Ozone concentration from electronic air cleaners
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  1. #1

    Ozone concentration from electronic air cleaners

    Has anyone noticed that when using electronic air cleaners in a foam insulated home the smell of ozone? Does the Ozone concentration increase when these units are operated 24/7 in house that is tightly sealed!? i.e foam insulated homes...

    I just read this study from European Commission Joint Research centre, Institute for health and consumer protection. Here is an excerpt.

    6 RISK MANAGEMENT OF OZONE RECOMMENDED IDEAL PRACTICE
    For managing indoor ozone concentrations, there are two practical management options: 1)
    to manage the entry of ozone from outdoor air and 2) to minimise indoor sources of ozone.
    Ventilation
    Typically outdoor concentrations of ozone are higher than indoor concentrations.Therefore,
    in the absence of indoor sources, outdoor air is the driving force for ozone concentration in
    indoor air. In practice, this means that keeping windows open or otherwise increasing the air
    exchange rate, especially in hot summer days, when outdoor ozone is typically at its highest
    level, will increase indoor ozone levels.
    It is also recommended to use mechanical ventilation, which removes ozone by surface
    reactions in air channels. Especially, if refrigerating cooling of incoming air is not available,
    the use of active carbon filters is recommended to decrease indoor concentrations of ozone.
    Source control
    Ozonisers should not be used in indoor environments. Indoor ozonisers are marketed as
    indoor air purifiers, while in reality they add a new direct source of toxic air pollution ozone
    and secondary source via highly irritative reaction products of ozone with someVOCs such
    as terpenes. It should be ensured that ozone emissions from devices commonly used indoors,
    such as printers and copy machines or other electrical devices are minimised.
    It is recommended to minimiseVOC emissions from the materials and products that are used
    indoors, because reactions of ozone with VOCs produce compounds that might be highly
    irritant. Therefore, it is recommended to develop harmonised European wide emission
    labelling systems to avoid unnecessary VOC emissions indoors.

    I believe that the American Standard Clean Effects is producing 0.03ppm of Ozone on the highest setting. Once again does this ozone level accumulate in a tightly sealed house to unhealthy levels?

    Any thoughts?

  2. #2
    Oh and here is a link that study and others http://ihcp.jrc.ec.europa.eu/our_act...a-report-no-11

  3. #3
    Join Date
    May 2005
    Location
    Lubbock Texas
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    The answer to your question is yes it will accumulate in an enclosed space. .1ppm for 8 hours is the PEL or the Permissible Allowable Limit. Stand alone units are restricted to .05 output in California and Canada. There are online kits that you can order for a small fee that is a litmus paper that will tell you your levels without a big expense.
    Ozone will effect everyone different, the healthy adults in the home at that level may not notice the ozone levels. The elderly, sickly,kids and pets the long term health effects can be a lot different. I would suggest with the continued use of EAC equipment in a home that fresh air is introduced to help dissipate the ozone and it is beneficial in the reduction of VOCs. That is assuming you are not near freeways of an industrial zone. I have been measuring Ozone levels in a casino the last two days. It sure wasn't helping with the smoking odors and I could smell it over the cigarette odors at times.
    The premise of ventilation is that the OA is clean or of sufficient quality to be used for dilution. Traditional ventilation is somewhat being threatened by the fact that the EPA is changing the requirements for outdoor air quality which is creating non-attainment zones in what is now becoming a significant portion of the country. That means that buildings in those areas will need to clean up the OA before they bring it into the building.
    www.genesisair.com
    Genesis Air Inc.

  4. #4
    Thank you for that information I will order a test kit.
    Any kit in particular you would recommend?

  5. #5
    Join Date
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    Disconnect the power, recycle the cells, and put in media filter cartridges which don't produce ozone and actually remove dust.

    No need for a test kit.
    General public's attitude towards our energy predicament: "I reject the reality of finite resource depletion and substitute it with my own; energy is infinite, we just need an alternative storage medium to run the cars on. The economy can grow indefinitely - we just need to "green" everything! Technology is energy! Peak what?"

  6. #6
    Join Date
    May 2005
    Location
    Lubbock Texas
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    Quote Originally Posted by momoformula70 View Post
    Thank you for that information I will order a test kit.
    Any kit in particular you would recommend?
    The Eco Badge Ozone Kit isn't bad. I have seen Industrial Hygienists using them.
    amazon.com has some fairly cheap
    http://www.amazon.com/Eco-Badge-Ozon.../dp/B004WO8CGO
    The premise of ventilation is that the OA is clean or of sufficient quality to be used for dilution. Traditional ventilation is somewhat being threatened by the fact that the EPA is changing the requirements for outdoor air quality which is creating non-attainment zones in what is now becoming a significant portion of the country. That means that buildings in those areas will need to clean up the OA before they bring it into the building.
    www.genesisair.com
    Genesis Air Inc.

  7. #7
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
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    6,231
    Fresh air change at an air change in 4-5 hours is formost. This will delute the pollutants in the home and renew oxygen. Why add ozone? A good air filter like merv 11 and maintain <50%RH to avoid growing the biologicals like mold, dust mites, and bacteria.
    Funny, an air tight home, lets add a ozone generator.
    Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

  8. #8
    Did not buy a ozone generator. I thought I bought the best filter out there, it was installed when house was built. Found out after the fact that introduces ozone.. :-/ it's turned off right now..thanks for all input.

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