I myself don't have a lot of experience with these lights. Here's a snippet from ACHR News that supports the possibility of damage.
"UV-C will Impact all Materials in an HVACR System Equally: Myth
There are many different materials found in HVACR systems, from metal to plastic to synthetic media, and all are impacted differently by UV-C. While metal is impervious to UV-C energy, plastic and synthetic media (filters) can be affected. Applying aluminum tape to plastic materials (electrical wires) will protect them from direct exposure. Likewise, UV-C lamps should not be installed in such a way as to expose synthetic filters typically found in residential and commercial HVACR systems to the UV-C energy".
"UV-C will Impact all Materials in an HVACR System Equally: Myth
There are many different materials found in HVACR systems, from metal to plastic to synthetic media, and all are impacted differently by UV-C. While metal is impervious to UV-C energy, plastic and synthetic media (filters) can be affected. Applying aluminum tape to plastic materials (electrical wires) will protect them from direct exposure. Likewise, UV-C lamps should not be installed in such a way as to expose synthetic filters typically found in residential and commercial HVACR systems to the UV-C energy".