Do they maintenance on a Lennox heat pump. While starting up the heater I went to the heat pump outside and check the temperatures and pressures which all were in line with the spec sheet on the door of the heat pump. After that I crank the heat up hard to check the emergency heat and the amperage on the heat pack was a in line with the air handler spec sheet. After that I did a drain test from the evaporator coil everything was draining fine the condensate pump was very loud and does seem like it will fail soon. I will be recommending a new condensate pump will need to return I do not have one on my truck. Also shop vac to blower motor and dusted off all the electrical components in the air handler also checked supply and return Temperature. Also changed out to 20 x 24 by one filter system is running properly at this point. M#CBX32MV-048-230-6-06 s#1612K05258.