ERV effectiveness at ambient temperatures

[sancyk]

Hi,

The data on hvi.org lists efficiencies of ERVs at cooling and heating loads. What I'd like to know is how efficient i can expect them to be at transfering moisture when the interior and exterior temperatures are close (i.e no heat exchange being done).

[Carnak]

on the renewaire type probably 20 to 25%

on the ones with the wheels probably twice that

[sancyk]

on the renewaire type probably 20 to 25%

Hmmm. I callled vanEE yesterday for information on their Gold ERV and they could not provide an answer. I suspect it might be in the same range, depending on the humidity differential.

As I mentionned in other posts, my main issue is with high humidity in spring/summer/fall. I know that I need a dehumidifer but was wondering if an ERV would help as well.

The temperature differential between inside and outside for most of those three seasons would be a maximum of 10C on the hotest summer days. I probably would not benefit too much from the heat exchange of an ERV and if the humidity exchange is only 25%, I think I might be better off with a ventilating dehumidifer only.

Thanks

[Carnak]

Hmmm. I callled vanEE yesterday for information on their Gold ERV and they could not provide an answer. I suspect it might be in the same range, depending on the humidity differential.

As I mentionned in other posts, my main issue is with high humidity in spring/summer/fall. I know that I need a dehumidifer but was wondering if an ERV would help as well.

The temperature differential between inside and outside for most of those three seasons would be a maximum of 10C on the hotest summer days. I probably would not benefit too much from the heat exchange of an ERV and if the humidity exchange is only 25%, I think I might be better off with a ventilating dehumidifer only.

Thanks

vanEE uses a wheel

[sancyk]

vanEE uses a wheel

I'm fairly certain that the vanEE Gold 1001 ERV uses a paper core (interchangeable with the HRV core if required).