Suggest you chechout the ventilating dehumidifier for make-up air ventilation and summer humidity control. With all the exhaust devices you mention, providing 50 cfm of make-up air when your home is occupied purges indoor pollutants, replaces oxygen, and helps exhaust devices to function. In addition, the ventilating dehumidifier is capable of keeping your below 50% RH regardless of the style or load on the a/c. Humidity control is important with high humidity summer ventilation and low cooling load. Keeping the indoor %RH below 50% eliminates mold potiential in the basement and dust mites in the home. When no exhaust devices are operating, the 50 cfm will leak out through exhaust devices. Several makes of ventilating dehumidifiers are available. I peddle Ultra-Aire made by Therma-Stor which is available from most major brand contractors.
Originally posted by finhead
I am currently designing a new ranch (cathedral ceiling front to back and I-joist floors making duct work difficult) with radiant in floor heating. Possibly using Icynene for an airtight home. Possibly going mini-split for zoning and no duct work. However, I am concerned with ventilation. With all of the exhaust fans (2 bathroom, kitchen, dryer, central vac, fireplace and hot water heater) it seems I will end up with negative air pressure.
Can an EVR balance air flow with this much exhaust?
Is there a way to provide just a fresh air intake (w/ energy recovery) and use programmable exhaust ventilation (Airetrak)?
Should I go with a traditional ducted ac and connect the EVR to it?