Energy performance

Performance and adherence to standards at all times

We meet or exceed the standards set by these organizations:

  • Natural Resources Canada
  • CSA Group
  • National Fenestration Rating Council (NFRC)
  • North American Fenestration Standard (NAFS)

All of our products undergo rigorous testing

We are serious about offering you products that can handle the rigours of our climate. We constantly test our products and improve our practices, we and never leave anything to chance, just so we can hear you say:  “Isothermic is the best decision I’ve ever made.”

Windows tested

Quality installation = energy performance

Professional installation is critical to optimal energy performance. Proper installation ensures that doors and windows are sealed and efficient, preventing thermal bridging and uncontrolled air infiltration.

Isothermic’s integrated approach, which combines top-quality raw materials, efficient glazing, and certified installation, is key to building better homes.

Additional sources of information

Video: Energy efficiency and window performance (RBQ, in French)  (8:41)

Video: ENERGY STAR-certified windows and doors (Hydro-Quebec, in French) (1:16)

Video: ENERGY STAR Day, 8th Edition (in French)(0:42)

Natural Resources Canada: Choosing energy-efficient windows in four easy steps