UV Light Systems in HVAC: Are They Worth the Investment?

Rob Moran
November 2, 2024

In recent years, UV light systems for HVAC units have gained popularity as an additional layer of air purification. But with prices ranging from $400 to $1,500 installed, many homeowners wonder if these systems are worth the investment. Let's explore the science, benefits, and considerations behind UV light technology in HVAC systems.

UV light systems work by exposing airborne microorganisms to ultraviolet radiation, which disrupts their DNA, effectively neutralizing harmful bacteria, viruses, and mold spores. When properly installed in your HVAC system, UV lights can reduce the concentration of airborne pathogens by up to 90%, according to studies by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).

The benefits of UV light systems extend beyond air purification. These systems can help prevent mold growth on air handler coils, improving system efficiency and reducing maintenance needs. This can lead to lower energy bills and extended equipment life. Additionally, cleaner coils mean better heat transfer, which can improve your system's overall performance.

While the initial investment may seem significant, many homeowners find that UV light systems pay for themselves through reduced maintenance costs and improved system efficiency. The typical lifespan of a UV bulb is 9,000 to 12,000 hours (about one year of continuous operation), with replacement bulbs costing between $100-$250. At RM Mechanical, we recommend factoring in these ongoing maintenance costs when considering installation.

For homes with family members who have respiratory issues, compromised immune systems, or severe allergies, UV light systems can be particularly valuable. Contact RM Mechanical for a consultation to determine if a UV light system is right for your home and HVAC setup.