When I purchased the heat pump nothing was said about a surge protector, now, 3 years later we talk surge protector. Also, the filter on the attic unit, it was best to purchase the rewashable piece. No, now the throw aways are better. Is this all about money? I am very happy with your service. It is just ironic that my last visit cost me $0, now I need things that were never mentioned before costing big bucks—$730.00. That included the UV light bulb which I knew was going to be replaced. Just needed to voice my concern.