What Exactly Is a HERS Rating?
HERS stands for Home Energy Rating System. A new home can be rated on energy efficiency using the HERS system. It’s like golf, the lower the score the better.
A typical 50 year old home has a HERS score of approximately 140, a 15 year old around 125, and typical new homes around 100. A Synergy Home with a HERS score of 67 is 33% more efficient than a typical new home with a score of 100. That can translate to saving of $500 or more per year on utility bills.
How does a builder achieve such a low score? Synergy Homes, for example, has:
California Corners eliminate pockets without insulation in certain areas of the exterior walls.
Radiant Sheathing Barrier
The area where homes lose the most efficiency is the air flow between the attic and the home. The radiant sheathing barrier can help the attic remain up to 30o cooler in the summer and helps keep your utility bill down.
More Insulation – R38 Blown Insulation in ceilings and R-15 in walls. Code in SC is R-30 and R-13.
14 SEER HVAC System (Gas)
Tankless Water Heaters
Low E Windows
Insulated Garage Doors
For additional information about HERS and how to make a home energy efficient visit http://www.resnet.us/ and to find out if a home is HERS rated visit http://www.resnet.us/public-access-to-resnet-national-registry.
To get a list of builders in the SC midlands building energy efficient email BMHoffman@gmail.com.