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UV Lights, Ionization and Air Quality

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What is a UV light?

UV lights first found commercial popularity for use in water treatment facilities to remove mold, mildew and other biological contaminates from water and surrounding equipment. The technology was then introduced into the HVAC market in order to improve air quality, beginning with hospitals, doctor’s offices and medical facilities and eventually found its way into all HVAC system usage for both commercial and residential applications as a way to improve air quality and reduce viral and bacterial growth.The UV light can help eliminate many types of fungi, bacteria, germs, viruses and pathogens and is effective at controlling mold inside the air handler, as all mold in line-of-sight of the UV bulb will be killed, keeping the coil mold and mildew free. UV lights (stick lights) only work in a specific range, which is why we at Efficient AC, Electric & Plumbing suggest a two-fold approach. This has no effect on particulates such as dust, pet dander or other contaminates. In order to remove particulates a good air filtration system is recommended.
How does it work?
In most residential cases, we will install the UV light near the coils to prevent mold or bacteria growth as air passes through. Since all of the air passes through the coils, this kills organic growth in the air, on the surface of the coil and housing and can also significantly reduce many common allergens. In addition we will install a REME-HALO UV light system in the supply side of the unit (in the ductwork) to further treat the air as it leaves the coil and eliminating any mold growth on the outside of coil and supply plenum. This aids in allergen, virus, bacteria and odor removal in addition to mold spore growth. UV lights are particularly effective in humid climates and we recommend keeping the fan on constantly (to run all the time) or to set a circulating fan to come on every 30-45 minutes to help alleviate the build up of hydroperoxides in the duct system. This helps keep the air throughout the home clean and pure at all times (not just when the system is operating) and also reduces the build up of hydroperoxides in the duct work that can cause strong oxidation odors when the system first starts running.
UV lights must be maintained once every five years. Even though the light may still be on and visible, the effectiveness of the UV light declines drastically after the recommend useful life expectancy of 5 years on the LED (1-2 years old models) and the bulb should be replaced at the manufacturer’s frequency. See the user manual or ask your technician at Efficient AC, Electric & Plumbing for more information on bulb life.
What is the difference between a UV light and a REME-HALO?
UV lights (or stick lights as there are often referred) only prevent mold and bacteria growth on the evaporator coil itself. The REME HALO® in-duct air purifier utilizes proprietary technology. Installed into the supply plenum of your existing air conditioning or heating system air ducts, the REME HALO® in-duct air purifier produces Hydro-Peroxide plasma that is distributed through the air handler, through the duct system and into the conditioned living space. Unlike passive air technologies, which need pollutants to pass through the unit for purification or filtration, the REME HALO® in-duct air purifier affect the entire volume of air that passes through the duct system actively purifying pollutants at the source. In addition, the charged plasma induces particles that coagulate or stick together making them bigger and easier for your filter to catch. Hydroperoxides occur naturally in the earth’s atmosphere and are part of nature’s process of cleaning the air. We at Efficient AC, Electric & Plumbing use a two fold approach and recommend installing both a stuck light in the coil and a REME-HALO type of light in the supply side of the duct system.

What are hydroperoxides?
Hydroperoxides are not the same as ionization. Hydroperoxides occur naturally in the environment and are not considered a health risk at normal levels. Uncontrolled ozone production or ionizing filters can have lasting health effects.

For an in depth article regarding hydroperoxides and oxidation, please refer directly to RGF’s website.
For your safety, do not look directly at a UV light when activated, as this can cause severe eye damage.
Why should you let Efficient install your UV light
Efficient AC, Electric & Plumbing trained technicians are the best choice for installing UV lights. Some customers have tried to purchase UV lights or REME-HALO services online only to find out later, that only lights purchased and installed by licensed contractors carry the factory warranty. All lights purchased directly do not come with ANY warranty.
A UV light is only a part of the process to improving the air quality of your home or business. It is also important to keep filters clean, replace filters regularly, use the highest MERV rated filter that your system is able to accommodate (your qualified Efficient HVAC service technician can assist with recommendations) and make sure your entire duct system is properly sealed through routine inspections.

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