Upon arrival spoke with customer. I explained what I would be doing and got started. Switched out fuse and started checking over system. Blower came on, heat strips are working properly. Unit inside came on good. Went outside, contacter and capacitor checked within specs. Fan and compressor amped within specs. Refrigerant levels are within manufacturing specifications. Let system run awhile and house is already up to 68° from 63°. Set for 71°. Customer is happy at this time.