The best insulating window frame with an extremely low U-window value. Plastic window frame supplier Select Windows introduces the Energy Frame that 40% better insulates compared to the current generation of plastic frames, windows, doors and sliding doors. Therefore, this new window frame fits the trend of sustainable renovation and energy efficient living.
The biggest energy leak in a home is window frames and glass. That is where most heat is lost, even if the walls are old and "poorly" insulated. A wall insulates better than the best window frame and insulation glass. There is still much to be gained for the Dutch homeowner.
The Select Windows Energy Frame is constructed from the new generation of Schüco LivIng frame profiles and it is combined with triple glazing. Schüco LivIng is a 120 millimeter deep frame profile. The deeper the profile, the more space for the insulating effect and the thicker the glass that fits inside.
Because Select Windows Energy Frames for windows, doors and sliding doors insulate so well, they may be called passive frames. This is because the U-window value is lower than 0.9. Houses with a low U-window value are sustainable, future-proof and value-retaining and provide a healthy and comfortable indoor climate. It makes a huge difference for the environment and energy bills whether the U-window value is 4.7 (wooden window frames with single glazing) or 0.88 (Select Windows Energy Frame).
How well a window frame with a particular type of glass insulates can be seen by its U-window value. The U-window value (heat transfer coefficient) has three parts:
Ug - value glass | Uf - value frame/frame | PSI value (Ψ)
Uvalue spacer glass |
Your - U-window value * | |
Wood with single glazing | 5.8 | 2.4 | 0.081 | 4.7 W/m2K |
Wood with double glazing | 2.8 | 2.4 | 0.081 | 2.8 W/m2K |
Dutch accent with HR++ glass | 1.1 | 1.4 | 0.077 | 1.4 W/m2K |
Dutch Facet or Dutch Block with HR++ glass | 1.1 | 1.1 | 0.038 | 1.31 W/m2K |
Select Windows Energy Frame:
Dutch Facet or Dutch Block with triple glazing |
0.6 | 1.1 | 0.038 | 0.88 W/m2K |
*Heat transfer coefficient (Uw) calculated according to DIN EN 10077-1
*Based on a 1.23 x 1.48 meter plastic frame with pivot section |
With Select Windows, the residential consumer has many choices regarding the final window frame. There is a choice in the appearance of the window frame (Dutch Block or Dutch Facet), the color (150 varieties including trend colors such as black and anthracite) and the texture (lifelike wood grain, matte, metallic).
Select Windows has a nationwide network of showrooms where residential consumers can obtain information and have an Energy Frame calculation done.