Facts about Indoor Air
- According to the Environmental Protection
Agency, the air in homes can be up to 100 times more polluted than outdoor air.
- The National
Academy of Sciences Institute of Medicine reports that exposure to indoor pollutants is a key contributor to the asthma problems
of this nation.
- Most allergy and asthma sources are passed from person to person through the
- The air in a single room can contain hundreds of thousands of infectious bacteria, viruses,
fungal spores, and contaminants, which can only be seen with a microscope.
- Health effects may
show up immediately, or after years of exposure to poor indoor air quality. These symptoms include some respiratory diseases,
heart disease, and cancer.
Filter systems alone don't solve the problem
The majority of indoor air is conditioned by forced-air heating and cooling (HVAC) systems. Standard fiber
air filters are entirely ineffective in trapping germs, as most particles are simply too small, passing through the porous
filter. New, high efficiency style filters will only capture
airborne bacteria down to a certain size. These high efficiency
filters are nominally effective, trapping small airborne contaminants on the filter, creating a breeding ground where germs
can continue to grow and multiply.
HVAC systems are a dark and damp breeding ground for mold and bacteria, particularly
at the system filter and air conditioning A-coil. The buildup of matter on the A-coil and filter can significantly reduce
the efficiency of the appliance by constricting and reducing air flow. This means increased cost to the homeowner in addition
to the risk of airborne pollutants.
Indoor Air treatment with UV
UV’s effectiveness in killing bacteria is directly related to a microorganism’s exposure time.
Indoor air in a typical residential forced-air HVAC system will be recirculated 40-75 times a day. With a UV generating lamp
mounted in the HVAC duct, cumulative exposure can be very effective in controlling indoor bacteria.
UV rays will
also kill germs that breed in drain pans and A-coils. Properly positioned, an ultraviolet system can significantly reduce
indoor air contamination and prevent the growth of new microorganisms.
The treatment of indoor air with ultraviolet
radiation has been successful in health care facilities, food processing plants, schools, laboratories and other applications.
It is safe, silent, and proven.
Since direct exposure to UV light can cause skin cancer and blindness, the most
practical application of UV light in the home or office is in the main air distribution (heating and/or air conditioning)
system. As UV light will not pass through metal, glass, or plastic, a UV light can be installed in the main supply or return
duct of a central heating or air system without concern for direct exposure to eyes or skin. This is an ideal location since
the air in the home or office will pass through the HVAC system up to 75 times per day during normal operation, and as many
as 150 times per day in continuous fan mode.
Perfect Heating and Air offers you a variety of Electronic Air Cleaners and UV-Lights
which take care of the air pollution in your home.