$450 – $550

AllerAir 4000 Vocarb Editor's Rating :
$500

AllerAir 4000 Vocarb

If you don’t care about noise, style and ease of use – but need a powerful machine that could help reduce odor, smoke and harmful gases, consider this one. But if you need a balance between the two, keep looking.

AllerAir 5000 Vocarb Editor's Rating :
$550

AllerAir 5000 Vocarb

What AllerAir has built here is a machine that can clear your everyday airborne contaminants effectively and also controls odor, smoke and gases – better than most commercial machines out there.

If you live in an area where that is a big problem, seriously consider this machine.

Allerair 5000 Exec Editor's Rating :
$500

Allerair 5000 Exec

Like we said before, the 5000 Exec is just like a rally car. If you want performance – this machine can deliver it. But if you want a machine pleasant enough for your eyes and smart enough to tell you when the filters need replacement, look elsewhere.

Austin Air Healthmate Plus Editor's Rating :
$549

Austin Air Healthmate Plus

Austin Air Healthmate+ is like a car with a very powerful engine. Unfortunately, it lacks many convenient features you’d expect when you buy a machine at this price.

The company takes a great care to add potassium iodide into it’s carbon/zeolite filter to control gases and smoke. It also has 60 feet of true HEPA filter,which is one of the biggest filtration area in a home air purifier.

But while the core is good, we have a few issues with this machine.