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New territory for ME... HRV installation in Passive House.
Bill et al,
I've been asked to participate in the construction of a brand new Passive House here in Colorado. The GC for the job spoke with me on the phone. He administers an on line course that I've taught for, and requested i be involved in the construction of this home, as well as the monitoring of same. He said that the homes energy consumption would probably fall in the range of 3 to 5 btu's per square foot.......(wait for it) per Y E A R.
This is obviously not going to require a heat source larger than a hair dryer. We are proposing the use of our radiant windows to supplement heating needs of the dwelling..
THis being new new territory for me, I could use some guidance and assistance on sizing and installing the HRV to maintain good air quality within the home.
1. How many air changes per hour are required for extremely tight construction?
2. Where should the exhaust vent terminations be installed within the home? Can I use the exhaust to exhaust the bathrooms?
3. Where should the incoming air termination be located, other than obviously equally spaced out?
4. When it gets extremely cold outside, can I vary the blower motor speed to avoid over cooling the space and avoid the need to fire up toaster elements in the discharge air side?
5. Do they make a High Velocity unit that would utilize small 2" ducts, like the Centro-Therm product?
6. Does the unit need to run 24/7/365, or can I base its operation on the accumulation of CO2?
The older I get, the more I realize, the less I know about moving air :-)
Never too old to learn, and thanks to everyone for contributing to my education.
It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.