hrv setup with honeywell hepa - contractor says will not work
Can some of the experts in this forum advice me on this setup please. Can an HRV system be installed with a HEPA filtration system like Honeywell F500?
We have a furnace in the attic for our single level house in California. My gc recommends a HRV system instead of fans in each bathroom, laundry etc. Says it will equally well and will be cost effective compared to fans for 3baths, 1laundry etc with additional benefit of getting fresh air into the house all the time. We have some Asthma issues in our house and I wanted to install a HEPA system like Honeywell F500 as well. Neither my GC nor his HVAC sub have any experience with this. First the HVAC guys said said it is not possible with the HRV, then said that HEPA system may be redundant. The manual says it is possible and suggests the setup as shown on page 4 here. The HVAC guys says that the way it is drawn in the manual on page 4 is ok, but it will only work well when the furnace is on (barely 3-4 months here in CA). There is a slight modification that they can do to have it working all the time. However, if they do this, the HEPA will clean up the air coming from the outside via the HRV but there will no filtration on the air recirculating in the house. This means that any pollens or any dust in the house will never get filtered. To fix this, they propose that they use the originally specified April Air or equivalent filter to catch this dust etc.
This seems much less useful to me as I want to particularly filter dust mites and other internal allergens in the HEPA as well. Should I nix the HRV and go with panasonic fans in the bathrooms?