Best Through the Wall Air Conditioners With Heat for Efficient Year-Round Comfort 2025

This post contains affiliate links. When you buy through links, we may receive a small percentage of the sale.

Finding the best through the wall air conditioner with heat is essential for maintaining a comfortable indoor environment all year long, especially in rooms where window units are not practical. These units provide both cooling and supplemental heating, offering a versatile climate control solution. Below is a summary table highlighting top-rated options to suit varied room sizes and features.

Product Cooling Capacity Heating Capacity Room Size Coverage Smart Features
LG 9,800 BTU Through the Wall AC with Heat 9,800 BTU Supplemental Heat Up to 440 Sq.Ft. Remote Control, Auto-Restart
TCL H14T9XH 14,000 BTU Smart Through-The-Wall AC & Heater 14,000 BTU 8,600 BTU Up to 700 Sq.Ft. Alexa, Google Assistant Compatible
OLMO 8,000 BTU Through-the-Wall AC & Heat System 8,000 BTU 4,200 BTU Residential/Commercial Use Wireless Smart Kit Included
LG 9,800 BTU Through-the-Wall AC with Supplemental Heat 9,800 BTU Supplemental Heat Up to 450 Sq.Ft. Electronic Control, Remote
Keystone 18,800 BTU Window-Wall AC with 16,000 BTU Heat 18,800 BTU 16,000 BTU Supplemental Heat Up to 1000 Sq.Ft. Smart Remote with Temperature Display

LG 9,800 BTU Through the Wall Air Conditioner with Supplemental Heat

LG 9,800 BTU Through the Wall Air Conditioner with Supplemental Heat

Check Price on Amazon

This LG through-the-wall unit serves as both an air conditioner and heater designed for rooms up to 440 square feet. It offers supplemental heat to keep your space warm during colder days, making it versatile for year-round comfort. The unit includes two cooling, heating, and fan speeds that allow for precise control over temperature and airflow. Featuring a digital control panel with remote control, it also provides a 4-way air deflection for targeted air distribution. Additional usability includes a washable filter, a filter light reminder, and an included trim kit for easy installation.

TCL H14T9XH 14,000 BTU Smart Through-The-Wall Air Conditioner and Heater

TCL H14T9XH 14,000 BTU Smart Through-The-Wall Air Conditioner and Heater

Check Price on Amazon

The TCL H14T9XH combines powerful cooling capacity with efficient heating, suitable for larger rooms up to 700 square feet. The unit cools with 14,000 BTUs and heats at 8,600 BTUs to maintain comfort in all seasons. A built-in dehumidifier improves air quality by reducing moisture and odors. Modern smart features include compatibility with Amazon Alexa and Google Assistant, enabling convenient voice control. This smart AC also offers a remote control for effortless adjustments.

OLMO 8,000 BTU 115V Through-the-Wall Air Conditioner & Heat System

OLMO 8,000 BTU Through-the-Wall Air Conditioner & Heat System

Check Price on Amazon

Call 888-896-7031 for Free Local HVAC Quotes – Compare and Save Today!

This OLMO through-wall air conditioner and heater is a dual-function unit with an 8,000 BTU cooling capacity and 4,200 BTU heating capability. It operates on standard 115V and includes a wall sleeve for simple installation. Charged with environmentally friendly R-32 refrigerant, the system is suitable for residential and commercial spaces. It also features a built-in wireless smart kit allowing remote operation. Make sure to verify your power receptacle to match the 115V specification before purchase.

LG 9,800 BTU Through-the-Wall AC with Supplemental Heat

LG 9,800 BTU Through-the-Wall AC with Supplemental Heat

Check Price on Amazon

This LG unit provides convenient cooling and supplemental heat for rooms up to 450 square feet. The device operates with two speeds for cooling, heating, and fan options to customize comfort levels. The unit includes user-friendly electronic controls alongside a remote control. Its 4-way air deflection design improves air circulation for more efficient climate management.

Keystone 18,800 BTU Window-Wall Air Conditioner With 16,000 BTU Supplemental Heating

Keystone 18,800 BTU Window-Wall Air Conditioner With 16,000 BTU Supplemental Heating

Check Price on Amazon

The Keystone window-wall AC unit delivers a robust 18,800 BTU cooling output and 16,000 BTU of supplemental heat, making it ideal for large rooms or apartments up to 1,000 square feet. Besides cooling and heating, it includes dehumidification and fan circulation modes. The supplemental heating is designed for mild to moderate cold conditions and is not a primary heat source. It features a smart remote control with an integrated temperature sensor that displays the room temperature, adjusting settings for efficient comfort.

Buying Guide For Through The Wall Air Conditioners With Heat

Heating And Cooling Capacity

Check the BTU ratings for both cooling and heating to ensure the unit can effectively manage the size of your room. Larger rooms require higher BTU ratings. Supplemental heat options are common but may vary in effectiveness depending on primary heating needs.

Call 888-896-7031 for Free Local HVAC Quotes – Compare and Save Today!

Energy Efficiency And Power Compatibility

Look for Energy Star certified units or those with advanced inverter technology to save on electricity costs. Verify the voltage and phase requirements (commonly 115V or 230V) to ensure compatibility with your home’s electrical system.

Smart Features And Controls

Consider units that support remote control, programmable timers, or voice assistants like Alexa or Google Assistant for convenient operation. Features like auto-restart and sleep modes add to user comfort and energy savings.

Installation Requirements

Many through-the-wall units include wall sleeves for easier setup, but some require separate purchases. Confirm the thickness of your wall and whether professional installation is needed. Window-wall models offer dual installation flexibility.

Additional Functionalities

Dehumidification helps improve indoor air quality and comfort, particularly in damp environments. Multiple fan speeds and air deflection options allow better airflow customization. Washable filters and maintenance indicators enhance usability.

Leave a Comment