Honeywell HFD-130 Germicidal Tower Air Purifier with Permanent IFD Filter

Just thought this information would be useful to others. I run mine 24/7, so I measured the power consumption and calculated how much it costs to run a month. My electricity cost is 11 cents per kWh

Running on High 24/7 - 44kWh a month. $4.84 a month
Running on Med 24/7 - 27kWh a month. $2.97 a month
Running on Low 24/7 - 21kWh a month. $2.31 a month

I owned this unit for about 3 months before returning it.

Despite it is called a HEPA air purifier, it is not. HEPA is strictly defined as a filter which has a >99.97% capture rate of 0.3 micrometer particle. This model has an advertised capture rate of 98 or 99%. Although I have also seen a few websites quoting it has a 99.97% capture rate, I doubt it. That being said, a 99% capture rate is not much different than 99.97% for most households. The poor air seal is a much bigger concern. The holder for the IFD filter does not seal tightly to the IFD filter, and therefore air will pass around the filter. This purifier actually belong to the ionizing purifier family, not the tradition HEPA filter purifier family.

Mind you, it works fine and it is fairly easy to use and clean. It is also relatively quiet. My reason for returning it is that it produces ozone and other oxidants as by-products, which is true for all ionizing purifiers. The emission ozone...Read more

I got this filter because my wife is allergic to our cat. We've tried the top of the line Sharper Image filter costing more than twice as much for 2 years that did just about nothing but did it quietly. This filter is noisy except on the low setting but even at the low setting, it keeps the air clean, a fresher smell than the rest of the house. Both my wife and I noticed the results immediately. We wake up with our sinuses clear, something we haven't felt in a long time. Because of this I order 2 of the smaller ones for other parts of the house, can't wait to put those in use.