文档介绍：Improving Window
Energy Efficiency
Why Should I Worry About My Windows?
“My heating bills are out of this world.
Windows can account for What’s the problem?”
up to 25 percent of total — Heat loss through and around your windows is costing you more
money than you might think.
house heat loss. This fact
“I can’t sit beside some of the windows in my home
sheet describes affordable because of their cold surfaces and drafts.”
— Cold air entering your house through cracks and crevices around
and effective options to windows can make for an fortable living environment.
improve the energy “Condensation and frost on my windows are creating
mould and rotting the frames.”
efficiency of the windows
— Excessive condensation can be a sign that a window needs some work.
in your house.
Windows allow natural light and fresh air to enter our houses, provide a
view to the outdoors and can serve as vital emergency exits. But windows
can also be responsible for unnecessary heat loss, high energy consumption
and cold drafts, and can be subject to condensation problems.
This fact sheet explains how you can help ensure that these problems are
kept to a minimum by improving the energy efficiency and performance
of your windows using products that are available at your local hardware
or building supply store. Improving the energy efficiency of your home’s
windows can substantially reduce your home’s energy use, cut your heating
and cooling costs and reduce greenhouse gas emissions that contribute to
climate change.
Improving Window Energy Efficiency
The Benefits of Energy-Efficient Windows
Energy-efficient windows will:
• increase fort
Energy-efficient windows reduce cold drafts and make a house feel
warmer during the heating season.
Figure 1 • help control condensation
The interior surfaces of energy-efficient windows stay warmer, which
Double-hung window showing means you can maintain a higher level of relative humid