There are a lot of products promising cleaner air. Some help a great deal with the right problem; some are oversold. Here's a plain look at the main options.
Start with the filter
For most homes, the biggest and cheapest improvement is a better filter in the system you already have, changed on time. A MERV 11 to 13 filter catches far more fine dust, pollen and smoke particles than a basic one. The catch: a thicker, finer filter can restrict airflow on some systems, so it should suit your equipment. See which filter, how often.
Media filter cabinets
A media cabinet holds a deep, pleated filter, often four or five inches thick, at the system. It catches fine particles without choking airflow, and the filter typically lasts much longer than a thin one. A good choice for allergies, dust and smoke.
UV lights
An ultraviolet light installed near the indoor coil helps keep mold and bacteria from growing on the coil and in the drain pan, where it's damp and dark. That can help with musty odors and a dirty coil. It does little for dust or pollen floating through the house, because the air passes the light too quickly.
Portable purifiers
A portable HEPA purifier, sized for the room, is effective in a bedroom or office, especially during wildfire smoke. It cleans one room, not the house.
Be wary of
- Ozone generators, or anything sold to "purify" with ozone. Ozone is a lung irritant, and California regulates the ozone indoor air cleaners can give off.
- Claims about killing viruses without independent testing behind them.
Match the fix to the problem
- Allergies, dust, smoke: a better filter or media cabinet, plus a portable purifier in the bedroom.
- Musty smells: clean the coil and drain, look for the moisture source, consider a UV light. See humidity.
- Stuffy, stale air: ventilation, bringing in fresh air.
Want help choosing? Call 805-965-6326 or send us a message.
Related
More tips on air quality.