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HRVs have been designed to exchange heat, and ERVs to exchange heat and moisture, but have either specifically been designed not to exchange virus particles? On
by jessaustin 6y ago
HRVs have been designed to exchange heat, and ERVs to exchange heat and moisture, but have either specifically been designed not to exchange virus particles? One wouldn't want to make any assumptions...
- danans 6y agoAt least with heat recovery ventilators, the air streams do not mix at all. Unless the virus finds a way to penetrate the metal fins of the heat exchanger, it should be completely fine.
- bluGill 6y agoThere are several different designs, some there is a mix of streams. Most are sadly not particularly efficient overall, but still much better than leaving a window open.
- danans 6y agoIs it really an HRV if the air streams mix? [1] The primary function of an HRV is ventilation. Any air stream mixing would nullify that objective. 1. https://www.greenbuildingadvisor.com/article/misconceptions-about-hrvs-and-ervs https://www.greenbuildingadvisor.com/article/misconceptions-...
- bluGill 6y agoThere are a few different types. One type blows air out "across rocks" to warm them up, and then reverses the fan pulling air in "across the same rocks" I simplified a lot in the above, but the idea should be clear - there is some mixing of streams in this style.