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Ventilation
Another word for “airing the place out,” ventilation is one of the top three ways to improve indoor air quality.MERV
A standard for rating heating and air-conditioning filter efficiency.Environmental agents
What the scientists mean when using this term.Duct
These metal conduits distribute heated or cooled air from a furnace or central air conditioner. No one’s sure whether they need regular professional cleaning.Air filter
All forced-air heating and air-conditioning systems have HVAC filters.Furnace
Replacing or cleaning the filter each month is key.Bathroom fan
Exhaust fans aren’t just for keeping the bathroom from smelling bad.Air cleaner
There are several different types, but these useful appliances are no substitute for good cleaning and other preventive measures. Humidity
What this term means for a clean, healthy home.Vacuum filtration
Keeping the dust inside your vacuum.Air watt
This standard measures the cleaning power of a vacuum cleaner.Relative humidity
Even humidity is relative.Fabric filter
A fancy term for a wide variety of dust catchers.Candles
They create a warm, cozy atmosphere — and present some hazards as well.Biological contaminants
Keeping these at bay is the main point in a lot of cleaning tasks.Television
These appliances attract a lot of dust. Here's how to prevent or remove it.Dust, dusting
It's everywhere, all the time. Here's how to keep it to a tolerable minimum.CADR
Look for these numbers when comparing portable room air cleaners.Vacuum system, central
These powerful units offer many advantages over upright and canister vacuums.
HEPA
A term relating to filter effectiveness. HEPA filtration removes 99.97 percent of all particles 0.3 microns and larger.