Fall pm On 11/04/19 On arrival set unit to call for heat measured supply and return air temp measured voltage and amps inspected electrical connections checked condenser drain and cleaned checked filter customer doesn’t have one I suggested to replace it now to avoid future problems I sell one from the truck and replaced checked blower motor checked coil checked EWP and LWP also water temp checked all other electrical connections unit tested unit operating normal at this time. Recommended duct cleaning and UV lights installation also single or hole house surge protector needs to be installed to avoid future problems Collected $63.75 for aprilaire air filter model #413 on C.C