Has anyone ever purchased an air purifier for the purpose of reducing pet allergens?

Yes. They work. We have two dogs and a cat, and a relative who is allergic. She can come in our house and not have to worry about a sneezing fit. : )

@CaptainHarley: Can you tell me which one(s) you have? I’m leaning toward either this or this.

REALLY??! ! So when I get my own place, I can FINALLY get a kitty? I can? How many square feet per purifier?

Mine is an Arm & Hammer Tower style Air Ionizer. Not sure how to look them up online.

Just the one does a pretty good job of air purification in our little 1,064 foot home. : )

@CaptainHarley: One level?

Yes. One floor, with 5 rooms and one bath.

We built the entire thing with the idea of just two old farts living in it. : )

It was recommended that I get one for my allergies and my allergist said that it has to be a HEPA certified one… so the second link you posted would be better. I never got one because I always leave my windows open so it would be pointless but that was the one I was looking at. Buying a HEPA one at Bed, Bath & Beyond is a great idea because you can get 20% off with their coupons and they take stuff back if it stops working.