Abstract
The results of this study indicate that central air conditioning can be an effective method for lowering detectable pollen concentrations in a normally occupied residence. In addition, the detectable microbial content in the air of the air-conditioned residence was lower than that in the air of a control, nonair-conditioned residence. The number of detectable microorganisms was lower when air-filtration equipment was used in conjunction with the air-conditioning system. Also, the number of Serratia marcescens microorganisms was reduced much more rapidly when air filtration and air conditioning was used, as compared with the rate of “decay” of the organisms in the room without filtration or air conditioning.
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