LG 7,800 BTU Through the Wall Air Conditioner for Rooms up to 330 Sq

Our review finds the LG 7,800 BTU through-the-wall air conditioner best suited for bedrooms, home offices, and small apartments under 330 sq. ft. The bottom line: it cools evenly and offers energy-conscious operation thanks to an efficient R-32 refrigerant and a respectable EER of 10.7, making it a strong choice for buyers who want steady cooling, programmable convenience, and a through-the-wall installation rather than a window setup.

Key Features

• Energy efficient refrigerant: Uses modern R-32 refrigerant with an EER of 10.7 to reduce operating costs while maintaining reliable cooling performance.
• Through-the-wall design: Built for a wall-mounted installation with dimensions of 24 W x 20.1 D x 14.4 H, which frees up window space and provides a neat permanent fit.
• Custom comfort controls: Offers 3 cooling and 3 fan speeds plus 4-way air deflection to direct airflow where it is needed for faster, more even comfort.
• Remote and timer: Includes a remote control and a 24-hour timer so settings can be scheduled and adjusted from across the room for convenience.
• Energy saver and auto restart: Energy Saver mode circulates air while cycling the compressor to save energy, and Auto Restart returns the unit to prior settings after a power outage.
• Included accessories: Comes with a snap-together trim kit, outdoor mesh grille, washable reusable filter, insulation foam, and a remote for an all-in-one installation.

Who It's For

This LG wall unit is ideal for someone who needs reliable, fixed cooling for a bedroom, small living area, or a home office up to about 330 sq. ft. It's a good fit for renters in more permanent units or homeowners who prefer not to block windows and want a tidy wall-mounted look.

It is not the best choice if you need a portable solution, a window-only setup, or cooling for larger open-plan spaces above 330 sq. ft. Buyers seeking whisper-quiet commercial-grade performance or advanced smart home integration should look elsewhere.

Pros & Cons

Pros

• Efficient R-32 refrigerant and a solid EER for lower running costs.
• Multiple fan and cooling speeds with 4-way deflection create even, customizable airflow.
• Includes remote, washable filter, and trim kit for a cleaner install and easier maintenance.

Cons

• Through-the-wall installation requires a proper sleeve and is not suitable for window-only setups; installation difficulty varies by wall construction.
• Customers report mixed impressions of noise and build quality, so expectations for quiet operation should be cautious.

Specifications

Our Verdict

The LG 7,800 BTU through-the-wall air conditioner is a practical, value-focused option for cooling rooms up to 330 sq. ft.; it balances energy efficiency, straightforward controls, and a tidy wall-mounted appearance. Choose this unit if you want reliable cooling and energy savings in a permanent wall installation, but be prepared for installation work and variable noise perceptions.

Frequently Asked Questions

Can this unit be used in a window?
No. This model is designed for through-the-wall installation and is not properly vented or suited for a standard window installation.

What is covered in the box?
The unit ships with a snap-together plastic trim kit, outdoor mesh grille, washable reusable filter, insulation foam, and a remote control.

Will it restart after a power outage?
Yes. The unit includes an Auto Restart feature that returns it to prior settings when power is restored.