Austinair Healthmate Plus VS Austinair Allergy machine.

[Saemma]

You're very welcome Gg.

 

[lotus15]

Thanks Saemma, very good to know This info matches up with what I learned about air purifiers when I began my research a while ago... an air purifier dealer told me that depending on your usage, you really need to cut what the manufacturers say (in terms of square feet) at least in half and in some cases a quarter. That's why I think that it is important that I buy a full-sized, even though the room is hardly 150 square feet.

 

[Saemma]

Thanks Saemma, very good to know This info matches up with what I learned about air purifiers when I began my research a while ago... an air purifier dealer told me that depending on your usage, you really need to cut what the manufacturers say (in terms of square feet) at least in half and in some cases a quarter. That's why I think that it is important that I buy a full-sized, even though the room is hardly 150 square feet.

I think it's somewhat deceiving for manufacturers to do this. If it weren't for the internet and being able to speak to *unbiased and impartial* air purifier specialists I would really have no clue. Thank goodness I simply live in an appartment right now. Once I purchase a house, this one air purifier will most probably not be sufficient.

 

[trout]

Thanks for the info.

I think that 8 air changes per hour is a bit overboard though, even 4 is a lot. ASHRAE standards for residential houses are set at around 0.5-0.7 for a 500 sq ft space. 1-2 is sufficient unless you have a source constantly polluting the air.

Something else to think about, In my research most engineers of air purification and ventilation systems feel that rating a system by air changes per hour is a bit arbitrary and the standards set based on the CFM of fresh air produced relative to the number of persons occupying the space is a better way to rate the efficiency of a system. The amount of work the system can do has nothing to do with room size.

So a more objective way to compare systems isn't to look at what the manufacturer says it can do in room size, but to ask how many CFM of air it purifies and who did the ratings. I know AustinAir has theirs independently tested.

 

[birdlady]

I had also read to cut the square footages AT LEAST in half...that was one deciding factor on the Austin Air over any others for my last purchase....I am also running my honeywell in the same space....can't hurt!

 

[Saemma]

Thanks for the info.

I think that 8 air changes per hour is a bit overboard though, even 4 is a lot. ASHRAE standards for residential houses are set at around 0.5-0.7 for a 500 sq ft space. 1-2 is sufficient unless you have a source constantly polluting the air.

Something else to think about, In my research most engineers of air purification and ventilation systems feel that rating a system by air changes per hour is a bit arbitrary and the standards set based on the CFM of fresh air produced relative to the number of persons occupying the space is a better way to rate the efficiency of a system. The amount of work the system can do has nothing to do with room size.

So a more objective way to compare systems isn't to look at what the manufacturer says it can do in room size, but to ask how many CFM of air it purifies and who did the ratings. I know AustinAir has theirs independently tested.

That's why I decided to speak to people who's business it is to test ALL types of air purifiers.