Original Electric VENTRY Fan with Misting option in use for rehab. Click image to see larger view of the whole scene.
VENTRY Fans do not have problems of high CO/carbon monoxide levels that conventional fans do when proper ventilation techniques are used. VENTRY Fans simply push more air with less horsepower, diluting the CO produced during combustion. This is possible due to extremely efficient propellers specific to each model.
CO does not accumulate if the air is flowing well (you must have an adequate exit for the air flow as well as sufficient input).
If you have carbon monoxide levels high enough that you are considering exhaust extensions, consider getting a better fan instead! OSHA standards prohibit worker exposure to more than 50 parts of carbon monoxide gas per million parts (ppm). CO levels on all gas-powered VENTRY Fan models are well below this level. Source: OSHA Carbon Monoxide Fact Sheet from osha.gov, retrived July 29, 2010. Click here to open the fact sheet, on the OSHA site, in a new window.
We use the same Honda engines on our gas fans as the other guys, but much smaller models. Our props utilize that horsepower better (see FAQ), producing more air volume with less engine power. Getting higher air volumes using smaller engines means VENTRY Fans produce less carbon monoxide to begin with. This is especially important if you use a PPV Fan for fire fighter rehab.
We urge all firefighters to watch this short, important video. Click the link at left to open TheSilentKiller.net in a new window.
To realize these efficiencies, VENTRY Fans combine several features.
Please note: When using gasoline-powered PPV Fans for cleanup and overhaul, you can use negative pressure to pull 100% fresh air through the structure and blow the exhaust outside. (More details here).
For those interested in zero CO levels, we also offer Electric Fans. Electric fans emit zero carbon monoxide and can be an extremely powerful tool against Silent Killers like carbon monoxide, hydrogen cyanide and sub-micron particle exposures.