The CDC has released preliminary results of its testing of trailers, park models and mobile homes purchased by FEMA for disaster victims and the most striking thing is that all the brands had some high levels in the tests. This dovetails with Sierra Club testing of 17 different models that found at least one high test for each model.
Go to this link to read the study: http://www.cdc.gov/nceh/ehhe/trailerstudy/
An excerpt: "The GM (geometric mean) formaldehyde levels varied significantly between between travel trailers, park models, and mobile homes, but a wide range of formaldehyde levels were found in each of the three types. All three types contained some units with levels that were elevated (Table 1) relative to usual U.S. background levels (i.e., levels to which persons typically are exposed during daily life, typically 10- 30 ppb in indoor air).
"The travel trailer brands Gulfstream, Keystone, and Pilgrim were not significantly different from each other but each showed statistically significantly higher levels of formaldehyde than the other travel-trailer strata combined. After adjusting for smoking, windows being open, temperature, and humidity, Forest River travel trailers also had significantly higher formaldehyde levels as compared with all other travel trailers combined."
THE REALLY IMPORTANT THING TO REMEMBER is these tests were done at the coldest time of year when formaldehyde levels would be at their lowest level. And people weren't allowed to be cooking or bathing because formaldehyde levels would be higher. Under real life use of these trailers, formaldehyde levels would have been even higher.
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