6 Best Through-the-Wall Air Conditioners with Heat Under $600 in 2026
We compared six heat and cool wall units under $600 on cooling capacity, heating output, room size, smart features and sleeve fit.
By Daniel Brooks
Updated October 19, 2026
Raising the budget a little opens up the most capable heat and cool wall units for living rooms and apartments. Our list of the best through-the-wall air conditioners with heat under $600 compares six models, mostly 12,000 BTU units with strong 230 volt heaters, plus a smart 8,000 BTU unit for small rooms and a kit that includes the wall sleeve. To browse every model we cover, visit our Through-the-Wall Air Conditioners with Heat page.
We compared these through-the-wall air conditioners with heat under $600 on cooling capacity, heating output, room size, smart features and sleeve fit. Prices change often, so check the product cards for the current price of each unit.
All Products Compared
| Product | Best For | Cooling | Heating | Noise | Notable Feature |
|---|---|---|---|---|---|
| TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater | Overall | 12,000 BTU | 11,600 BTU | 50 dB | App, Alexa, Google, Dry mode |
| ROVSUN 12000 BTU Through the Wall Air Conditioner with Heat | Simple controls | 12000 BTU | 10600/8600 BTU | 57 dB | 4.3 average rating |
| OLMO 12,000 BTU 230V Through-the-Wall AC & Heater with Sleeve | Sleeve included | 12,000/11,700 BTU/h | 10,600/8,600 BTU/h | 61.1 dB | Wall sleeve and smart kit |
| Whirlpool 12,000 BTU Wall Air Conditioner with Heat | Universal sleeve fit | 12,000/11,600 BTU | 10600/8600 BTU | 57 dB | Fits 24.5 to 27 inch sleeves |
| TCL 8,000 BTU Smart Through-the-Wall Air Conditioner with Heater | Small rooms on 115V | 8,000 BTU | 4,200 BTU | 57 dB | Standard outlet, Dry mode |
| TABU 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater | Newer smart option | 12,000 BTU | Heat mode | 51 dB | App, Alexa, Google |
| Award | Product | WikiCooling Score About WikiCooling ScoreThe WikiCooling Score is our own rating from 0 to 10, based on the criteria described on our How We Review page. It reflects research, not laboratory measurement, and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Value |
TCL 12,000 BTU Smart Through-the-Wall Air
|
7.6/10 | Buy |
| Best Premium |
ROVSUN 12000 BTU Through the Wall Air Conditioner
|
8.3/10 | Buy |
| Best Budget |
OLMO 12,000 BTU 230V Through-the-Wall AC & Heater
|
Buy | |
Whirlpool 12,000 BTU Wall Air Conditioner
|
7.8/10 | Buy | |
|
TCL 8,000 BTU Smart Through-the-Wall Air
|
Buy | ||
| Best Overall |
TABU 12,000 BTU Smart Through-the-Wall Air
|
9.4/10 | Buy |
TCL 12,000 BTU Smart Through-the-Wall Air
Take control over your home comfort. The TCL 12,000 BTU Smart Through-the-Wall Air Conditioner is equipped with a 11,600 BTU heater so you can set and maintain your ideal temperature in spaces up to 550 sq. ft. And with its included remote and the TCL Home mobile app, you can adjust its settings without having to get up from the comfort of your couch. You can also pair it with Alexa or Google Assistant-enabled devices to control it with simple voice commands. This wall unit helps keep your energy bill low with Sleep and Eco modes that prioritize energy efficiency, and it includes several fan speeds (low, medium, high, and auto in cool mode) along with 4-way ventilation and multidirectional louvers to ensure even and consistent cooling across your space. Its washable and reusable filter helps protect the life of your AC while also reducing large airborne particles like dust and pet hair. The unit comes with guided instructions so you don’t have to be an expert technician to set up your through-the-wall AC. Once set up, the LED display makes controlling your wall AC simple. It’s time to enjoy your home the way it was meant to be. Sleeve not included. Compatible sleeve dimensions: 26”x20”x15.57.
