Did you know that sealed window units have been around since the 1960s? Every winter, it seems it’s a challenge to stop the transfer of heat from going outdoors. When heating bills are soaring, homeowners find that insulated glass units (IGU) help keep heat indoors and provides savings on their heating bill.
Sealed window units are great looking as well as energy-efficient. If you haven’t heard of insulated glass units continue reading below to learn more.