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The Home Energy Rating System (HERS) by RESNET provides a detailed look at the energy efficiency of a new home.
A HERS rating is like a golf score: the lower the better. A HERS rating
of 100 is a standard, code built home. A HERS rating of 0 is a zero
energy home - a home that generates as much energy as it uses. A HERS
rating is a computer model that can evaluate different insulation models
and is best used during the planning stages of a house. It can answer
questions like which is the most efficient way to insulate the attic?
What is the best option for a furnace or boiler?
A HERS rating
can go a long way in satisfying the requirements of the building
department. Beyond that, the MassSave program has some good rebates on
appliances and free light bulbs that are part of the energy analysis.
A
3D model of the house is built from your plans. The energy information
from that model is added to the HERS rating software. When the house
is insulated and before the sheetrock is installed, a rater would come
out to the house and grade the insulation installation, test the duct
system (if necessary), and potentially do an initial blower door test to
test the leakage and pinpoint places that might need some extra work
before the walls are closed up. Then at the end of the project, a final
blower door test will be done and light bulbs installed.
Paul Raymer has been a HERS rater since 2009 and is an IREC Master
Trainer. The up-front cost for the HERS rating is $750 which includes
all the modeling, blower door, and duct testing. This is usually
returned to the homeowner by the Mass Save rebates. But the rebates
could exceed that amount.
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HERS ratings cost a little but save a lot! Contact us at 866-389-8578 or [email protected]
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