and adjust as needed. The 'Follow Me' remote makes it easier to control the unit from anywhere in the room and its integrated thermostat signals the AC to cool the space based on where you are.
  • Front Access Filter: Let's face it. Filters collect dust. With our front-access design, cleaning that dusty filter is a piece of cake. Simply pull it out, vacuum or rinse and dry, and slide back into place for a reliable clean. An easy clean washable and reusable mesh filter makes maintenance hassle free. The unit will alert you through the Check Filter signal when it is time to clean.
  • Custom Cooling: While there are 3 cooling modes and 3 fan speeds pre-programmed, you have flexibility. The Auto option will automatically ramp up and down the fan speed to keep you're pre-set temperature constant. The Energy-saver mode conserves energy and saves you money by turning off the compressor once your desired temperature is reached. This AC unit is ideal for climate control in your home, apartment, bedroom, or living room.
  • Universal Fit: This air conditioner will fit in your existing 24. 5" to 27" durable sleeve. We guarantee it. At 20. 3" D x 24. 2" W x 14. 5" H, we provide the foam seals and installation kit necessary to retrofit your existing sleeve. If you don't have a sleeve, the matching Keystone KSTSLV1 is also available for purchase (sold separately), which allows for an easy, sturdy installation. 7-ft. LCDI power cord with NEMA 5-15P plug uses standard 115V electrical outlet
  • Temperature sensing LCD remote control allows you control the temperature from across the room
  • Auto-restart saves your settings for when power is restored to the unit
  • Adjustable 4-way air flow direction allows you to easily control the direction of the cool air
  • Quiet operation for a good night's sleep (56.5 dB on low)
  • 3 cooling speeds, 3 fan speeds, plus Auto Cool for cooling flexibility
  • Programmable 24-hour on/off timer cools on your schedule
  • Energy-saver mode conserves energy and saves you money
  • Sleep mode gradually increases room temperature after being activated
  • Easy-clean, slide-out mesh filter with check filter alert on the unit
  • Extra-long 7 ft. 3-prong power cord makes extension cords unnecessary
  • U.L. safety listing
  • Wall sleeve sold separately - KSTSLV1
  • Which type of air conditioner is best for your home?
  • Click here to learn more about Eco Options and Energy Efficiency
  • Return Policy
  • California residents

Additional Resources

From the Manufacturer



Dimensions: H 14.5 in, W 24.2 in, D 20.3 in


Cut-Out Depth (in.)0 inCut-Out Height (in.)0 in
Cut-Out Width (in.)0 inProduct Depth (in.)20.3 in
Product Height (in.)14.5 inProduct Width (in.)24.2 in


Air Conditioner FeaturesFilter Light Reminder, Sleep Setting "Sleep Mode", TimerAir Conditioner Product TypeThrough the Wall Unit
Air direction/circulation4-wayAmperage (amps)10
Appliance CategoryA/Cs and FansAppliance SeriesNot Applicable
BTU Cooling Rating (ASHRAE)12000 BTUBTU Cooling Rating (DOE SACC)12000 BTU
BTU Heat RatingNo HeatColor FamilyWhite
Combined Energy Efficiency Ratio (CEER)0Commercial/ResidentialResidential
Control TypeRemote ControlControlsDigital
Cooling Area (Sq. Ft.)550Cord Length (ft.)5
Cord Length (ft.)4.5 ftDecibel (Sound) Rating60 dBA
Decibel Rating60 dBAEnergy Efficiency Ratio (EER)10.5
Filter TypeMeshHeater IncludedWithout Heater
IncludedRemote ControlNumber of cool settings3
Number of Fan Speeds3 SpeedsPack Size1
Plug TypeParallelProduct Weight (lb.)75.9 lb
Returnable90-DayVoltage (volts)115
Wattage (watts)1140

Warranty / Certifications

Certifications and ListingsUL ListedManufacturer Warranty1-year parts and labor, plus additional 4 years for sealed system

