Main level unit. Clean drain. Changed filter. Clean flame sensor. Check the electronic components. Checked amps on draft induced motor and blower motor. Both test fine. Fix insulation around line set. furnace running as it should. Master bedroom unit. clean drain. Clean flame sensor. Changed filter. Fix insulation around line set. Checked amps on draft inducer motor and blower motor. Both test fine. Checked all electronic components. All safety switches. Furnace running as it should. Basement unit. Clean drain change filter. Checked all electronic components. Checked amps on heat strip and blower motor. Both test fine. Checked amps on compressor. And outside fan. Both test fine. Heat pump As it should.