A window’s R-value indicates its insulating level. The higher the R-value, the better the window will be at keeping heat in or out.
Single pane windows have the lowest R-value and offer very little energy efficiency – less than 1.
Double pane and triple pane windows have much higher R-values, which translates to less heat transfer, a more comfortable home and lower energy costs.
The typical R-value for double and triple pane windows are as follows:
Double pane with 1/4" air space: 1.72 in winter; 1.64 in summer
Double pane with 1/2" air space: 2.04 in winter; 1.78 in summer
Triple pane with 1/4" air space: 2.56 in winter; 2.27 in summer
Triple pane with 1/2" air space: 3.22 in winter; 2.56 in summer
As you can see, triple pane thermal windows offer the highest R-values, but a double pane still offers far more energy efficiency than a single pane window.
Keep in mind that these are just the typical R-values. There are thermal windows that offer even higher R-values, which means even greater energy efficiency.
Energy efficient thermal windows make your home’s interior more comfortable. They help prevent drafts, so you can sit comfortably next to a window even on the hottest or coldest days.
Thermal windows can also help prevent cold spots in rooms, so you enjoy better overall comfort without having to crank up your heat or air conditioning.
Lower Heating and Cooling Costs
The most obvious and greatest benefit of installing thermal windows is the energy savings. Multiple panes and insulating gas reduce heat transfer. In the summer, they keep the heat outside – where it belongs. In the winter, they prevent heat loss and keep cold air outside.
Installing thermal windows means that your home’s heating and cooling system won’t have to work as hard to heat or cool your home. That translates to greater savings on your energy costs every month.
Single pane windows are susceptible to condensation. Condensation occurs when there’s a significant difference between indoor and outdoor temperatures. It’s most common in the winter because temperatures dip so low overnight.
The biggest issue with condensation is that it causes beads of water to form on the window and drip down onto the sill. Over time, the moisture can damage the sill.
Condensation is less likely to occur with double or triple pane windows because there isn’t such a drastic temperature difference.
A quiet home is a happy home. Thermal windows reduce exterior noise, so you hear less of the outside world and more of what’s happening inside of your home.
Whether you have noisy neighbors, lots of traffic on your street or construction nearby, you’ll appreciate the noise-reducing properties of thermal windows.
Because thermal windows help reduce moisture buildup, there’s less concern about:
This makes it easier to maintain your windows and keep them looking their best. Less condensation also means that it’s a little easier to keep your windows clean, which saves you time.