Finding the best wall heater air conditioner helps you maintain optimal temperature year-round in your home or office. These units combine heating and cooling capabilities in one convenient through-the-wall or window installation system, ideal for rooms ranging from small bedrooms to larger living areas. Below is a summary of top models, carefully selected for performance, energy efficiency, and smart features to suit varied needs.
| Product Name | Cooling & Heating Capacity (BTU) | Room Size (Sq.Ft.) | Smart Features | Installation Type |
|---|---|---|---|---|
| LG 9,800 BTU Through the Wall Air Conditioner with Heat | 9,800 / Supplemental Heat | Up to 440 | Remote control, Digital panel | Through the wall |
| TCL H14T9XH 14,000 BTU Smart Through-The-Wall AC & Heater | 14,000 / 8,600 | Up to 700 | Alexa & Google Assistant compatible | Through the wall |
| Keystone 18,800 BTU Window-Wall Air Conditioner with Heater | 18,800 / 16,000 | Up to 1000 | Smart remote with room temperature sensor | Window-wall unit |
| Midea 12,000 BTU Smart Inverter AC with Heat & Dehumidifier | 12,000 / Supplemental Heat | Up to 550 | Alexa & Google Assistant, App control | Window unit |
| OLMO 8,000 BTU 115V Through-the-Wall Air Conditioner & Heater | 8,000 / 4,200 | Not specified | Built-in wireless smart kit, Remote included | Through the wall |
LG 9,800 BTU Through the Wall Air Conditioner with Supplemental Heat
The LG 9,800 BTU wall unit offers both air conditioning and supplemental heating, ideal for maintaining steady temperatures in rooms up to 440 square feet. It supports multiple fan speeds for cooling, heating, and airflow customization. The digital control panel paired with a remote offers easy usability, including a 4-way air deflection system for flexible airflow direction. Maintenance is simplified with a removable, washable filter and filter light reminder. This unit is well-suited for bedrooms or offices, ensuring efficient year-round temperature control.
TCL H14T9XH 14,000 BTU Smart Through-The-Wall Air Conditioner & Heater
This TCL wall unit combines 14,000 BTU cooling with an 8,600 BTU heater, covering spaces up to 700 square feet. It features a built-in dehumidifier to improve air quality and reduce humidity, activated in Dry Mode. Smart home integration allows voice control via Amazon Alexa or Google Assistant, enabling remote adjustments without manual interaction. This model is ideal for users seeking advanced convenience alongside powerful temperature control for mid-sized spaces.
Keystone 18,800 BTU Window-Wall Air Conditioner with 16,000 BTU Supplemental Heating
The Keystone unit offers substantial capacity for large rooms up to 1,000 square feet with 18,800 BTU cooling and 16,000 BTU supplemental heating. It includes multiple modes such as dehumidification and fan circulation for versatile use. The supplemental heat is suitable for mild temperatures as a secondary heat source. A “Smart” remote continuously monitors and adjusts the temperature based on the room’s current conditions, providing precise comfort control for living rooms or apartments.
Midea 12,000 BTU Smart Inverter Air Conditioner Window Unit with Heat and Dehumidifier
The Midea 12,000 BTU inverter AC is energy star certified, making it an excellent choice for energy-efficient cooling and heating in rooms up to 550 square feet. It features five operating modes including heat, cool, dry, auto, and fan, plus three-speed fan settings. The unit incorporates a smart control system compatible with Alexa, Google Assistant, and a dedicated app for wireless operation. Its inverter technology provides faster cooling while using less electricity, with a washable front-panel filter to support maintenance.
OLMO 8,000 BTU 115V Through-the-Wall Air Conditioner & Heat System
The OLMO 8,000 BTU unit is designed for residential or commercial use with an 8,000 BTU cooling output and 4,200 BTU heating capacity. It runs on 115V using R-32 refrigerant, which is environmentally friendlier. This through-the-wall model comes with a wall sleeve included for straightforward installation and features an integrated wireless smart kit with remote control. Its compact design makes it suitable for smaller rooms requiring efficient heating and cooling solutions.
Buying Guide for Wall Heater Air Conditioners
Choosing the right wall heater air conditioner depends on several critical factors to ensure compatibility and optimal comfort:
1. Cooling and Heating Capacity
Select a unit with BTU ratings appropriate to your room size. Oversized units waste energy, while undersized units struggle to maintain temperature. For example, 8,000–10,000 BTUs cover small rooms (~400 sq.ft.), while 14,000–18,000 BTUs suit larger rooms (700–1000 sq.ft.).
2. Installation Type
Decide between through-the-wall and window-wall units based on the available space and installation feasibility. Through-the-wall units provide a sleek permanent solution, while window units offer easier installation but require adequate window space.
3. Energy Efficiency and Certifications
Look for Energy Star certified units or those with inverter technology for reduced electricity consumption. Energy-efficient units help save on costs and reduce environmental impact.
4. Smart Features and Controls
Smart connectivity is beneficial for remote control via voice assistants (Alexa, Google Assistant) or mobile apps. Features like programmable timers, temperature sensors, and dehumidifiers enhance usability and comfort.
5. Supplemental Heating Capacity
Verify whether the heater is supplemental—intended to be a secondary heat source—or capable of primary heating depending on your climate needs. Supplemental heaters are suitable for milder winters.
6. Noise Levels and Airflow
Review fan speeds and noise ratings if you require quiet operation for bedrooms or offices. Adjustable louvers and multiple airflow directions provide enhanced comfort.
7. Maintenance
Choose units with washable and easy-access filters to maintain air quality and system efficiency. Filter change reminders are an added convenience.