6 Best Smart Through-the-Wall Air Conditioners with Heat of 2026
We compared six Wi-Fi heat and cool wall units with app and voice control on cooling, heating output, power needs, noise and sleeve fit.
By Daniel Brooks
Updated October 19, 2026
A smart through-the-wall air conditioner with heat lets you warm or cool a room from your phone or with a voice command, so the bedroom is comfortable before you go to bed and the living room is ready when you get home. These units connect over Wi-Fi to a brand app and work with Alexa or Google Assistant, while still offering a panel and remote. Our list of the best smart through-the-wall air conditioners with heat compares six of them on cooling, heating output, power needs, noise and sleeve fit. To browse every model we cover, visit our Through-the-Wall Air Conditioners with Heat page.
The list covers both 115 volt smart units for small rooms and 230 volt smart units with much stronger heaters for living areas.
All Products Compared
| Product | Best For | Cooling | Heating | Power | Noise |
|---|---|---|---|---|---|
| TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater | Overall | 12,000 BTU | 11,600 BTU | 230V | 50 dB |
| ROVSUN Smart 8,000 BTU Through the Wall Air Conditioner with Heat | Value | 8000 BTU | 4200 BTU | 115V | 61 dB |
| OLMO 12,000 BTU 230V Through-the-Wall AC & Heater | Mid-price 230V | 12,000/11,700 BTU/h | 10,600/8,600 BTU/h | 208/230V | 58 dB |
| TCL 8,000 BTU Smart Through-the-Wall Air Conditioner with Heater | Small humid rooms | 8,000 BTU | 4,200 BTU | 115V | 57 dB |
| TCL 10,000 BTU Smart Through-the-Wall Air Conditioner and Heater | Medium rooms | 10,000 BTU | 9,800 BTU | 230V | 57 dB |
| TABU 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater | Newer option | 12,000 BTU | Heat mode | Not stated clearly | 51 dB |
| 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 |
ROVSUN Smart 8,000 BTU Through the Wall Air
|
7.8/10 | Buy | |
| Best Budget |
OLMO 12,000 BTU 230V Through-the-Wall AC & Heater
|
8.1/10 | Buy |
|
TCL 8,000 BTU Smart Through-the-Wall Air
|
Buy | ||
| Best Premium |
TCL 10,000 BTU Smart Through-the-Wall Air
|
7.5/10 | 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 Smart 8,000 BTU Through the Wall Air
This through-the-wall unit from ROVSUN delivers 8,000 BTU of cooling and 4,200 BTU of heating for rooms up to 350 square feet. It includes WiFi and voice control, a remote, and multiple operating modes. A good fit for anyone needing a combined AC and heater in a standard wall sleeve.
Pros
- Heats and cools for year-round use
- Smart controls with app and voice
- Fits standard 25.5-inch wall sleeve
- Washable filter for easy maintenance
Cons
- No inverter compressor
- Heavy at 62.8 lbs
- Wall sleeve not included
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. Olmo’s TTW Sleeve is available to purchase separately for easy installation. 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
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.
TCL 10,000 BTU Smart Through-the-Wall Air
Take control over your home comfort. The TCL 10,000 BTU 230V Smart Through-the-Wall Air Conditioner is equipped with a 9,800 BTU heater so you can set and maintain your ideal temperature in spaces up to 450 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 Smart Through-the-Wall Air Conditioners with Heat Reviewed
#1 TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater: Best Overall
Why We Picked It
The TCL H12T9XH has the most refined smart setup in this guide and a heater that nearly matches its cooling. The TCL Home app lets you change modes, set points and fan speed from anywhere, and Alexa and Google Assistant handle voice commands. Its 11,600 BTU heater nearly matches the 12,000 BTU cooling section, so a schedule in the app can bring a living room up to temperature before you wake.
TCL rates it for spaces up to 550 square feet and lists a low 50 dB. Dry, Sleep and Eco modes, low, medium, high and auto fan speeds in cool mode, 4-way ventilation and a washable filter round out the feature list. It runs on 230 volts with a rated draw of 1160 watts in cooling, uses R-32 refrigerant, and has a 3.9 average from 22 ratings.
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
- Smart Control: TCL Home app, Alexa, Google Assistant
| 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 smart home users who want app schedules, voice control and real heat in a living room.
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 Smart 8,000 BTU Through the Wall Air Conditioner with Heat: Best Value
Why We Picked It
The ROVSUN Smart 8,000 BTU is the most affordable way to get a smart heat and cool wall unit, and it plugs into a standard 115V outlet. It pairs 8000 BTU of cooling with a 4200 BTU heater for rooms up to 350 square feet, and its listing shows a 4.0 average from 48 ratings shared with ROVSUN’s larger smart sizes.
Alongside the panel and remote, you can use the phone app or Alexa and Google Assistant, and set routines for temperature changes. Five modes (Heat, Auto, Cool, Dry and Fan), three fan speeds plus auto, a 24 hour timer and an ECO saver cover daily needs. Auto mode switches between heating and cooling on its own, which suits spring and fall days. It fits a standard 25.5 by 15.25 inch sleeve.
Key Specifications
- Cooling Capacity: 8000 BTU
- Heating Capacity: 4200 BTU
- Room Size: Up to 350 sq ft
- Power: 115V, 1027 watts
- Noise Level: 61 dB on high
- Weight: 62.8 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
ROVSUN lists 61, 59 and 57 dB on high, medium and low. Use the low speed at night in a bedroom.