ROVSUN 12000 BTU Through the Wall Air Conditioner
This 230V through-the-wall air conditioner delivers 12,000 BTU of cooling and up to 10,600 BTU of heating for rooms up to 550 square feet. It offers multiple modes including dehumidification and a 24-hour timer, with easy-clean filters and a remote control. Ideal for bedrooms, apartments, and small offices seeking year-round climate control.
Pros
- Cools and heats spaces up to 550 sq ft
- Multiple operating modes including dehumidification
- Easy-clean washable filter
- Remote control included
- Energy-saving ECO mode
Cons
- Noisy on medium and high fan settings
- Requires 230V outlet, not standard 115V
- Wall sleeve sold separately
OLMO 12,000 BTU 230V Through-the-Wall AC & Heater
Product description The Olmo TTW Through the Wall Unit Olmo’s “Through The Wall” air conditioning unit is a versatile and efficient cooling solution designed to seamlessly integrate into your living space. This unit combines convenience, efficiency, and comfort, all in one sleek package. Some of its great features include a remote control that allows you to change settings, adjust temperature, and switch modes from the comfort of your couch or bed. Whether you’re upgrading your home or office, Olmo has you covered, making this unit an excellent choice for any room. Olmo takes convenience to the next level with “Smart Connect” letting you control the unit remotely using your smartphone. The exclusive remote controller features include Sleep Mode, Timer, Auto Restart and a Self evaporating system. Wall Sleeve included with your purchase! From the brand OLMO offers a range of air conditioning and heating solutions, such as ducted and ductless mini splits, Multi-positional Air Handlers, and Through The Wall systems. Known for affordability and quality, OLMO integrates cutting-edge technology to deliver reliable, energy-efficient, and user-friendly products. Our commitment to innovation ensures high SEER2 ratings, minimal noise, and effective performance, making OLMO a smart choice for any space. Through-The-Wall A/C Single Zones Multi Zones
Whirlpool 12,000 BTU Wall Air Conditioner
This Whirlpool through-the-wall air conditioner delivers 12,000/11,600 BTU of cooling for rooms up to 550 square feet, plus supplemental heat for chilly evenings. It fits standard wall sleeves and includes a remote, programmable timer, and Eco mode. Best suited for homeowners seeking a permanent cooling solution with basic heating capability.
Pros
- Powerful cooling for large rooms
- Supplemental heat for mild cold
- Fits standard wall sleeves
- Remote control included
- Easy-clean washable filter
Cons
- Requires 230V/15A outlet
- SEER 9.6 is below modern standards
- Heavy at 72.3 pounds
TCL 8,000 BTU Smart Through-the-Wall Air
Take control over your home comfort. The TCL 8,000 BTU Smart Through-the-Wall Air Conditioner is equipped with a 4,200 BTU heater so you can set and maintain your ideal temperature in spaces up to 350 sq. ft. And with its included remote and the TCL Home mobile app, you can adjust its settings without having to get up from the comfort of your couch. You can also pair it with Alexa or Google Assistant-enabled devices to control it with simple voice commands. This wall unit helps keep your energy bill low with Sleep and Eco modes that prioritize energy efficiency, and it includes several fan speeds (low, medium, high, and auto in cool mode) along with 4-way ventilation and multidirectional louvers to ensure even and consistent cooling across your space. Its washable and reusable filter helps protect the life of your AC while also reducing large airborne particles like dust and pet hair. The unit comes with guided instructions so you don’t have to be an expert technician to set up your through-the-wall AC. Once set up, the LED display makes controlling your wall AC simple. It’s time to enjoy your home the way it was meant to be. Sleeve not included. Compatible sleeve dimensions: 26”x20”x15.57.
