Best Large Through the Wall Air Conditioners for Bigger Rooms and Apartments
Answering the search for large through-the-wall air conditioners, these models cool bigger spaces without occupying window area. This guide highlights units well suited for living rooms, bedrooms, and open layouts. Ideal buyers include apartment residents needing steady climate control, or homeowners upgrading from window units to a cleaner wall installation. The top picks below balance cooling power, efficiency, and easy installation. A quick buying table is provided to compare key specs at a glance.
| Product | BTU Range | Best For | Special Note |
|---|---|---|---|
| LG 10,000 BTU Through the Wall | ≈ 9,800–10,000 BTU | Medium-to-large living spaces up to 440 sq ft | Energy efficient R-32 refrigerant; 4-way deflection |
| Keystone 10,000 BTU Through the Wall | 10,000 BTU | Bedrooms or small living areas up to 450 sq ft | Built-in dehumidifier; universal trim kit |
| LG 14,000 BTU Through the Wall | ≈ 14,000 BTU | Larger rooms up to 700 sq ft | Remote, 4-way deflection; Auto Restart |
| Keystone 14,000 BTU With Supplemental Heat | 14,000 BTU cooling; 10,600 BTU heat | Large rooms up to 700 sq ft; year-round comfort | Supplemental heat; requires 230V/20A |
| Frigidaire 12,000 BTU Through-the-wall | 12,000 BTU | Medium-to-large rooms up to 550 sq ft | Dehumidifier; is easier to control with timer |
LG 10,000 BTU Through the Wall Air Conditioner
Best for mid-to-large living spaces or apartments up to about 440 square feet, this LG unit uses energy-efficient R-32 refrigerant with an EER around 10.7. It supports three cooling speeds and three pre-programmed modes, and includes a turbo setting for quick cooling. A Dry mode removes moisture, which helps when humidity is high. The 4-way air deflection provides flexible airflow, and Energy Saver mode circulates air after cooling to save energy. Best for buyers who prioritize efficiency and steady comfort in medium rooms; avoid if you need a larger home cooling capacity beyond 440 sq ft.
- 3 cooling speeds and 3 modes
- Energy Saver and Dry modes
- Turbo cooling option
Keystone 10,000 BTU Through the Wall Air Conditioner
Best for compact spaces within apartments or small bedrooms up to 450 sq ft, Keystone’s 10,000 BTU unit pairs effective cooling with a built-in dehumidifier. It features three cooling modes, three fan speeds, four-way air louvers, and a programmable timer for flexible usage. The universal interior trim kit supports straightforward installation. Choose this if you want reliable cooling with humidity control in smaller rooms; caution: installation requires compatible interior trim and electrical provisions.
- Three cooling modes and three fan speeds
- Built-in dehumidifier; programmable timer
- Universal interior trim kit
LG 14,000 BTU Through the Wall Air Conditioner
Best for larger living rooms or open-plan spaces up to 700 sq ft, this LG model offers three cooling and three fan speeds with Auto Cool, plus four-way air deflection for balanced airflow. A digital control panel and remote provide easy operation, and the 4-way deflection helps direct air where it’s needed most. It includes a washable filter and trim kit for convenience, with Auto Restart to resume operation after power outages. Choose this for bigger rooms; note that it is not suited for standard window venting and is designed for wall installation.
- Three cooling and fan speeds; Auto Cool
- Remote control; digital panel
- Removable, washable filter; 4-way air deflection
Keystone 14,000 BTU Wall Mounted With Supplemental Heat
Best for very large spaces up to 700 sq ft, this Keystone unit adds supplemental heat, which is helpful in shoulder seasons. It provides 14,000 BTU of cooling and 10,600 BTU of heating, along with dehumidification and a full-feature remote. The installation is designed for 230-volt/20-amp outlets, and a dedicated electrical setup is required. Use this if you need year-round climate control in big rooms; avoid if your electrical outlet setup cannot support 230V/20A.
- Supplemental heating for cooler periods
- 230V/20A electrical requirement
- Quiet operation in large spaces
Frigidaire 12,000 BTU Through-the-wall
Best for medium-to-large rooms up to 550 sq ft, Frigidaire’s 12,000 BTU model includes a built-in dehumidifier and a 3-in-1 design with fan and remote control. It features a washable filter with an alert, a digital timer for precise scheduling, and easy remote operation. Choose this if you want a balance of cooling power and humidity control in mid-to-large spaces; caution: expect higher energy use than smaller units if room size is not optimized for 550 sq ft.
- 3-in-1 wall unit with dehumidifier
- Digital controls and programmable timer
- Washable filter with maintenance alert
Buying Guide: Large Through-The-Wall AC Considerations
What size should you choose? For rooms up to 450 sq ft, 10,000 BTU models (or a compact 11,800 BTU LG unit) are often sufficient. For spaces up to 700 sq ft, 14,000 BTU units provide more reliable cooling. Always verify sleeve size, electrical requirements (voltage and amperage), and whether interior trim kits are included. If you need humidity control, prefer units with built-in dehumidification. For year-round comfort, consider models offering supplemental heat, but check electrical needs and installation feasibility.
How important is energy efficiency? Look for high EER and the refrigerant type. R-32 refrigerant tends to offer better efficiency with a lower environmental impact. A unit with auto-restart and programmable timer can also save energy by avoiding unnecessary operation.
Installation notes: Through-the-wall units require proper venting, sleeve compatibility, and secure mounting. Some models are designed for universal interior trim kits, which helps with a clean fit in various wall openings. If you rent, confirm wall modification permissions and electrical wiring requirements before purchase.
Frequently Asked Questions
- What does BTU indicate in through-the-wall AC units?
– BTU measures cooling capacity; higher BTU cools larger spaces, but oversizing wastes energy. - Can I install a through-the-wall unit myself?
– Installation typically requires cutting a wall opening and mounting a sleeve; some units include trim kits, but professional installation is often recommended for a secure, vented fit. - Do these units need special electrical wiring?
– Yes. Many large models require standard 115V, while 230V/20A configurations may be needed for the 14,000 BTU and larger units. - Is dehumidification always included?
– Most larger models include a built-in dehumidifier; this helps remove excess moisture in humid climates. - Which unit is best for a large living area?
– For spaces near 700 sq ft, a 14,000 BTU model is typically more effective, though layout and insulation affect performance. - Can these units run on a remote control?
– Yes. Most listed models include a remote and digital controls for convenient operation.