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Azerbaijan signs contracts with foreign companies for Industry 4.0 education center Apa.az
Big question for us: do we go all-in on 100% heat pumps? Or do we go with hybrid heat pumps? The energy engineer is all-in on heat pumps and thinks we should be fine. The experienced HVAC contractor leans hybrid heat pumps. Looking for community experience and feedback. I’m a mechanical engineer and believe in […]
Dear GBA Community, We are in the midst of building a moderate-to-high-performance home in central Vermont. Following extensive discussions with our architect, we had settled on the following wall assembly (from outside in): * Siding (Everlast vertical board & batten, which has a tiny bit of rainscreen) * Hydrogap (for a little extra rainscreen to […]
Don, tHis is what I did for my house: I ran horizontal purlins spaced every 2 feet. In between the purlins was 1.5″ of foam. Then I placed sheets of 8.5″ thick foam (staggered) on top. I used long screws through the foam to hit the horizontal purlins. The purlins are an easier target than […]
1550 square foot duplex home built in 1900 in Western Massachusetts3 floors: first floor is one unit, second and third floor is a second unitCurrently heated by a 90k btu natural gas furnace (way oversized, I calculated roughly 45k btu needed using Dana Dorsett calculations based on gas bill) with 6inch ducts to first and […]
WaterlooBuild | Sep 23, 2025 12:55pm | #1 Emel, What climate zone are you in? What is your wall detail? Do you have any exterior insulation? Do you have an interior vapor retarder? What is your sheathing? If your wall is fairly vapor open and you have a well detailed rain screen with airflow venting […]
QatarEnergy and Shell’s Pearl GTL recognised by World Economic Forum as Global Lighthouse Site | Gulf Times Gulf Times
