Posted By John in the OC on 01/04/2008 8:22 PM
We are just starting our first SIP home.
I am a bit confused about fireplaces.. Do I understand that HRV systems can create a negative pressure therefore makeup air must be independantly provided?
Any systems exist to correct or do any manufacturers make as fireplace configured for tight (SIP) houses?
A HRV or ERV should not cause negative pressure, I have a fireplace (majestic) in my SIPs house, but the exterior air supply is not sufficient due to the tightness of the house.
And simply turning on a bath exhaust fan, clothes dryer, kitchen exhaust fan or running air handler will cause negative pressure and make the fireplace smoke if glass doors are left open .
In my next home I plan on installing an EPA fireplace that will depend on exterior air only for combustion. Ther are many out there here is one:http://www.icc-rsf.com/en/fireplaces/foyer_opel.asp