How to Install a UV Light in an HVAC Air Handler

What You'll Need
UV light probes
Tin cutter
Cutter pliers
Duct tape
Standard electric points

The sun is the largest source for purifying the air in the atmosphere, but you can also use an HVAC air handler. Ultraviolet rays (UV rays) suppress the breeding and emergence of bacteria, viruses, fungi, molds and other harmful microbes in the atmosphere. Since this can not normally happen inside your home, you may need to replicate this process using an air handling or air conditioning system by using artificially produced UV rays.

Many manufacturers are now designing their air conditioning systems to include UV lights for air-purification. Modern UV rays lights are designed and installed in the air conditioning to do away with hazards causing sickness. The UV lights act to remove air pollutants, odors, smoke, chemical odors, viruses and mold bacteria contaminating the air. Because most of the problems start from the ducts of these systems, manufacturers install the UV lights in the ducts used for air conditioning as well as heating systems.

When a HVAC (Heating, Ventilating and Air Conditioning) system is in operation, UV lights initiate an advance oxidation process, which includes ozonize ions, hydo-proxides, hydro-oxide ions and super oxide ions. All these oxidizers act in a friendly manner for us and produce back oxygen from the pollutants, thus refreshing the air. Follow the steps below to effectively install a UV light in your HVAC air handler.

Step 1: Selecting the UV Lights

    One set of lights is directly fixed over the AC coil in the duct, and the other one is fixed just before air handler in the return air duct. The most common lights used in the existing systems are Air Probe Sanitizers. These come in various designs and different sizes and can be comfortably placed in any air handling system. These UV probes are provided with standard mountings to install a single or two UV probes.

    As there are numerous different makes, designs, sizes and models of air handler HVAC systems, as a consequence, many manufacturers supply customized lengths for Air Probe Sanitizer and even special spacing to suit a specific air handler.

    You should supply the data of sizes of the ducts, amount of air handled, tonnage and other relevant information to the manufacturers, who will recommend the particular probes and details on installing and spacing them.  

    Step 2: Ordering and Getting the Lights

    You can order the lights according to the recommendation and specifications given by the manufacturers for the best solution.

    Step 3: Making Opening in the Ducts and Fixing UV Lights

    Cut an opening larger than the size of the base of UV mounting in the duct near the position where light is to be installed.

    Step 5: Marking the Positions and Fixing Mounting

    Slide in the housing for the light through the opening. Mark the position of the holes for fixing the screws and for wire connections for housing on the duct by a template. Drill the holes from outside. Pass the connecting lead out from the hole. Position the housing inside and insert the screws from inside and fix with nuts from outside the duct.  Fix the UV probes into the housing.

    Step 6: Closing and Sealing the Duct

    Close the opening in the duct with a tin sheet and seal it with duct tape tightly.

    Step 7: Connecting the Lights and Setting

    Connect your HVAC-UV lights to standard electric outlets. Next, set the thermostat fan setting to on position in place of auto. Switch on the system to make the lights function.