ERV vs. HRV: humidity reduction
Can anyone reference any case studies that have been done that compare the performance of an HRV to an ERV in the same home? Specifically, I’m looking for data that compares what each unit does to humidity levels in the same house/environment. Theoretically, I’m thinking that an HRV should lower humidity levels more than an ERV since an HRV introduces dry air to a home and an ERV does not. Or perhaps the overall difference in humidity reduction is fairly negligible even though an HRV is introducing drier air?
Long-story short, I’m getting ready to install a fresh air system in my new construction home and an ERV would be preferable given I wouldn’t have to install a condensate line, which would require a condensate pump in my situation. I did construct a very tight home and do have a little bit of a moisture problem when there’s no ventilation (generally 50 – 60% relative humidity). However, if its been shown that an HRV reduces humidity levels considerably more than ERV, I’ll probably go that route since getting the humidity level below 50% is the most important goal.
Here’s some additional details about my home:
– 1,700 sqft new construction home.
– Fresh Air system has dedicated ducts, but is not a perfect design given constraints from beams, etc. I have stale air that is pulled from each bathroom and fresh air that is delivered to 2 out of 3 bedrooms and 1 out of 2 living areas
– West Virginia Location, Zone 5 Climate
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