UV-AIRE

Air Purifier / HVAC Purification System



Ref: Air Cleaners

With tighter building construction in recent years, the quality of indoor air has declined dramatically.

The air circulating in the ductwork of the average home or office can be concentrated with contaminants including molds, bacteria, viruses, and dust mites. We fill our lungs up to 20,000 times each day. Over time, these contaminants can cause inflammation of the mucous membranes, upper respiratory problems, asthmatic conditions, headaches, and flu-like symptoms.

Filtering systems offer little or no help because these airborne contaminants either pass through the filter or simply collect on the filter medium, creating a breeding ground. Now, with the UV-Aire, Air Purifying System, a solution is available to directly address the problems associated with poor indoor air quality.

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.1

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.2

Most allergy and asthma sources are passed from person to person through the air.

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. They may be severely debilitating or fatal.3

Facts About UV
The disinfection of medical equipment using UV has been a common and reliable practice.4

UV disinfection has been determined to be adequate for inactivating bacteria and viruses.5

The germicidal effects of UV light cause photochemical damage to DNA and RNA within microorganisms.6

“...ultraviolet radiation, properly integrated with heating, ventilating, and air conditioning systems, shows the most promise as a widely applicable means of air disinfection.” Richard Riley, M.D.7

UV-AIRE® Air Purification System

How The In-duct UV-Aire Works ?

UV-Aire uses the energy from a specially designed, high-intensity UV-C lamp to reduce microorganisms in the entire home as they cycle through the HVAC system. Mounted inside the ductwork, the UV-Aire sterilizes or kills most contaminants as they pass the lamp.

The process requires very little maintenance and costs just pennies a day to operate. The UV-Aire could be one of the best health and comfort investments a homeowner ever makes.



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.


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.

UV-AIRE® Air Purification SystemHow Much UV Energy is Required to Kill Bacteria?Most, if not all bacteria can be destroyed by the use of UV light. The main factors in disinfection are the amount of UV power the lamp produces and the length of time the bacteria is exposed to the UV light source.

The energy required to kill microorganisms is a product of the UV light’s intensity and exposure time. This energy is measured in microwatt seconds per square centimeter.

Intensity x Exposure Time = microWatt seconds/cm2

Table 1 lists the amount of UV energy (measured in µW-sec/cm2) necessary to destroy various bacteria.


Independent Lab TestingIndependent lab testing of the UV-Aire shows that in a single-pass air flow test, one 18-inch UV-Aire lamp can reduce levels of Serratia Marcescens (a typical bacteria) by 93%, while a two lamp system can reduce by 99%.1

The calculated average UV energy output levels of a single UV-Aire lamp in an 18-inch square duct is 2,608 µW-sec/cm2 and 6,186 µW-sec/cm2 for a two lamp system. The 6,186 is comparable to the 99% energy required for Serratia Marcescens. It can be seen that there is a direct correlation between the UV-Aire UV lamp output and the observed kill rates in the lab.

Video Tags Ultraviolet  Air  Purification  Field  Controls  IAQ