General Questions- Page 177 of 1411
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Spray painting copper gravity film heat exchanger
Hi all,Installing a 72" gravity film heat exchanger. In Philly, things made of copper tend to walk - I want to spray paint the GFX black so it looks like…
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Copper pipes 1/2″ from wall. If I spray foam but leave a 4″ gap where the pipes are, will heat loss be negligible or concentrated?
I imagine heat loss along this strip will be much higher per square inch than if the whole wall was bare. I'm not saying the wall would be better with…
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Under-Slab Drainage + Radon Mitigation in Same Pipes
HelloI am in zone 6 and planning for a crawl space with crushed stone base + 2" rigid insulation + 6 mil poly barrier + 3" rat slab. I will…
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2″ rigid foam perimeter
Hello all!! I have a slab addition project. I have covered the entire area with 2" rigid foam all the way to the foundation walls. The foundation walls (about 3'-4'…
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ERV install location + Ducts
I live in Zone 4A - 2 story colonial. I've been doing a lot of work on sealing the home and improving insulation. I removed the R-30 BIF (blown-in-fiberglass) in my…
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What kind of HVAC pro do I need?
We own a 1956 brick ranch in the Washington DC area, with all the stupid design decisions you would expect to see for the era.We would like to revamp the…
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Estimate for Electric boiler energy use
Hi All: Total noob here. I'm amazed at how much expertise this website/group has. I completely mix up watts/amps/volts/ and have only recently learned that I have a boiler not…
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Relocating Floor Duct to Wall Duct
HVAC ducting question from Ohio, zone 5A. We are relocating a floor baseboard defuser with a wall register in the same wall. The baseboard defuser is fed with a 2-1/4…
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Insulation retrofit mess
Hi folks, I'm a new poster but have been really appreciating the forum. I've been learning a lot from articles and posts but have some questions here that I'd welcome…
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Concrete-free slab – Mesh under Advantech subfloor?
Some background: I'm building a small addition in Maine, Zone 6A. The floor will be concrete-free, with layers as follows (from bottom to top):*compacted stone*geotextile fabric*Glavel (~12")*geotextile*screed layer*stego 15mil VB***mesh??*2…