I’ve heard that some heat recovery ventilators produce ozone. Is that true, and if so how?
![](https://secure.gravatar.com/avatar/373df29681c2f42ef6a32e96196acd85?s=52&d=https%3A%2F%2Fimages.greenbuildingadvisor.com%2Fapp%2Favatars%2F200x200%2Fm.png&r=g)
rom44
| Posted in Mechanicals on
How can you know you are buying one that doesn’t?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Search and download construction details
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb1.png)
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb2.png)
Replies
Mark,
Where did you hear/read that HRVs produce ozone?
Mark,
I think you are confusing HRVs -- useful appliances -- with a controversial category of appliances, namely "ozone generators."
Don't ever buy or use an ozone generator. For more information, see this article:
https://www.epa.gov/indoor-air-quality-iaq/ozone-generators-are-sold-air-cleaners
At some point it must have been seen as a potential problem as the NRC looked into whether the blower motors or filtration was generating ozone. But I don't see anything published after 2013, so it's probably safe to assume there wasn't a problem.
https://www.nrc-cnrc.gc.ca/eng/reports/2013_2014/clean_air_regulatory_agenda.html