One of the most sought-after qualities in replacement windows is energy efficiency. In today’s post, we explain how gas fills are used to boost the energy efficiency of windows.
What Are Gas Fills?
Gas fills are inert gases used to fill the space between multi-pane windows. By default, regular air fills this space. However, special gas fills are better at slowing the transfer of heat through a window.
Argon as a Gas Fill
A non-toxic, inexpensive, colorless and odorless gas, argon occurs naturally and makes up less than 1 percent of the gases in the atmosphere. It is a great gas fill because it doesn’t contain moisture that can condense between glass panes, resulting in cloudy glass areas that impede views and natural light. Aside from helping replacement windows insulate well, argon is also non-corrosive and environmentally friendly.
It does have one drawback though: argon doesn’t expand or contract. Since windows do, argon is unable to keep up with the expansion and contractions, resulting in the eventual failure of window seals and the gas fill leaking. Typically, the leakage rate for argon is 1% every year.
To address this limitation, manufacturers combine argon with other inert gases like krypton, further improving window energy efficiency as well in the process. Improvements in window framing and glass options are in place to limit expansions and contractions.
Renewal by Andersen® of Greater Philadelphia carries a wide range of window replacement options, all of which are designed to be energy-efficient. To learn more about what we can do for you, simply give us a call at (610) 813-6777. Schedule a FREE consultation with us today! We serve Philadelphia, New Jersey and the surrounding communities.