Wall Air Conditioners

Why Choose a Through-the-Wall Air Conditioner

A through-the-wall air conditioner, also known as a wall-mounted air conditioner, is a cooling system installed directly into a wall opening. This creates a clean, built-in look that blends with your home or office décor without taking up floor space.

These units are designed to cool specific rooms or areas, making them ideal for targeted temperature control. Because they are fixed in place, wall mounted air conditioners provide consistent performance and are often more energy-efficient than portable units. They are a popular choice for cottages, offices and apartments where reliable, quiet cooling is important.

Benefits of a Through-the-Wall Air Conditioner

• Space-saving Design: Since a through-the-wall air conditioner is built into the wall, it frees up floor space and avoids the clutter of portable units.
• Energy Efficiency: Many models include high SEER (Seasonal Energy Efficiency Ratio) ratings, programmable timers, and eco modes to reduce electricity use.
• Improved air quality: Many through-the-wall air conditioner models have built-in air filters to remove dust, allergens, and other particles.
• Permanent Installation:  Provides a stable, secure cooling solution that doesn’t need seasonal removal.
• Durability and Materials: These units are designed to sit within a heavy-duty wall sleeve air conditioner housing. This metal sleeve protects the unit from the Canadian elements and simplifies future replacements.
• Enhanced Security: A permanent installation is much harder to tamper with from the outside, providing peace of mind that a window-seated unit cannot offer.

Wall Mounted AC Installation Considerations

• Installation requirements - Some through-the-wall air conditioners may require professional installation, especially if a wall sleeve or electrical work is needed.
• Measure the wall opening before purchase to ensure the unit fits properly.
• Install the outdoor vent of the unit in a location with good airflow, away from direct sunlight and obstructions.
• Use a proper wall sleeve to protect the unit and maintain efficiency.
• Make sure your wall can support the unit’s weight.

If you’re unsure how to install it or want some help, consider having a Pro install it for you.

Through-the-Wall Air Conditioner Maintenance Tips

• Clean or replace the air filter regularly to keep airflow strong and air quality high.
• Check the exterior vent for blockages, such as leaves or debris.
• Schedule routine inspections to maintain performance and efficiency.

Find the right cooling solution for your space at The Home Depot Canada. Shop online or visit your local store to compare models, explore features, and get expert advice to help you choose the best unit for your home.

Frequently Asked Questions

How much does it cost to install an air conditioner?

Check out our Air Conditioner Cost Guide for pricing information specific to wall-mounted AC installation costs in Canada.

What is the difference between a through-the-wall air conditioner and a window unit?

A through-the-wall unit is installed through a wall and is permanent, while a window unit is placed in a window and can be removed seasonally. Many Canadians use wall-mounted ACs in cottages since they’re easier to install in a wood-framed exterior wall.

Can I install a wall-hung air conditioner myself?

While it is a manageable DIY task for those comfortable with basic framing, many Canadians opt for professional installation to ensure a weather-tight seal against our harsh winters, especially if a wall sleeve or electrical modifications are needed. Have a Pro install yours if you need.

Are through-the-wall air conditioners energy-efficient?

Yes, many have high SEER ratings and energy-saving features. Choosing the right size for your space is key to efficiency.

Are through-the-wall air conditioner units able to provide heat as well?

Yes, some units are able to provide heat.

Can I use a window AC in a through-the-wall installation? No, you should avoid this. A standard window unit vents through side louvres, which would be blocked by a wall. A dedicated through-the-wall air conditioner vents through the rear, ensuring the compressor doesn’t overheat.

How do I measure for a wall-hung air conditioner? You should measure the interior width, height, and depth of your existing wall sleeve. If you are starting from scratch, choose your wall air conditioning unit first, and then frame the wall opening according to the manufacturer’s specific sleeve requirements.

Where should I avoid installing a wall AC?

To ensure your through-the-wall air conditioner runs efficiently, avoid placing it in direct sunlight on south-facing walls, near heat sources like ovens, or behind obstructions like curtains and furniture. Never install a wall-mounted air conditioner directly above electronics or in narrow hallways, as this can lead to water damage and poor air circulation throughout your home.