There are many reasons to replace your old windows in San Diego with new, energy efficient windows. For instance, you may have decided that your house could use a little more light, or some of the rooms in your home have become stuffy requiring better ventilation. Another reason, and it is a big one for homeowners, is better energy efficiency. One of the main reasons homeowners replace their windows with new, energy efficient models, is to help decrease energy loss. However how can you tell when a window is truly energy efficient? This practical guide covers some of the tell-tale signs to look for when shopping for energy efficient windows in San Diego.
Reading the National Fenestration Rating Council (NFRC) Labels
One of the main tools that you can use to help you choose energy efficient windows is the NFRC (National Fenestration Rating Council) labels. These labels (found on the windows themselves) have helpful information about the specific energy performance of windows, such as solar heat gain, condensation resistance, and air leakage. The NFRC will list five different ratings on every label. These ratings show you product performance as a whole. The ratings include U-factor, the SHGC, (Solar Heat Gain Coefficient), the VT (Visible Transmittance), AL (Air Leakage), and CR (Condensation Resistance). The U-factor rating is important to consider for when winter comes. It shows you how well a window prevents loss of heat. The ratings range from 0.20-1.20, and the lower the rating is, the better the window is at holding in the heat. The Solar Heat Gain Coefficient measures how good a window is at blocking solar rays from the sun. The ratings range from 0-1, and just like the U-factor, the lower the rating is, the better your window will be at blocking undesired heat. The VT rating measures the amount of light that passes through a window. The ratings fall between 0 and 1, and the higher the rating, the more light can pass through. This allows for maximum visual comfort and decreased energy use. Air leakage determines how much outside air a window will let in. Ratings are between 0.1 and 0.3. The lower the rating, the better the window will be at keeping undesired air out. The last rating, CR, measures how well a window can resist condensation. The ratings of the Condensation Resistance are numbered from 1-100. The higher the number is, the better your window will be at keeping condensation at bay.
Clear Concepts Door & Window Offers Superior Energy Efficiency in Windows
Keep in mind that while the NFRC generally lists information about all five ratings, some labels may not have everything. The manufacturer can exclude ratings about the Air Leakage and the Condensation Resistance if they so desire. Remember: Information that is missing may indicate that a window does not have as good a performance as a window displaying all five ratings. Clear Concepts Window & Door only offers windows that have superior energy efficiency. Give us a call today and find out how we can serve you!
Clear Concepts Window & Door
7525 Mission Gorge Rd. Suite G
San Diego, CA 92120
Ph: (619) 583-7171
Fx: (619) 583-7169