Air Purifiers

I am looking for something that will keep the dust level to the minimum and one that has those steal filters that are washable. Any suggestion would be welcome.

I currently live with a smoker (mother’s boyfriend) who smokes inside the house. I need something to purify the air to get rid of the smoke because 1) I hate the smell and 2) I don’t want it to build up in my lungs. Whats the best type/brand? HEPA, Ionizers? What brands? Thanks.

We have a wood heater in the living room. And that’s the only heat we have. But over the past few years, I’ve developed an allergy to smoke. I have an air purifier that I use in my bedroom but it blows out cool air and in the winter, it gets really cold. So do they make any that have a heat option, or something?

I have 2 kids with allergies!!,pollen. I have tried humidifiers but does not seem to work for them. I was wondering if an air purifier would help better. I just air-cleaned my house so it must be a really bad allergy season!! If you know any other tricks,please share it with me…thanks
Thank you all for your answers!! it has been really helpful…

I would rather it under 200 dollars but still be effective. I have read about them but cannot come up with a conclusion. Oh, and I want to purchase it at a local store not the internet. Thanks for any answers.

Anybody know where I can find out more info or recommend an air purifier for someone who is undergoing chemotherapy and has a low white cell count.

Thanks!

Anyone owns the new sharper image "Hybrid GP" air purifier? is it working well? does the "ozone guard" work? I’ve read and heard so many scary stories about the ozone is toxic. Does the sharper Image’s ionic breeze purifier dangerous? any suggestions?

I just bought a used one (brand new condition) because my boyfriend is allergic to my cats.

Should I run it all the time? Or just for a day before he comes over? And will it do better on the ground or up on a table?

Anyone with allergies, asthma or bronchitis out there? Which machine do you find better to treat the air with a dehumidifier or an air purifier?
Which one do you have/or have tried?

Do the - models (available at Lowe’s or Home Depot, for example), really work?