I have read conflicting thoughts on having both HRV and bathroom fans. Some say just use the HRV, some say use the bathroom fan for demand uses (like showering etc.)
We will be running a Lifebreath 200 on 20/40 intermitent. I was planning on installing digital timers in the bathrooms for demand use to engage the HRV into high for a timed 20 minute session. Although the HRV is more efficient as conserving warm air, we are in a cold climate and these HRVs seem to run in the defrost cycle more than half the time in the winter. This would be even moreso if I was pushing hot humid shower air over the exchanger with -30F air coming in. Defrost cycle will happen immeditaley.
Also the HRV will removing air from all around the house when on high not just the required area.
My ventilation advisor said I should install bathroom fans on 5/10/15/30 mintue electronic timers and just exhaust it during demand and leave the HRV on 20/40 intermittent.
Any thoughts, arguments or experience on this?