Most quality lamps will emit at least 80% of their original UV-C emission within a year. As with any lamp in your home, the UV bulb will need to be replaced at some point. The specific lifespan of a UV bulb will depend on the type of system and the manufacturer's recommendations. Generally speaking, a UV bulb will last between 1 and 5 years.
A “blue tube” system bulb usually lasts 1 to 2 years, while the APCO or APCO X bulb is expected to last more than 3 to 5 years. The only downside is that working with UV lights can be dangerous, so it is best to hire a professional to install them or take some safety precautions if you decide to do it yourself.
HVAC UV
lights are relatively affordable, especially compared to air filtration systems, such as purifiers and air filters. HVAC UV lights are also good for limiting mold growth throughout the HVAC system and preventing certain respiratory diseases.We recommend installing a UV light system designed to disinfect the air in the return air duct of your air controller. Once installed, UV lights require very little maintenance and only need attention when they need to be cleaned or replaced. If you don't replace a burned-out UV bulb, you won't be able to take advantage of the benefits that UV light can provide in your home. Most HVAC UV lamps are designed to be able to draw power from the fan, so that they only work when the air controller is turned on. It is important to ask your HVAC technician how to check the UV bulb during the installation or maintenance appointment for instructions that are more specific to your application.
It is also essential to ensure that it is impossible to see the UV lamp once it is installed in the air conditioning system.