Upstairs unit. Change filter. Clean drain. Checked all electronic components. Checked amps on blower motor and inducer motor. Both Test fine. Check all safety switches. all safety switch test fine. Clean out wash nest out of Inducer motor. basement unit. Change filter. Clean drain. Checked all electronic components. UV like good. Checked amps on inducer motor and blower motor. Both is fine. checked all safety switches. All switches test fine. Clean flame sensor. Fix bent spot on filter rack so filter rack. Will go in and out easy. Bow furnace Working as they should.