The service technician for Flanders Heating & Air Conditioning while servicing my HVAC system was able to explain everything that he was doing. He explained everything that was wrong and why. He fixed everything that needed fixing and replaced filters and serviced the compressor. Everything is working fine. He answered all of my questions regarding an addition of an ultraviolet light system for the HVAC that would help prevent mold. I look forward to hearing back from them regarding this addition.