Best Inside Air Conditioner Covers to Save Energy and Protect Your Unit 2025

Inside Air Conditioner Covers to Save Energy and Protect Your Unit
This website participates in the Amazon affiliate program, and we may receive a small commission for purchases made via the links or ads you click on here.

Choosing the right inside air conditioner cover can help you improve energy efficiency, prevent dust buildup, and protect your AC unit during off-seasons. Below is a summary table featuring the top 5 indoor air conditioner covers designed for various window AC sizes and insulation needs.

Product Brand Size (LxHxD) Special Features
Indoor AC Cover with Drawstring BEWAVE 21″ x 15″ x 3.5″ Double insulation, energy saving, washable
AC Cover with Elastic Strap Homydom 16″ x 13″ x 3.5″ Fits 3,000-5,000 BTU units, stops drafts
Double Insulation Air Conditioner Cover Orizizhic 21″ x 13″ x 3.5″ Energy saving, noise reduction, soft cotton fabric
Indoor Air Conditioner Unit Cover KylinLucky 17″ x 13″ x 3″ Elastic strip, windproof, dust protection
Breeze Stop Surround Insulation Panels Breeze Stop Fits up to 36″ window width 1″ thick foam, vinyl coating, customizable size

BEWAVE Indoor Air Conditioner Cover with Drawstring

BEWAVE Indoor Air Conditioner Cover

Check Price on Amazon

The BEWAVE Indoor Air Conditioner Cover offers double insulation designed to block cold air drafts and prevent warm air leaks from your AC unit, improving energy efficiency effectively. Made from durable 210D polyester and cotton, this gray cover resists dust and protects your unit from wind, rain, and snow while indoors.

Installation is simple with an adjustable drawstring on one side and an extra free drawstring for a snug fit. The cover is reusable and machine washable, making maintenance easy. Its size of 21″ x 15″ x 3.5″ fits many common window air conditioners, ideal for the winter months when your AC unit is not in use.

Homydom AC Cover with Elastic Strap

Homydom Indoor Air Conditioner Cover

Check Price on Amazon

The Homydom Indoor Air Conditioner Cover is designed to fit window AC units sized 14-16″ long, 11-13″ high, and 3.5″ deep, typically suited for 3,000 to 5,000 BTU units. Its elastic design allows for high flexibility and easy installation.

This cover helps stop cold air drafts, effectively reducing heating costs during winter without the need to remove or reinstall the AC unit annually. Its light yellow color offers a unique aesthetic while maintaining functionality. Its durable material ensures long-lasting use, making it a reliable choice for indoor AC protection.

Orizizhic Double Insulation Air Conditioner Cover

Orizizhic Indoor Air Conditioner Cover

Check Price on Amazon

The Orizizhic Indoor Air Conditioner Cover measures 21 x 13 x 3.5 inches, fitting most 3,000 to 7,000 BTU window AC units. It features double insulation to prevent warm air leakage and reduce heat loss when the AC is in use, which helps lower energy consumption.

Made with soft, breathable, and fast-drying cotton fabric, this cover is comfortable to the touch and easy to clean. Additionally, its insulation helps absorb noise for a quieter indoor environment. This product is designed to last long while offering effective protection against dust and drafts.

KylinLucky Indoor Air Conditioner Unit Cover

KylinLucky Indoor Air Conditioner Cover

Check Price on Amazon

The KylinLucky Unit Cover fits indoor AC units within the size range of 15″ to 17″ length, 11″ to 13″ height, and 3″ depth. Composed of durable 210D polyester and cotton, it effectively blocks wind, dust, and cold air drafts.

Installation is tool-free with an elastic strip sewn around the cover, allowing it to slip on snugly over the air conditioner. Its lightweight design ensures easy storage when not in use, offering reliable protection during the colder months to extend your AC unit’s life.

Breeze Stop Surround Insulation Side Panels

Breeze Stop Insulation Panels for AC

Check Price on Amazon

The Breeze Stop Surround Insulation Panels provide window insulation for air conditioner units rather than a direct cover. Made from 1-inch thick insulating foam covered with flexible white vinyl, these panels fit windows up to 36 inches wide.

They are designed to be cut to the needed size and provide effective sealing around window AC grills, covering plastic pull-out sides that come with many units. While not a full cover, these panels enhance insulation around the unit and can reduce drafts and heat loss during winter.

Buying Guide for Inside Air Conditioner Covers

Size and Fit

Measure your window air conditioner’s length, height, and depth precisely before purchasing an indoor cover. Covers come in varying sizes tailored to different BTU ratings and unit dimensions. A well-fitting cover ensures maximum insulation and protection without gaps where drafts can seep through.

Insulation Quality

Double-layer insulation is preferred for better energy saving and cold draft prevention. Look for covers with polyester/cotton blends or insulating foam materials. Cotton fabric covers offer breathability and softness, while foam panels provide thick insulation.

Installation and Adjustability

Cover designs vary from elastic straps, drawstrings, to adjustable buckles. Easy installation without tools is ideal, especially if frequent removal or repositioning is needed. Adjustable features ensure a snug fit to prevent air leaks.

Durability and Maintenance

Covers made of machine-washable materials offer ease of maintenance. Polyester and cotton blends provide durability and long service life. Waterproof or water-resistant properties are important if the cover might face moisture exposure indoors.

Energy Efficiency and Noise Reduction

A good indoor AC cover stops cold air drafts and warm air leakage, leading to reduced energy consumption and heating costs in winter. Some covers also help to reduce noise from the unit, enhancing indoor comfort.

Additional Features

Consider covers with cable passthrough holes and aesthetic designs if the unit remains installed year-round. Some covers come in light colors or stylish fabrics that blend into home interiors.

Scroll to Top