Heat Exchanger in Lieu of HRV
I’m planning a 300 SF off grid cabin in Leavenworth, WA, (climate zone 5, ~6,000 HDD). I’ll be using the cabin in the winter when the temps are below freezing and often dip into the single digits. We will have a small solar system and 12V/120V power, but limited battery storage. Reducing loads will be important. I’m hopeful that we can facilitate heat exchange from our exhaust air to our incoming fresh air, but may not be able to accommodate an HRV’s continuous power draw.
Does anyone have experience with sourcing air to air heat exchangers without built in fans and electronic controllers? Something that would work with 4″, 5″ or 6″ ducting? Thanks in advance and appreciate this wonderful GBA resource!
GBA Detail Library
A collection of one thousand construction details organized by climate and house part