Green Homes News

Happy New Year all.  I am an architect renovating a Zone 5 vacation condo / townhouse with a cathedral ceiling.  The original roof is 2x10 exposed rafters, 3" to 4"…

Building in CZ 6 in an area that seeing a good amount of snow. Question regarding zip roof sheathing and water and ice peel and stick....If you were installing zip…

Tropical Mountain Air Conditioning? The setting: latitude 10 degrees, altitude 1300m (4500'), daily temperature range: 12-24C (55-75F) more or less year round.  Humidity: high in the short "dry" season to…

Looking for advice/feedback on the 2021 Energy codes. If I am understing correctly, the 2021 codes for climate zone 5 are as follows: R20 + 5ci,, R13+ 10ci, or 0+…

Minisplit comfort in leaky house zone 4a Hi, I was able to go from about 5200 at neg 50 cfm to 4200 at neg 50 cfm by doing closed-cell foam…

I looked through the q&a and saw a couple similar situations to mine but not quite enough for me to know if I can do what I want to do…

Hello,I added 2" of rigid foam to an unfinished portion of my basement walls in zone 4 (St. Louis,MO) and then added 16" oc 2x4 framing along with R-15 mineral…

Hello, I'm looking at switching my heating and AC from a gas boiler and window units to min splits.I'm wanting to make sure I provide enough heating and cooling without…

I have a 2006 New Yorker boiler and hot water baseboard system I need to remove. My HVAC company is removing the tank, and I'll be scrapping the copper pipe,…

Pros and cons of single-, two-, and multi-stage heat pumps for heating and cooling

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I have Panasonic Intellibalance ERV Cold Climate. This one - >https://na.panasonic.com/ca/indoor-air-quality/fresh-ventilation-filtration/energy-recovery-ventilators-erv/intelli-balancer-100-50-100-cfm-0 I would like to attach it to the underside of a downstairs stair case, approx 45 angle. Panasonic recommends it to…

From the articles and FAQs I have read on this site, I believe that the materials I  listed below are generally vapor-permeable (mineral wool, wooden panel/boards) or at least semi-impermeable…

Converting a home to all-electric service often comes with a blanket recommendation for 200 amps but there’s an argument to be made for going on a “watt diet”