Ozone air purifiers: Can they improve asthma symptoms?

Despite manufacturers' claims, ozone air purifiers don't remove asthma triggers from the air. In fact, inhaled ozone can make asthma worse.

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Ozone generators sold as air purifiers intentionally produce the gas ozone. Ozone can mask odors by changing the chemical composition of particles or other gasses in the air, making the air seem fresher and cleaner. However, ozone generators don't actually filter out the small particles that trigger asthma.

Inhaling ozone, even in small amounts, can irritate the lungs. Specific effects may include throat irritation, coughing, chest pain and shortness of breath, as well as an increased risk of respiratory infections.

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Some ozone air purifiers are made with an ion generator, sometimes called an ionizer, in the same unit. You can also buy ionizers as separate units. Ionizers do remove particles from the air. They do this by causing particles to attach to nearby surfaces or to each other and settle out of the air — but they may generate unwanted ozone.

Air filters that remove small particles — such as high-efficiency particulate air (HEPA) filters — are effective in removing allergens from the air, without posing any ozone concerns. To work effectively, filters need to be cleaned or replaced regularly, according to the manufacturer's instructions.

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Join Date: Jun Posts: 2 Ozone Generators - pros/cons First post here guys - be kind!

Picked up a new to me boat this spring - Hunter 36. Love it.
In a past life it was in salt water, had an A/C unit and a generator in the sail locker......both were removed 2 owners ago. The last owner used the boat mostly as a day sailer and didn't spend a lot of time cleaning. I've spent a good many days over the summer scrubbing anything I can get access to with a citrus based degreaser, detergent and cleaner and each of those holds/storage spaces is now visibly cleaner and smelling a LOT better.

What remains is a really funky smell coming out of that sail locker (or from below it where I can't get easy access) and when the wind direction is right the smell makes its way through the rest of the boat. Not as strong as directly in the locker but that appears to be the origin.

In that locker I stripped out the old insulation, etc...scraped and scrubbed everything back to fiberglass or wood and it's much better - but still strong and nowhere near gone.

I've read about ozone generators a little here on these forums and more extensively on forums about things like removing smoker smells from used cars, as well as removing human scents from hunting gear, etc....

Does anyone have significant experience with them (on boats or other)? I'm interested in the pros and cons.

Apparently it will kill any organic smell......but stay the heck out of the boat while it's operating.

The process used is basically oxidation - and I'm not a huge fan of speeding up any oxidation process on the boat - I've read that it's not good on electronics in particular. Anyone have experience? Any thoughts on how to keep things like autopilots, radios, tank guages, etc.....out of harms way?

I'm thinking about running it in the sail locker specifically for 'a while' to get rid of that smell, then the boat in general to take any residual odours out of things like boat cushions, etc....

Would love to hear your thoughts and experiences - sorry for the short novel.....
Thanks in advance. Registered User
Join Date: Jan Location: where my boat is anchored Boat: Irwin 52
Posts: 141 Re: Ozone Generators - pros/cons I had a problem smell on my last boat, I cleaned everything twice, put in new head. Finally found the problem when I took cushions out to get reupholstered, mold under the covers in the foam. Fellow that did my upholstery work told me to go get odoban from home depot and use it on the foam. It worked great, destroys odors not a cover up. I use odoban for all my cleaning on the boat, leaves a nice eucalyptus smell. I also use a ozone generator, I love it and haven't seen any problems, it is my understanding that it effects rubber, but not our newer rubber hoses etc which are more than just rubber. Registered User
Join Date: Oct Location: Baltimore, MD Posts: 97 Re: Ozone Generators - pros/cons I would recommend something that does not run at a high enough voltage to produce actaul ozone. It's not good for you. What you want is an "ionizer." I would use one that is in some sort of airstream. We are currently testing the application in air handlers in my hospital with positive results for what we are trying to accomplish. Right now, that is preventing the growth of molds and such on the cooling coils. It's not 100% but we have recently modified the installation to get there. We have considered them for smell issues in certain instances but have not yet tried it. Our concern here would be a kitchen exhaust located near an air intake or window. I have no reason to believe that it would not work but cannot yet speak from experience. Moderator Emeritus

Join Date: Oct Location: Jacksonville/ out cruising Boat: Island Packet 38
Posts: 31,348 Re: Ozone Generators - pros/cons I think that as long as you for lack of a better term use common sense there is a safe way to use an ozone generator. Turn it on and leave, then upon return, turn it off and open up the boat.
I assume that to get to a concentration that it would work would require the boat to be tightly closed up?

I looked up how a Soclean CPAP cleaner works out of curiosity, they kept claiming that they pumped activated oxygen through the CPAP, then just a little digging I found out that what they were calling “activated” oxygen was ozone.

Also it seems that ozone is unstable and will decompose or whatever back to O2 within 2 hours.

In other words if used occasionally and only when the boat was unoccupied and then you aired out the boat upon return, well then maybe there is no health issue, or maybe even not an issue with rubber and some plastics?
Maybe to decompose plastics requires a level of ozone that a consumer generator isn’t likely to get to?
That’s a question as much as a statement by the way.