How Attic Insulation Helps with AC Efficiency

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Attic insulation does much more than keep your home warm in winter. But because it’s out-of-sight, we rarely appreciate the cumulative benefits. When it’s performing at peak, attic insulation dramatically enhances home energy efficiency, including the overall efficiency of your air conditioning system.

In summer, an energy-efficient home allows the AC system to run at less frequent intervals, and without the inclination to flick on and off all day long. Simply put, the better the insulation in the attic, the better the energy efficiency – and that means less energy consumption to create a comfortable home environment and therefore lower energy bills.

Choosing the right type of attic insulation product

There are a variety of insulation products suited for the attic, but it’s key to choose the right installation for your home’s requirements. It’s also important to have the installation work done by a professional, mainly because there’s much more to do than just install insulation.

Fibreglass Batt Insulation

One of the more popular installations, fibreglass batts will provide satisfactory R-Values and good long-term results. Professional installation is cost effective; however, fibreglass batts require supplementary air sealing and proper ventilation. This means that along with the insulation materials, an air barrier and vapour barrier must be installed independently.

Blown In Insulation

In the attic and roof cavity, blown in insulation has proven to be effective, with a number of benefits. This product is available in fiberglass or cellulose, although cellulose is known for having slightly higher R-Values. With this installation, an air barrier and vapour barrier must be additionally installed to ensure maximum performance for the installed insulation.

Spray Foam Insulation

Today, many insulation contractors are opting for spray foam insulation when insulating the attic and roof cavity. Spray foam does it all – one installation provides an insulation barrier, air barrier, and vapour barrier combined. Because of the cost, spray foam is a long-term investment. No other product can provide a comparable level of energy efficiency.

A well-insulated attic can help AC system efficiency

When your attic is well insulated, your HVAC system (heating and cooling) operates more efficiently. In summer, cool indoor air will not escape through the roof, and warm outdoor air will not intrude. Insulating the attic simply prevents air leakage – and that ensures your AC unit doesn’t have to work as hard to maintain a comfortable temperature in your home. More than that, an efficient HVAC system (summer and winter) will result in less energy consumption and lower energy bills during the year.

For the best attic insulation in Toronto count on Great Northern Insulation       

In Toronto, and throughout southern Ontario, Great Northern Insulation offers home insulation solutions from attic to basement. Our dedicated team of professionals helps you to choose the right product for the job, and the right installation for the space.

From our product warranties, to our customer satisfaction guarantee, we don’t compromise on our quality approach to home insulation. We make every effort to do it right – with high quality products, timely project scheduling, and fully guaranteed installations.

Find out more about our home insulation products and services by calling one our in-house experts at 1-888-778-9591 or visiting our company website at



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