TABU 12,000 BTU Smart Through-the-Wall Air
Product description Product Introduction
Top 3 Through-the-Wall Air Conditioners with Heat Under $600 Reviewed
#1 TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater: Best Overall
Why We Picked It
The TCL H12T9XH packs the strongest heater, the lowest listed sound level among established models and the most polished smart setup in this price range. Its 11,600 BTU heater nearly matches the 12,000 BTU cooling section, so it can properly warm a living room on a cool day. TCL rates it for spaces up to 550 square feet, lists 50 dB, and the unit has a 3.9 average from 22 ratings.
The TCL Home app, Alexa and Google Assistant handle remote and voice control, and Dry, Sleep and Eco modes add flexibility. In cool mode, you get low, medium, high and auto fan speeds, along with 4-way ventilation and multidirectional louvers. It runs on 230 volts with a rated draw of 1160 watts in cooling and uses R-32 refrigerant.
Key Specifications
- Cooling Capacity: 12,000 BTU
- Heating Capacity: 11,600 BTU
- Room Size: Up to 550 sq ft
- Power: 230 volts, 1160 watts
- Noise Level: 50 dB
- Weight: 73.2 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
TCL lists a compatible sleeve of 26 by 20 by 15.57 inches. Measure your existing sleeve before ordering.
Best For
This unit is best for living rooms and large bedrooms where you want strong heat, quiet cooling and smart control.
Check the current price and availability of the TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater on Amazon.
Read our full TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater review.
#2 ROVSUN 12000 BTU Through the Wall Air Conditioner with Heat: Best Simple Controls
Why We Picked It
The ROVSUN 12000 BTU is the pick if you want a strong heater without paying for smart features. It has the highest average among established models in this guide, 4.3 from 22 ratings shared across its series, and pairs 12000 BTU of cooling with a 10600/8600 BTU heater for spaces up to 550 square feet.
The LED panel and remote control four modes (Cool, Heat, Fan and Dry), 3 fan speeds, a 24 hour timer and an ECO setting, and the thermostat runs from 61 to 88 degrees F. The washable filter comes out of the front panel without tools. It fits standard 25.5 inch sleeves and includes a trim kit and rear grille. ROVSUN lists 57 dB and a rated draw of 1160 watts in cooling.
Key Specifications
- Cooling Capacity: 12000 BTU
- Heating Capacity: 10600/8600 BTU
- Room Size: Up to 550 sq ft
- Power: 230V, 1160 watts
- Noise Level: 57 dB
- Weight: 72 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
This version has no app control. Confirm that your sleeve is the standard 25.5 inch size.
Best For
This unit is best for buyers who want a proven heat and cool unit with straightforward controls for a medium to large room.
Check the current price and availability of the ROVSUN 12000 BTU Through the Wall Air Conditioner with Heat on Amazon.
Read our full ROVSUN 12000 BTU Through the Wall Air Conditioner with Heat review.
#3 OLMO 12,000 BTU 230V Through-the-Wall AC & Heater with Sleeve: Best with Sleeve Included
Why We Picked It
This OLMO listing bundles the OW-P12HS230WF with a wall sleeve, which makes it a complete kit for a new wall opening or for replacing a rusted sleeve. The unit is rated at 12,000/11,700 BTU/h of cooling and 10,600/8,600 BTU/h of heating at 230 and 208 volts, and it uses R-32 refrigerant.
The built-in smart kit adds app and voice control alongside the push button panel with LED display and the remote. Sleep mode, a timer and auto restart cover everyday needs. The listing shows 61.1 dB, louder than the TCL and ROVSUN, and the bundle weighs 90 pounds. It has 9 ratings on its listing.
Key Specifications
- Cooling Capacity: 12,000/11,700 BTU/h
- Heating Capacity: 10,600/8,600 BTU/h
- Power: 208/230V, 60Hz
- Noise Level: 61.1 dB
- Included: Wall sleeve, remote, smart kit
- Weight: 90 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
If your existing sleeve is in good condition, the unit alone costs less. Plan on two people, and a carpenter if the wall opening is new.
Best For
This unit is best for new wall openings and replacements where the old sleeve needs to go.
