Choosing the right through the wall air conditioner and heater can ensure your room stays comfortable throughout the year. These units combine cooling, heating, and often dehumidifying functions, fitting seamlessly into your wall for an efficient climate solution. Below is a summary table featuring top-rated units selected for different room sizes and power needs.
| Product | BTU (Cooling/Heating) | Room Size | Voltage | Special Features |
|---|---|---|---|---|
| LG 9,800 BTU Through the Wall AC with Supplemental Heat | 9,800 / Supplemental Heat | Up to 440 Sq.Ft. | 230V | Remote, Auto-Restart, 4-Way Air Deflection |
| TCL H14T9XH 14,000 BTU Smart Through-the-Wall AC & Heater | 14,000 / 8,600 | Up to 700 Sq.Ft. | 230V | Smart Home Compatible, Dehumidifier |
| OLMO 8,000 BTU 115V Through-the-Wall AC & Heat System | 8,000 / 4,200 | Small to Medium Rooms | 115V | Includes Wall Sleeve, R-32 Refrigerant |
| Keystone 23,200 BTU Window-Wall AC with 16,000 BTU Heat | 23,200 / 16,000 | Up to 1,500 Sq.Ft. | 230V | Supplemental Heating, Smart Remote |
| Midea 12,000 BTU Smart Inverter AC with Heat & Dehumidifier | 12,000 / Supplemental Heat | Up to 550 Sq.Ft. | 115V | Energy Star Rated, Smart Controls |
Content Navigation
- LG 9,800 BTU Through The Wall AC With Supplemental Heat
- TCL H14T9XH Smart 14,000 BTU Through-The-Wall AC & Heater
- OLMO 8,000 BTU 115V Through-the-Wall Air Conditioner & Heat
- Keystone 23,200 BTU Window-Wall AC With 16,000 BTU Heating
- Midea 12,000 BTU Smart Inverter Air Conditioner and Heater
- Buying Guide for Through The Wall Air Conditioner and Heater Units
LG 9,800 BTU Through The Wall AC With Supplemental Heat
This LG unit offers dual functionality as an air conditioner and a supplemental heater, making it suitable for maintaining a steady temperature in bedrooms and offices up to 440 square feet. The two cooling, heating, and fan speeds allow personalized airflow adjustments for ultimate comfort.
The included remote control and digital control panel enhance usability, while 4-way air deflection directs airflow efficiently across your space. Maintenance is simplified with a removable, washable filter and a filter light reminder. The unit also includes a trim kit for easy installation.
TCL H14T9XH Smart 14,000 BTU Through-The-Wall AC & Heater
The TCL H14T9XH delivers 14,000 BTU cooling and 8,600 BTU heating capacity, suitable for rooms up to 700 square feet. It includes a built-in dehumidifier for reducing moisture and odors, improving overall indoor air quality.
This unit supports smart home integration with Alexa and Google Assistant for voice control. The remote control offers easy temperature and mode adjustments, adding convenience to your comfort management. This versatile air conditioner and heater is designed to keep you comfortable year-round.
OLMO 8,000 BTU 115V Through-the-Wall Air Conditioner & Heat
This OLMO unit combines 8,000 BTU cooling capacity with 4,200 BTU heating perfect for smaller spaces in homes, hotels, or commercial areas. It operates on standard 115V power and is charged with environmentally friendly R-32 refrigerant.
The unit includes a wall sleeve to simplify installation. It offers cooling and heating with a remote control and a built-in wireless smart kit for convenient operation. This product suits anyone requiring reliable, easy-to-install through-the-wall climate control.
Keystone 23,200 BTU Window-Wall AC With 16,000 BTU Heating
Designed for large areas up to 1,500 square feet, this Keystone unit provides powerful 23,200 BTU cooling and 16,000 BTU supplemental heating. It offers year-round comfort with cooling, supplemental heat, dehumidification, and fan functions.
The supplemental heating mode is optimized for mild temperatures between 23°F and 76°F, not intended as a primary heat source. The smart remote control senses room temperature and adjusts output automatically for efficient comfort delivery.
Midea 12,000 BTU Smart Inverter Air Conditioner and Heater
The Midea 12,000 BTU unit combines efficient cooling, heating, and dehumidifying functions for rooms up to 550 square feet. It features energy-saving inverter technology reducing electricity use by up to 35% compared to standard units.
Smart controls include voice commands via Alexa or Google Assistant, a 24-hour timer, and multiple modes (Heat, Auto, Cool, Dry, Fan). Supplemental heat is ideal unless outdoor temperatures drop below 41°F. A washable front panel filter ensures low maintenance.
Buying Guide for Through The Wall Air Conditioner and Heater Units
BTU Capacity and Room Size Matching
Selecting a unit with the appropriate BTU rating for your room size is crucial. Undersized units will struggle to reach desired temperatures while oversized units can cycle frequently, wasting energy and increasing wear. Always check manufacturer recommendations for room coverage.
Voltage and Electrical Compatibility
Through the wall units come in various voltage requirements, commonly 115V or 230V. Match the unit to your home’s electrical system to avoid additional wiring costs and safely power the appliance.
Heating Capabilities
Many units offer supplemental heat, suitable for mild cold periods but not as a main heat source. Determine if heating output meets your needs or if a dedicated heater is required for colder climates.
Smart Features and Controls
Modern units may include remote controls, digital displays, auto-restart, and voice-activated smart home integration. These features increase convenience and energy efficiency through programmable settings and hands-free operation.
Installation Components
Check whether the air conditioner comes with a wall sleeve or if it must be purchased separately. The sleeve is necessary for proper installation and insulation to maximize performance and prevent air leaks.
Air Quality and Additional Functions
Some units feature built-in dehumidifiers to reduce moisture and improve indoor air quality. Washable filters and filter alert functions aid maintenance and prolong unit lifespan.
Energy Efficiency
Energy Star-rated models and inverter technology help reduce power consumption and lower utility bills without compromising comfort. Consider these options if long-term operational cost is a priority.