BET also installs Energy Star-qualified windows when appropriate.  We use quality windows that are suited for Northern New England's climate and are backed by strong service and warranty programs.

We are proud to offer a window with a higher solar heat gain coefficient (SHGC) than most windows on the market.

Why pay attention to SHGC?
Because SHGC indicates how much solar heating is achievable from the window.  Most windows sold in New England have a low solar gain low-e (low emissivity) thin film coating that is more appropriate in hot climates such as Florida.  Low-e coatings are good, but some are better than others.  The best low-e coating for most buildings in New England is the high solar gain "hard coat" that reflects heat back into the building but also allows occupants to enjoy more free solar warming from the sun.

An excellent unbiased source about window technologies is the Efficient Windows Collaborative.  Check out their fact sheet entitled "Selecting Energy Efficient Windows in New Hampshire."

We often find ourselves talking homeowners out of purchasing replacement windows.  Most homes in New Hampshire have window-storm window systems that seal air out relatively well, and provide perhaps an R-2 insulating value.

R-2 is a pitiful insulating value, but most window sales hype typically overlooks that most new "insulating" windows have only an R-3 insulating value (U = 0.33).  Going from R-2 to R-3 is a 33% improvement in insulating value, but windows are still thermal weak links in most buildings.  Money can be often be better spent energy improvements other than new windows.

Consider replacing windows if they:

• Are single pane with no storm windows.
• Allow significant air leakage.  If they rattle when the window blows or cold air comes in through pulley holes they may be contributing to your fuel dollars escaping through unseen gaps -- confirm with a blower door test.
• Have been painted with lead paint (pre-1978), and they are opened and closed frequently.
• Produce condensation on the inside in cold months -- a possible source of mold or rot.
• Have a cloudy appearance, likely from older double-paned windows with a faulty seal between the panes.
• Are difficult to open and close.
• Are ugly and you want to replace them!

                                  B.E.T. -- Solving your building energy problems