When it comes to Energy efficiency – uPVC is a clear winner!

The thermal efficiency of windows is measured using a ‘U’ value. The lower the ‘U’ value, the less heat is permitted to pass through the window and the more efficient the window is. When it comes to ‘U’ values –  lowest is best!

An average home will lose 30% of its heating or cooling energy through its windows and doors.  A glance at the table on the right shows that our top performing New Look Collection window would reduce those losses by 75% compared to a standard aluminium window! That’s a 22.5% reduction in your heating and cooling costs.

With carbon emissions high on the global agenda and the ever increasing cost of electricity, we are all looking for ways to make our homes more energy efficient. Choosing energy efficient windows from the New Look Collection would be a big step in the right direction.

What do energy efficient windows mean to me?
  • Lower energy bills
  • Less Energy Used - So Less Carbon Dioxide Produced
  • Less Noise Pollution
  • A Warmer Home in Winter, a cooler home in summer
Window Type Glazing Type Window ‘U’ Value
New Look Collection REHAU Tritec 24mm Double Glazing with Low E glass 2.0 W/m²/K
New Look Collection REHAU Tritec 24mm Double Glazing  without Low E glass 2.7 W/m²/K
New Look Collection REHAU TRITEC 4mm Single Glazing 4.8 W/m²/K
Standard wooden window 4mm Single Glazing 5.6 W/m²/K
Standard steel window 4mm Single Glazing 7.9 W/m²/K
Standard aluminium window 4mm Single Glazing 7.9 W/m²/K
Note: Window U values for wooden, steel and aluminium windows taken from SANS 204 Table E.1 –  Worst case whole residential glazing element performance values.

Green Tip

REHAU’s uPVC window and door Systems conform  to the energy performance standards of SANS 204 and 10400XA