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

4.2 out of 5
  • 4.2
    out of 340 reviews
  • 78% recommend this product
Filter by:
Showing 1-10 of 340 reviews
Great AC for my needs, wish I had two. Installed in my LR and it does wutit does when it do wutit do. Since i am a disabled vet w/limited income i can only afford one of these beauties.
    • Recommended
    I have 2 Keystone through the wall air conditioners now so I have nothing else to compare it too....
    I have 2 Keystone through the wall air conditioners now so I have nothing else to compare it too. The 1st one worked so well I never gave a different manufacturer a second thought.
    • DIY
    • Verified Purchase
    • Recommended
    2 found this review helpful
    I have a 450 s.f. lunch room and this AC unit keep it nice and cool. Designed for up to 550 s.f. ...
    I have a 450 s.f. lunch room and this AC unit keep it nice and cool. Designed for up to 550 s.f. and works wonderfully. It is quiet too which is great when we hold company meetings in the lunch room.
    • Verified Purchase
    • Recommended
    3 found this review helpful
    i been using this for only 2 weeks May 1 to 16 with warm weather starting and with a couple days ...
    i been using this for only 2 weeks May 1 to 16 with warm weather starting and with a couple days up to 90,, and very happy with cooling,, the temperature is about 39-40 degrees measured with mechanical thermometer attached to the vents and that is good and cold for an A/c unit .. it will take down the temp 1-2 degrees in about 15 minutes and after an hour the room will be comfortable to being cold .. it may be a little loud but for a large capacity unit it has to move a lot of air ,therefore, the fan noise ... but my priority is cooling and don't care about the noise ... if you notice any brand that is quiet cool,, they are around 8k btu, and smaller, and on low fan speed ,, if you want a quiet unit get that and not this size .. I got the keystone because of price when compared to name brands i see are 75-90% higher cost up to 700 and higher ... as long as this will cool i will be happy and I don't care about electric cost as long as i am comfortable .. i am also very happy with HomeDepot.com for refunding the difference what I paid when it went on sale twice in a week after I bought this too ... Thank you homeDepot.com This is made in china ,, it is all you will find everywhere ,, I also seen what looks to be same units but with different names brands ,, and for lower price down to $300 on the internet but I decided to buy and ship to homeDepot store for safer transporting and it arrive for my store pickup in perfect condition, the unit and the box .. very happy again about that ... which is another reason i did not purchase from other seller and then take a chance with shipping abuse which seems to occur ,, reading other people reviews ... last year , I used a portable a/c 12k btu last year and there is no comparison with a wall unit that will work way better and more efficient .. i installed in my family room ,, and have central a/c,, i expect this to cut usage cost that i don't run the central to cool the whole house and will use the central at nite where it works more efficiently to cool,, then this wall unit to cool the room during day only ...or maybe even the whole first floor .. i won't know til full summer heat of july-aug .. Another plus now ,, if this fails,, another wall unit can be installed very easy and i bet it would only take me 10 minutes. . and if the central ac fails ,, i still have cooling .. backup ..
    • DIY
    • Verified Purchase
    • Recommended
    14 found this review helpful
    i finally took out the 1979 air conditioner and bought this. what a difference. place was cool in 1 hr. 90 degrees to 81 thats all she wrote
    • DIY
    • Verified Purchase
    • Recommended
    12 found this review helpful
      Cooling is sub par room is 350 sq Ft
          This unit has been cooling my area very well and I'm very pleased with the functionality of it as well as the ease of use upon installation!
            i got curbside, im lazy af
            Melody and daniela helped me out and the one with the bigg butt gave me a cold water. Both were greatly appreciated
              • Recommended
              Showing 1-10 of 340 reviews

              Compare Similar Items

              current product

              Heater Included

              Without Heater

              With Heater

              Without Heater

              Without Heater

              Voltage (volts)






              Remote Control

              Remote Control

              Remote Control

              Remote Control

              Air Conditioner Features

              Filter Light Reminder, Sleep Setting "Sleep Mode", Timer

              Overload Protection, Sleep Setting "Sleep Mode", Timer

              Adjustable Humidistat, Automatic Shutoff, Filter Light Reminder, Timer

              Automatic Shutoff, Filter Light Reminder, Sleep Setting "Sleep Mode", Timer

              Plug Type