Any suggestions of air purifier?

[bowielee]

Are there any air purifiers can sanitize the viruses or bacteria? me and my family keep getting sick.

[GeorgeStevens]

HEPA air purifier will help you.

[smkwong]

bowielee, people get sick in their homes usually because of chemical and mold in their home. Did you remodel your home recently? Did you buy a existing house and just moved in recently? Did you move into a brand new home? Did you open the windows when you can? Try open the windows whenever you can (as long as safety allow) to let fresh air into your home and see if that help. If not, hire a chemical/mold testing consultant to test the air in your home.

Most people don't open windows. The air in the homes get stale and not healthy for occupance. That's why California Title 24 building code requires a mechanical ventilation system to bring in fresh air on new homes and an addition of 1000 sq ft or more.

HEPA air filters or purifiers may help somewhat, but they don't deliver fresh air into your home. You need good fresh air.

[AdriannaMost]

The Allergy and Asthma Foundation of America suggests asking these questions before purchasing an air filter:

What substances will the cleaner remove from the air in my home? What substances will it not?
What is the efficiency rating of the cleaner in relation to the true HEPA standard?
Will the unit clean the air in a room the size of my bedroom every four to six minutes?
What is the device's clean air delivery rate (CADR)? The Association of Home Appliance Manufacturers rates air cleaners according to their clean air delivery rates (CADR), which indicate how much filtered air the cleaner delivers. There are different CADRs for tobacco smoke, pollen, and dust. The higher the numbers, the faster the unit filters air.
How difficult is it to change the filter? (Ask for a demonstration.) How often does it have to be changed? How much do filters cost? Are they readily available throughout the year?
How much noise does the unit make? Is it quiet enough to run while I sleep? (Turn it on and try it, even though you will probably be in a store and may not get a true sense of just how noisy it is.)

[ffebb]

[KEasterly]

GermGuardian AC4825 3-in-1 Air Cleaner is the one I have heard of which is very efficient and affordable,

[lucienbenson]

Currently I am using Honeywell Hepa Air purifier. Works well.

[bowielee]

Recently, I notice that there is a new air sanitation technology using plasma against the threat of airborne infectious diseases, allergens and VOC. It's cool.....