top of page


passive house Net zero and beyond

Our Passive House windows and doors deliver superior performance and are designed specifically to meet the most  rigorous building standards.

The strategy of a Passive House is to reuse "free" heat to heat the home. "Free" heat is generated from all electrical and gas appliances such ovens, refrigerators, computers and light bulbs. Passive house directs heat through a recovery ventilator, and transfers the heat, to the incoming fresh air, before it leaves the building.

a Net Zero home will make as much, or more, heat than it consumes.


R-value is the measure of thermal resistance in an insulating material. In other words, the R-value of a window demonstrates the window’s capacity to resist heat flow from one side to the other. A higher R-value means greater resistance to heat conduction through the window, and thus the greater thermal



The better a window’s ability to insulate from the ceaseless fluctuations of weather outside, the more comfortable the interior environment will be throughout the year.

energy efficiency

Energy efficient windows can decrease your energy costs while increasing your home’s overall value and your quality of living.  here are 5 things that make windows efficient

1. Quality frame materials

Durable, low-maintenance framing materials reduce heat transfer and help insulate better. 

2. Multiple panes

Two panes of glass, with an air or gas-filled space, insulate much better than a single pane of glass. they also offer more impact resistance and sound insulation. 

3. Low-E glass

Special coatings reflect infrared light, keeping heat inside during winter and outside during summer. They also reflect damaging ultraviolet light, which helps protect interior furnishings from fading.

4. Gas fills

Some energy-efficient windows have argon, krypton, or other gases between the panes. These odourless, colourless, non-toxic gases insulate better than regular air.

5. Warm edge spacers

A spacer keeps a window’s glass panes the correct distance apart. Non-metallic and metal/non-metal hybrid spacers also insulate pane edges, reducing heat transfer through the window.

quality installation

Quality installation ultimately boils down to the experience of those doing the work. At Festertek we have over 10 years of experience in the industry. We insure that windows and doors are properly fit, installed and insulated so that you can rest assured that your systems will last you a lifetime

bottom of page