What is the difference between a portable UV lamp unit and having a UV lamp unit installed in my HVAC system?

A portable filtration unit with UV technology is a great product for a specific space whereas having a Honeywell UV solution installed in your HVAC system covers your entire home. The whole-house solution cleans the air in every cycle. Plus, because Honeywell's UV products are installed over the coil in your HVAC system (a common place for mold and mildew), your equipment is kept clean and can operate more efficiently.