Choosing the best indoor air conditioner cover combines functionality with style, protecting your AC unit during the off-season while complementing your home decor. These covers help prevent dust, debris, and moisture from damaging your unit, and many feature double insulation to improve energy efficiency by blocking drafts. Below is a comparison table of top-rated, decorative, and insulated indoor AC covers that fit various window unit sizes, offering protection and aesthetic appeal.
| Product | Brand | Key Feature | Size (LxHxD inches) |
|---|---|---|---|
| Fall Flower Indoor AC Cover | Falaniique | Waterproof, double insulation, adjustable drawstrings | 25 x 18 x 3.5 |
| Leaves Plants Indoor AC Cover | Falaniique | Double insulation, adjustable, waterproof | 28 x 20 x 3.5 |
| Dear Forest Indoor AC Cover | Falaniique | Compact size, double layer insulation, adjustable fit | 17 x 13 x 3.5 |
| Frost King Quilted Indoor Air Conditioner Cover | Frost King | Plastic lining stops draft, machine washable fabric | Fits up to 20 x 28 |
| RUNZEG Adjustable Indoor AC Cover | RUNZEG | Double insulation, adjustable straps, anti-rust | 21 x 15 x 3.5 |
Content Navigation
- Fall Flower Indoor Air Conditioner Cover For Window Units
- Leaves Plants Indoor Air Conditioner Cover For Window Units
- Falaniique Dear Forest Indoor Air Conditioner Cover
- Frost King 2-Piece Quilted Indoor Air Conditioner Cover
- RUNZEG Indoor Air Conditioner Cover With Adjustable Straps
- Buying Guide For Indoor Decorative Air Conditioner Covers
Fall Flower Indoor Air Conditioner Cover For Window Units

This Fall Flower Indoor Air Conditioner Cover by Falaniique features a beautiful watercolor floral and herb pattern in blue and brown hues. It is designed with double insulation to protect your window air conditioner from moisture, dust, and debris, while allowing airflow through its vents. The waterproof polyester fabric prevents rust and mold buildup, extending the life of your AC unit.
The cover measures 25″ L x 18″ H x 3.5″ D and perfectly fits units sized between 23-25″ in length, 16-18″ in height, and 3.5″ deep. It includes two adjustable drawstrings to achieve a snug fit and side power holes for easy cable management, making installation tool-free and hassle-free.
Leaves Plants Indoor Air Conditioner Cover For Window Units

The Leaves Plants Indoor AC Cover offers a decorative botanical design with wildflower prints in blue and green tones by Falaniique. Constructed of durable polyester fabric with diamond stitching, it features a double layer of insulation that protects your unit from drafts and moisture.
With dimensions of 28″ L x 20″ H x 3.5″ D, this cover fits larger window units measuring 26-28″ in length and 18-20″ in height. It is equipped with adjustable drawstrings for a tight seal and side openings for power cords, preserving the efficient function of your air conditioner while shielding it from dust and damage.
Falaniique Dear Forest Indoor Air Conditioner Cover

Designed for smaller window units, the Dear Forest Indoor Air Conditioner Cover fits units sized 15-17″ L x 11-13″ H x 3.5″ D. This waterproof cover features a forest-inspired pattern and double insulation pads for protecting the unit against winter cold, wind, and dust.
Like other Falaniique covers, it provides adjustable drawstrings for a customized fit and convenient side power cord holes. The water-resistant polyester fabric with reinforced sewing ensures durability and helps extend your AC unit’s lifespan.
Frost King 2-Piece Quilted Indoor Air Conditioner Cover

The Frost King 2-Piece Quilted Indoor Air Conditioner Cover offers a large protective solution for units up to 20″ x 28″. It combines a plastic liner to stop drafts with a machine washable decorative fabric cover for easy maintenance. Its quilted design adds aesthetic appeal while sealing out dust and moisture.
Though simpler in decoration compared to Falaniique covers, this set focuses on functional protection and energy saving by preventing heat loss during colder months.
RUNZEG Indoor Air Conditioner Cover With Adjustable Straps

The RUNZEG Indoor AC Cover combines practicality with energy efficiency, featuring double insulation that blocks warm air leakage and prevents cold drafts. It fits most window AC units sized 21″ L x 15″ H x 3.5″ D, suitable for 5000 to 7000 BTU units.
Equipped with adjustable straps and elastic cords, this cover ensures a snug and secure fit, reducing heat loss during winter and protecting the unit from rust. Its lightweight but durable design simplifies installation and removal.
Buying Guide For Indoor Decorative Air Conditioner Covers
When selecting an indoor air conditioner cover, consider these key factors to protect your equipment effectively while enhancing your indoor decor:
Size And Fit
Measure your air conditioner unit’s length, height, and depth to ensure the cover will fit snugly. Adjustable features like drawstrings or straps are beneficial for achieving a tight fit and preventing dust entry.
Material Quality And Insulation
Double insulation is important as it helps reduce heat loss during winter and keeps drafts from entering your room, saving on heating costs. Look for durable polyester or polyester/cotton blends with reinforced stitching and a waterproof exterior.
Design And Aesthetic Appeal
Since the cover is visible indoors, decorative patterns such as floral, botanical, or quilted designs can enhance your space’s ambiance. Choose colors and styles that complement your existing decor for a seamless look.
Ease Of Use And Maintenance
Easy installation features like elastic straps and drawstrings allow quick placement and removal without tools. Machine washable or easy-to-clean fabrics simplify upkeep, making the cover practical long-term.
Additional Functional Features
- Power Cord Openings: Side openings allow cords to pass through without compromising protection.
- Breathability: Covers should allow air circulation to prevent moisture buildup and mold.
- Multi-Piece Sets: Some covers come in sets for larger window units or multiple ACs.
Choosing a quality indoor air conditioner cover that balances protection, style, and insulation will help preserve your investment and maintain a comfortable home environment year-round.