RESNET Modeling & Rating (11)
Chicagoland renovation aims for LEED and pre certifies zero energy capable with negative HERS
Baker+Myers SmartHaus is a LEED registered home aiming for Platinum v4.1 and is pre-certified to be Zero Energy Capable brought to you by our member company Smart Haus Wexler / Kollman and verified by members Eco Achievers.
It will ideally use about
Read more…Using radiant barriers as duct insulation, Aka "Bubble wrap" What value do you assign for R-value?
I recently inspected a house that I am rating and discovered the HVAC contractor used Big 8 bubble wrap on the metal main duct in a vented attic in Climate zone 5. I spoke to the contractor about this at the rough inspection and duct testing and told
Read more…E.L.M. Aquastar by E.L.M Leblanc SA france
I was hired to rate a house and found an ELM Aguastar 125 VP/VPS installed in the house. It is a tankless 125k Btu natural gas hot water heater with a continuously burning pilot light. Anyone know its energy efficiency rating (at least when new)?
Than
Read more…Tax Credit and the LTO test
Anybody else super frustrated by the retroactive implementation of the tax credit?
I have 2 big problems with this:
1)
Most all of the homes I rated last year did not pass the tax credit because I opted to not do the duct leakage to outside (LTO) test.
Read more…RESNET gets serious about modeling platform consistency
A critical element in ensuring the consistency of HERS Ratings is enhancing the consistency which RESNET accredited HERS Software Programs calculate the HERS Index Score. There are currently situations where a home could have a different HERS Index S
Read more…Foam Plugs for Duct Leakage Testing
Can anyone recommend a foam manufacturer who has reasonably priced, soft closed cell foam sheets which can be cut into duct boot plugs for leakage testing? I'm considering high density neoprene in 1'' thickness. The sites I'm seeing online have a l
Read more…HERS Index tracking 5 years or more after construction
Is anyone aware of HERS tracking 5 years or more after new construction? I am looking for a study that may provide how valid the HERS rating might be 5 years or more after new construction. Comparing the original HERS Rating to one later assuming n
Read more…RESNET Draft Standard 301-01
The deadline for commenting is rapidly approaching. Go to the link to Comment on 301-01. EnergyLogic has commented and here is our position on requiring blower door testing on all ratings: EnergyLogic position on Blower Door Testing for Ratings.
Read more…Heat loss from ducts
Hey there Home Energy Pros,
How do you calculate whole home heat loss from the ducts? To put this in context, I know how to calculate heat loss from the envelope (walls, floor, ceiling taking into consideration insulation levels and air leakage) but
Read more…RESNET and Home Depot - Anyone worried about that alliance?
RESNET announced an alliance with Home Depot this week, and I've heard from a couple of our raters already. They're concerned that this will undercut their efforts to build a market for trained & certified home energy raters and BPI BAs to come in an
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