Best For
This unit is best for small rooms with a regular outlet where you want smart control at a modest price.
Check the current price and availability of the ROVSUN Smart 8,000 BTU Through the Wall Air Conditioner with Heat on Amazon.
Read our full ROVSUN Smart 8,000 BTU Through the Wall Air Conditioner with Heat review.
#3 OLMO 12,000 BTU 230V Through-the-Wall AC & Heater: Best Mid-Price 230V Pick
Why We Picked It
The OLMO OW-P12HS230WF brings a built-in smart kit and a strong heater to the 230 volt class for less than the TCL. It 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 has a 4.2 average from 13 ratings.
You can use the push button panel with its LED display, the remote, the phone app or voice control. Sleep mode, a timer, auto restart and a self evaporating system cover the essentials, and it uses R-32 refrigerant. OLMO lists 58 dB.
Key Specifications
- Cooling Capacity: 12,000/11,700 BTU/h
- Heating Capacity: 10,600/8,600 BTU/h
- Power: 208/230V, 60Hz
- Noise Level: 58 dB
- Smart Control: App and voice
- Weight: 85.8 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
OLMO does not give a room size. At 12,000 BTU, the ENERGY STAR chart points to about 450 to 550 square feet. The sleeve is sold separately.
Best For
This unit is best for apartments with a 230 volt outlet that want smart heat and cool control on a tighter budget.
Check the current price and availability of the OLMO 12,000 BTU 230V Through-the-Wall AC & Heater on Amazon.
Read our full OLMO 12,000 BTU 230V Through-the-Wall AC & Heater review.
Other Models Worth Considering
TCL 8,000 BTU Smart Through-the-Wall Air Conditioner with Heater (H8T91H). The small-room version of the TCL, with a 4,200 BTU heater for rooms up to 350 square feet on a 115 volt outlet. It brings the same 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.
TCL 10,000 BTU Smart Through-the-Wall Air Conditioner and Heater (H10T9XH). The medium-room TCL, rated for rooms up to 450 square feet, with a 9,800 BTU heater, the TCL Home app, Alexa and Google Assistant support and Dry mode. It needs a 230 volt outlet, lists 57 dB and draws a rated 980 watts. It has a 3.8 average from 17 ratings.
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. With only 2 ratings and few details on heating output, it is the least proven option here.
What to Expect from Smart Through-the-Wall Air Conditioners with Heat
Smart control is most useful on a heat and cool unit, because the right mode changes with the season and even within a day. With an app, you can schedule warmth for cold mornings and cooling for hot afternoons, or switch the unit off when you leave. Voice control through Alexa or Google Assistant makes quick changes easy. The smart features do not change how much heat a unit can make, so the outlet type still decides the heater size.
For more options, see our guides to through-the-wall air conditioners with heat and 115V through-the-wall air conditioners with heat. The product cards show the current price for each unit.
How to Choose a Smart Through-the-Wall Air Conditioner with Heat
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.
Pick the Outlet First
The ROVSUN and TCL 8,000 BTU units run on a standard 115 volt outlet with heaters of about 4,200 BTU. The TCL 10,000 and 12,000 BTU units and the OLMO need a 230 volt receptacle and carry far stronger heaters. Check the outlet beside your sleeve before you compare apps.
Compare the Apps and Assistants
TCL uses the TCL Home app on all three of its models, OLMO builds in a smart kit, and ROVSUN and TABU use their own apps. All the units here list voice control, and TCL, ROVSUN and TABU name Alexa and Google Assistant directly. Make sure your home Wi-Fi reaches the wall where the unit will sit.
Match the Sleeve
ROVSUN fits a 25.5 inch sleeve, OLMO uses a chassis about 24 inches wide, and TCL specifies 26 by 20 by 15.57 inches. Measure before ordering.
How We Evaluate Smart Through-the-Wall Air Conditioners with Heat
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 and built-in Wi-Fi or a built-in smart kit, and excluded units that need a separate smart plug or adapter. We weighed cooling, heating output and buyer feedback first, giving more weight to ratings from larger numbers of buyers, then compared app features, voice support, noise and sleeve fit.
Frequently Asked Questions
Which smart wall unit has the strongest heater?
The TCL 12,000 BTU unit, with an 11,600 BTU heater.
Is there a smart heat and cool wall unit for a standard outlet?
Yes. The ROVSUN Smart 8,000 BTU and the TCL 8,000 BTU both run on 115 volt power.
Which smart unit is the quietest?
The TCL 12,000 BTU unit lists 50 dB, followed by the TABU at 51 dB.
Do these work with Alexa?
The TCL, ROVSUN and TABU units list Alexa and Google Assistant support, and the OLMO lists voice control through its smart kit.
Final Verdict
The TCL 12,000 BTU Smart Through-the-Wall Air Conditioner with Heater is the best smart through-the-wall air conditioner with heat for most homes, with a polished app, a heater that nearly matches its cooling and a 50 dB listing. For smart control on a standard outlet at a modest price, choose the ROVSUN Smart 8,000 BTU Through the Wall Air Conditioner with Heat. For a 230 volt smart unit that costs less than the TCL, the OLMO 12,000 BTU 230V Through-the-Wall AC & Heater is the pick.
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.