Choosing the right air purifier is easier than you might think, especially if it is for home or office use. Here are some general guidelines to follow when choosing an air purifier.

1. Choose a purifier that uses a HEPA filter, (not "HEPA-like"). HEPA air filters remove up to 99.97% of all particulate down to 0.3 microns! The HEPA air filter is made up of very thin glass fibers that trap the contaminants so that they do not flow back into circulation. All of the purifiers that we off has HEPA filters pre-installed. Click here to view our selection.

2. Make sure that you have the appropriate amount of carbon in your air purifier to remove gases and odors. Carbon is measured in pounds ranging from 5 pounds in a small personal unit, to 15 pounds to purify the air in a regular-sized room, to 35 pounds for commercial or industrial use. There are different types of carbon for different needs, and even different grades of carbon quality.

3. The air purifier should be the appropriate size for the room that it is placed in. Find out how many square feet your room is and choose the right air purifier for a room of that size. For example, you should use one size unit to filter 120 square feet and a larger unit if your room is 500 square feet. Some units can attach to your furnace and filter the air in your entire house.

4. The clean air discharge should not be on or near the floor where it will kick up dust.

5. An air purifier is most effective when placed near the source of pollutants and blowing out into the occupied space. It should run continuously. Choose a unit with a hard baked finish to avoid off gassing, and a colour that will go with the décor of the room.

6. Ask how often you must change your filters. It is better if you can change your pre filter, HEPA filter and carbon filter separately. HEPA filters usually last 3 to 5 years, whereas carbon filters last 1 to 3 years. Pre-filters, on the other hand, can be vacuum cleaned.