Blue shield club heating maintenance. Joe(JC)Ritchal. 01/31/2024 Performed full system evaluation and safety inspection. I arrived from the customers annual heater maintenance. The customer said that the system was operating well and she didn’t have any complaints. She did ask what temperatures the heat pump would work in. I told her that it should work into the upper 30s but may have issues in the lower 30s and definitely in the 20s. We should also note for the future that the customer just had new carpets put in and we need to make sure we’re wearing carpet savers so we don’t track in dirt or mud. I checked the air handler and the heat pump system both in the standard heat pump mode and with the electric back up heat. I also change the filters for the customer. The evaporator coil was slightly dirty which I showed the customer. The customer doesn’t want it cleaned at this moment and will have it done later.