A window sealing kit that improves portable air conditioner performance by stopping warm outside air re-entering and keeping insects and rain out. LYUNIT AC Window Seal delivers a neater venting solution and greater comfort during hot spells. Is fitting a simple seal the best way to speed up cooling and cut energy use?
⚡ At a Glance
- • Sealing Performance: Full-perimeter seal fits up to 560 cm, using durable, UV-resistant fabric and reinforced zips to reduce drafts and warm-air return.
- • Best for: Owners of portable air conditioners who want quicker cooling and fewer draughts around window vents
- • Not ideal for: Homes with fixed window air conditioners or windows with a perimeter larger than 560 cm
Universal fit for portable ACs, dehumidifiers and tumble dryers, using heavy-duty zips and supplied adhesive tape. Durable, UV-resistant material keeps a reliable barrier against outside air and pests.
Faster cooling and steadier room temperatures – Thanks to the full perimeter seal
Supplied adhesive tape secures fabric to the window frame while the seal wraps around the exhaust hose to create a continuous barrier that limits warm-air ingress. Reinforced seams and a snug fit maintain the seal under normal operation.
Rooms reach the set temperature more quickly and maintain it for longer, reducing run time of portable units and improving comfort.
Lower energy use and reduced emissions – With minimised air exchange
A tighter barrier reduces the amount of warm outside air returning through the window gap, so cooling cycles become shorter and less frequent. That lower workload directly reduces electricity consumption during hot periods.
Energy consumption drops as the air conditioner spends less time battling incoming heat, delivering practical savings and a smaller environmental impact over the season.
Secure hose attachment and easy access – With heavy-duty zipper and no-drill installation
Extra-strong zips prevent accidental opening when a hose is connected, while included support attachments and adhesive velcro tape fix the seal without drilling. Zippered access allows the window to be opened without removing the seal entirely.
Hose stays firmly in place during use, and airing or quick access is possible without dismantling the setup, making maintenance and everyday use straightforward.
✨ The 4 Key Reasons for LYUNIT AC Window Seal
- Universal 560 cm perimeter fit – Ensures compatibility with most portable ACs and dryers quickly
- UV-resistant durable fabric – Maintains shape and resists sun damage for long-term use
- Heavy-duty zipper closure – Keeps exhaust hose secure, preventing accidental unzipping during operation
- No-drill installation with adhesive tape – Fits without tools, so set-up can be completed in minutes
📋 Technical Details at a Glance
- Category: Home, window seal for portable air conditioners
- Fit perimeter: Up to 560 cm maximum perimeter
- Material: Durable, UV-resistant fabric
- Compatibility: Portable air conditioners, dehumidifiers, tumble dryers with flexible exhaust hoses
- Closure: Heavy-duty zipper with extra strong zips
❓ Frequently Asked Questions
Q: Will the seal fit my window?
A: Measure the window perimeter, the seal fits openings with a maximum perimeter of 560 cm. Ensure the exhaust hose can reach the window position before fitting.
Q: Can it be used with a tumble dryer or dehumidifier?
A: Yes, compatible with dehumidifiers and tumble dryers that use a flexible exhaust hose, as well as all portable air conditioners.
Q: Do I need to drill or use tools to install it?
A: No drilling is required, the supplied adhesive velcro tape and support attachments secure the seal to the window frame, and the zipper allows access without removing the seal.
🏆 Our Verdict
Ideal for households using portable air conditioners or vented dryers that need quicker cooling and fewer draughts. Durable, UV-resistant fabric combined with reinforced zips and no-drill installation creates a reliable, low-effort seal. A modest one-off purchase that can repay over time through energy savings and reduced strain on cooling appliances.
