Doors and windows can be responsible for a significant portion of a home's total heat loss.
Up to 35% according to Natural Resources Canada
Up to 25% according to Écohabitation (Available in French only)
Up to 41% for a single-family home with aluminum windows
(Energy assessment carried out in 2024 in the Laurentians, J0R 1B0)
Brief description of the detached house
Year of construction 1996.
Heated floor area 212 m2, 2283 square feet.
– 20 Aluminum windows, double glazing
– 2 Energystar doors
– 1 8-foot aluminum-framed patio door
The annual electricity bill for this house is estimated at $3,900.
In addition to the living area, there is:
– a heated 20 x 30-foot garage,
– a 21-foot heated above-ground pool,
– a heat pump/air conditioning and heating system.
The Energuide rating
On the Energuide scale, the lower the number, the better the energy efficiency of a house.
This table from the Energuide report shows the energy saving potential of the house and recommends improvements.
Energy-saving potential
** One gigajoule corresponds to two propane cylinders for the barbecue.
Replacing windows can improve aesthetics, reduce outside noise, reduce maintenance, increase the resale value of the property, improve comfort and reduce condensation in cold weather. ENERGY STAR certified windows, picture windows and skylights are among the most efficient on the market.
Choosing the right window frames
PVC Frame
Indoor and outdoor
Thermal performance +++
Maintenance & Lifespan ++
Cost $
Hybrid Frame
PVC interior and
Aluminum exterior
Thermal performance +++
Maintenance & Lifespan +++
Cost $$
Aluminum Frame
Thermal performance +
Maintenance & Lifespan +++
Cost $$$
* 3D illustrations provided for information purposes only.
Choose a CONCERTO retailer to assist you with your door and window replacement project.