Air cleaning devices
Here are some things to consider when you're thinking about getting a portable room air filtration device:
Try solving the air quality problem at its source
Before you buy any device, make sure you've done all you can to solve your air quality problem at its source. For example:
When might an air filter help?
In areas where particles are present and cannot be otherwise eliminated, and people are particularly sensitive (for example, in the bedroom of a person with asthma), an air filtration unit with a HEPA filter may be a worthwhile addition. A filter with a charcoal component can also help in eliminating some gaseous odours.
Before you buy an air cleaning device, figure out what size of device is appropriate for your room, and where in the room it should be placed for maximum benefit. Putting the filter near the person affected may be more beneficial than having it farther away. Check the level of noise when the system is operating. Monitor the filter condition regularly and replace filters when necessary.
Can air filters get rid of second-hand smoke?
No. There is no filtration or ventilation system that can effectively remove second-hand smoke (environmental tobacco smoke). Second-hand smoke has more than 4700 compounds in it. The only sure way to protect yourself from the harmful effects of second-hand smoke is to make sure no one smokes indoors.