"I'd consider keeping the thermal & pressure/air boundary at the roof deck (take advantage of the relatively tight roof deck) and install a sealed/taped Intello membrane as an air barrier. Please meake sure you add enough insulation to…"
"All that really matters is to assume it's an ACM until "proven" otherwise or professionally remediated & tested clear by an industial hygenist.
Testing is free from the ZAI Trust for vermiculite anywhere in a home & they pay…"
Demand reduction trumps production efficiency every time because its forever!
Still love the hybrid electric (Heat Pump) water heaters though as you get the best of both worlds, presuming you don't have access to low cost…"
"We've used the shower start type devices for about 6 years and found they work great! Especially if HO has kids that might not be as mindful to monitor the shower temp closely while waiting. Other big plus is that when connected in…"
"Keep in mind the additional delay induced by not having a ready supply of hat water in the tank, the possibility of the "cold water sandwich" effect, the importance of matching historical flow rates / temp rise. IMHO it always makes…"
Client was astounded that their builder never insulated within the framing for a potential window in their 10 year old modular home. See customer hand prints on sheet rock where they could actually "feel the cold".
"I'd check with the local installers as to when the orig. install was and what product they were using. Grace, etc. stopped producing / selling ACM vermiculite in the mid. 90's.
"Are including the Efficiency Maine cash rebates of up to $300 in your calculation? Are you sure each of these units will actually supply enough hot water to meet peak demand? Have you thought about annualized lifecycle cost =…"
"At Evergreen Home Performance LLC in Rockland ME, we have been involved in 2 recent Habitat builds. We were pleased to volunteer our time and talent to ensuring that tight very well insulated and adequately ventilated houses were…"
"Perhaps the 2nd time around the local home performance hero (LHPH) decided to insulate the heating pipes and / or the foundation walls. I am of course assuming the pipes were probably proximate to an un-insulated / un-air sealed…"
Not to worry, I'm not a native nor thin skinned.
I suppose it is unusual that our clients like the idea of locking in a worry-free investment that yields 10% annually on each invested dollar, has a value to investment ratio of 1 to…"
Interesting how you can determine all this by what you "see, just driving around."
I agree that the "price" of tanked resistance elec.DHW is lower but would counter that the "cos"t is actually higher.…"
Great discussion you started and wonderful to read the diff. opinions & experiences. In my experience, I've found the reality trumps theory every time so I always look for verification.
That said, I've found that solar…"
Residential Energy+ is a Rocky Mountain Institute (RMI) initiative enabling industry actors to capture the $150 billion residential energy upgrades market opportunity, and meet the top unmet demand among homeowners: improved home energy performance.