What sealant should be used when installing a wall-mounted air conditioner?

Are you planning to install a wall-mounted air conditioner in your home so you can enjoy a bit of coolness during the summer heat? When installing your air conditioner, it is recommended to seal the perimeter with a sealant.

Sealing the narrow openings around the unit will prevent the hot air outside from entering your home and the cool air generated by the air conditioner from escaping.

Find out which sealants are best suited for the job.

Different sealants can be used to caulk around a wall-mounted air conditioner

There are various sealing products available on the Canadian market that can be used when installing your air conditioner. Your choice should be based on both your needs and the properties of the sealant.

Neutral silicone adhesive sealant

Silicone-based adhesive sealants are ideal for sealing the interior and exterior edges of air conditioning systems, as well as doors and windows. Their UV resistance and ability to remain flexible regardless of temperature make them very effective for this application.

In addition, these sealants can be used on materials such as aluminum, glass, masonry, certain plastics, painted or unpainted metals and many other surfaces. These sealants will easily adhere to the edges of your air conditioner, no matter what materials were used in the construction of your home.

However, you should note that silicone-based sealants are not paintable. But don’t worry, they are available in a wide variety of colours. You can easily find a product that will match the colour of your decor.

Hybrid adhesive sealant

Much like silicone-based adhesive sealants, hybrid adhesive sealants also share the most important properties for effectively sealing around an air conditioner during installation.

They remain flexible and stable in a temperature range from -40°C to 100°C and do not age prematurely when exposed to UV light. In addition, these caulking products are non-corrosive and will not cause your air conditioner to rust.

Easily applied with a caulking gun, you’ll have no problem making durable and visually pleasing joints on most surfaces if you work when the temperature is between -17°C and 40°C.

Finally, a major advantage of hybrid sealants is that they can be painted. You can achieve a very high level of finish by painting your joints once they have dried properly.

Seal your new air conditioner with an Adfast product

In short, you have every reason to caulk the edges of your new wall-mounted air conditioner with a silicone or hybrid adhesive sealant when installing it. Your air conditioning system will be more efficient while consuming less energy. You may even find that it’s less noisy.

For a hassle-free application and a long-lasting result, why not use sealants trusted by HVAC professionals? Choose your sealant from Adfast’s Adseal range!

Contact us if you have any questions about an Adfast product!