Check the current price and availability of the OLMO 12,000 BTU 230V Through-the-Wall AC & Heater with Sleeve on Amazon.
Other Models Worth Considering
Whirlpool 12,000 BTU Wall Air Conditioner with Heat (WHAT122-HAW). The best fit for an unknown sleeve, because it accepts sleeves from 24.5 to 27 inches wide. It offers 10600/8600 BTU of supplemental heat for spaces up to 550 square feet, up to 1.6 pints per hour of dehumidifying, 8-way louvers and a 24 hour timer. It needs a 230V/15A outlet, lists 57 dB and has a 4.0 average from 10 ratings.
TCL 8,000 BTU Smart Through-the-Wall Air Conditioner with Heater (H8T91H). The small-room option in this price range, with a 4,200 BTU heater for rooms up to 350 square feet on a standard 115 volt outlet. It has the TCL Home app, Alexa and Google Assistant support and Dry mode, lists 57 dB and draws a rated 790 watts. It has 41 ratings on its listing.
TABU 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater. A newer smart unit for rooms up to 550 square feet with app control, Alexa and Google Assistant support and Cool, Heat, Dry and Fan modes. TABU lists 51 dB. It has only 2 ratings so far, and the listing does not give a heating figure.
What to Expect from Through-the-Wall Air Conditioners with Heat Under $600
This price range is where most 12,000 BTU heat and cool wall units sit. Expect heaters of roughly 10,600 to 11,600 BTU on a 230 volt supply, enough to warm a living room or studio on cool days, and a choice between simple panel and remote controls or full smart features. A few listings bundle the wall sleeve, which is worth the extra cost if your old sleeve is damaged.
For more choices, see our guides to through-the-wall air conditioners with heat at a lower price and 12,000 BTU through-the-wall air conditioners with heat. The product cards show the current price for each unit.
How to Choose a Through-the-Wall Air Conditioner with Heat Under $600
Size the Unit to the Room
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 |
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.
Count the Total Cost
Only the OLMO bundle here includes a wall sleeve. For the other units, add the cost of a sleeve if you do not already have a good one, and add an electrician if you need a new 230 volt receptacle.
Check the Outlet
Every 12,000 BTU unit in this guide needs a 230 volt receptacle, and Whirlpool specifies a 15 amp outlet. The TCL 8,000 BTU is the only standard outlet option here.
Weigh Track Record Against Features
The ROVSUN and TCL 12,000 BTU units have the most ratings among the larger models. The TABU and the OLMO bundle have far fewer, so they carry more uncertainty despite strong feature lists.
How We Evaluate Through-the-Wall Air Conditioners with Heat Under $600
We rank heat and cool wall units on manufacturer specifications, listing details and aggregated buyer ratings. For this list we kept only through-the-wall chassis with a heat mode that were listed under $600 when we compared them, and excluded cooling-only units, window units and bare sleeves. We weighed heating output, room coverage and buyer feedback first, giving more weight to ratings from larger numbers of buyers, then compared noise, smart features, sleeve fit and warranty.
Frequently Asked Questions
What is the best through-the-wall air conditioner with heat under $600?
The TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater, for its strong heater, 50 dB listing and smart control.
Which one includes a wall sleeve?
The OLMO 12,000 BTU 230V Through-the-Wall AC & Heater with Sleeve.
Which one runs on a standard outlet?
The TCL 8,000 BTU unit runs on 115 volt power.
Which one fits the most sleeve sizes?
The Whirlpool 12,000 BTU unit fits sleeves from 24.5 to 27 inches wide.
Final Verdict
The TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater is the best through-the-wall air conditioner with heat under $600 for most homes, with a strong heater, a 50 dB listing and full smart control. For a proven unit with simple controls, choose the ROVSUN 12000 BTU Through the Wall Air Conditioner with Heat. For a new wall opening, the OLMO 12,000 BTU 230V Through-the-Wall AC & Heater with Sleeve includes everything you need.
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.