For windowss and doors, the expiration date is: December 31, 2010.
The expiration date of Dec 31, 2016 is for the following 3 categories:
- Geothermal Heat Pumps:
Geothermal Heat PumpsGeothermal heat pumps are similar to
ordinary heat pumps, but use the ground instead of outside air to provide
heating, air conditioning and, in most cases, hot water. Because they use
the earth's natural heat, they are among the most efficient and comfortable
heating and cooling technologies curren