Winter can be harsh on your through the wall and window air conditioning units, allowing cold drafts and snow to enter your home while also exposing your system to weather damage. Protecting your air conditioner with a high-quality cover can help prevent heat loss and weather-related wear without the hassle of removal. Below is a summary table of the best winter air conditioner covers designed for through-the-wall and window units to keep your home insulated and energy-efficient during the cold months.
| Product | Brand | Type | Key Feature | Amazon Link |
|---|---|---|---|---|
| J&C Indoor AC Cover for Wall Units & Window Units | J&C | Indoor | Dustproof & Windproof with drawstring fit | View on Amazon |
| Outside Insulated Window Air Conditioner Cover (21x15x16) | i frmmy | Outdoor | Triple-layer waterproof & insulated | View on Amazon |
| JEACENT Indoor Air Conditioner Cover Double Insulation | JEACENT | Indoor | Fits 3000-7000 BTU units, prevents cold drafts | View on Amazon |
| UNUN Window Air Conditioner Covers for Outside | UNUN | Outdoor | Heavy-duty waterproof with adjustable straps | View on Amazon |
| Winter Window AC Cover Waterproof for Outside Unit | Luxiv | Outdoor | 3-layer waterproof insulation with double straps | View on Amazon |
J&C Indoor AC Cover for Wall Units & Window Units – Winter Protection
The J&C Indoor AC Cover delivers excellent winter protection for both wall and window air conditioners inside your home. Its windproof design helps prevent cold air infiltration through the indoor AC, thus reducing heat loss and energy waste. Equipped with a drawstring and elastic hem, the cover ensures a customized, snug fit. It also features a convenient hole for electric cables which simplifies installation without the need to remove your unit. Additionally, this cover blocks dust from entering your home during the offseason, keeping your air conditioner clean.
Outside Insulated Window Air Conditioner Cover by i frmmy
The i frmmy Outside Insulated Cover offers robust protection for outdoor window units. Its triple-layer construction includes a waterproof black outer layer, an aluminum foil mid-layer that reflects heat, and an insulating pearl cotton inner layer. This superior build guards against harsh weather, prevents cold air from entering the home, and keeps warmth inside. Adjustable metal buckle straps secure the cover firmly to the AC unit, offering resistance against strong winds and potential damage during winter.
JEACENT Indoor Air Conditioner Cover Double Insulation Small
The JEACENT Indoor Cover is tailored for smaller units ranging from 3,000 to 7,000 BTU. Designed to fit window-mounted AC units indoors, it effectively blocks cold air drafts that commonly seep through during winter months. This cover aids in heating cost reduction by creating an insulating barrier and eliminates the inconvenience of removing and reinstalling your AC unit seasonally. With dimensions suited to smaller systems, this product provides targeted winter protection.
UNUN Window Air Conditioner Covers for Outside Units
The UNUN Outdoor AC Cover provides full coverage for the exterior of window air conditioning units, including the bottom. Made from heavy-duty 600D Oxford fabric and equipped with a waterproof inner layer, this cover is UV stabilized to withstand rain, snow, and dirt. Adjustable double straps with buckles keep the cover tightly secured to the AC unit without requiring removal. It fits units measuring up to 25.5 inches wide, offering comprehensive protection during harsh winter conditions.
Winter Window AC Cover Waterproof for Outside Unit by Luxiv
The Luxiv Winter Window AC Cover combines waterproofing and insulation through its three-layer composition: a 420D waterproof Oxford cloth top layer, antifreeze insulation pearl cotton middle layer, and an antifreeze aluminum foil inner layer. This combination fully shields outdoor units from rain, snow, and wind. The cover features two adjustable straps with snap buckles to prevent wind displacement and enable quick installation and removal. High-temperature bonded stitching ensures the cover remains waterproof and windproof for the entire winter season.
Buying Guide for Through The Wall Air Conditioner Covers
Indoor vs Outdoor Covers
Indoor air conditioner covers protect against drafts, dust, and heat loss inside your home. They usually fit snugly over the unit and may have elastic hems or drawstrings for a custom fit. Outdoor covers must be waterproof, durable, and resistant to UV rays along with insulating material to protect against snow, wind, and rain.
Material and Insulation
The best covers feature multiple layers combining waterproof outer fabrics with reflective and insulating cores (such as aluminum foil and pearl cotton) to block moisture and retain warmth. Heavy-duty oxford fabric or polyester are commonly used outer layers for durability.
Size and Fit
Accurate measurement of your AC unit before purchasing is critical. Covers come in varied sizes, so select one that matches your unit’s dimensions to ensure no gaps allow cold air or snow infiltration. Adjustable straps, drawstrings, or elastic hems help secure an optimal fit.
Ease of Installation and Removal
Look for covers designed for easy on/off application without removing the air conditioner. Features like cable holes or adjustable straps facilitate installation. Quick removal is convenient when transitioning back to cooling season.
Energy Efficiency
By preventing cold drafts and heat leakage through the air conditioner during winter, quality covers can reduce heating costs. Insulated covers with reflective layers contribute to maintaining a comfortable indoor temperature.
Durability and Weather Protection
Choose covers with UV resistance and waterproof inner and outer layers to withstand winter weather while preserving the lifespan of your AC unit. Look for reinforced stitching or high-temperature bonding for enhanced durability.