AC Maintenance and Tune-Ups in Ypsilanti and Southeast Michigan

Almost every emergency AC call we run in July traces back to something a spring tune-up would have caught in May. A run capacitor reading 30 percent under its rating. A condenser coil packed with cottonwood fluff from the first week of June. A condensate drain half-clogged with algae that will finish clogging on the hottest, muggiest weekend of the year. A contactor with pitted points that is going to weld shut. None of these are dramatic in April, and all of them take a house down in July when every HVAC truck in Washtenaw County is already spoken for. AC maintenance is how you stop being that call.

Our tune-up is a measurement-based service, not a checklist walk-around. We pull the condenser top and wash the coil from the inside out, because the fins load up with cottonwood, grass clippings and dryer lint on the side of the house and a dirty coil raises head pressure and shortens compressor life. We test the capacitor with a meter and compare it to the nameplate, read amp draw on the compressor and both motors, check the contactor, tighten the lugs in the disconnect, and verify the charge with superheat and subcooling instead of just reading a pressure. Inside, we inspect the evaporator coil where we can reach it, flush the condensate line, test the float switch, check the blower wheel and filter, and measure the temperature split across the coil with the system running.

Southeast Michigan has its own maintenance problems. Humid summers mean the condensate line is the most common failure point in the whole system, especially in the finished basements common across Ypsilanti Township, Canton and Pittsfield where a backed-up drain ruins carpet before anyone notices. Cottonwood season in late May and early June is brutal on condenser coils along the Huron River corridor. And a system that sits idle from October to May gives mice seven months to chew the low-voltage wiring at the condenser, which we check every spring because it is a cheap fix in April and a no-cooling call in July.

A tune-up is also the honest moment to tell you where the system stands. If the capacitor is weak we replace it on the spot with your approval, usually for a modest flat rate. If the charge is low we tell you there is a leak and what finding it involves rather than topping it off and seeing you next year. If the unit is 18 years old on R-22 and the coil is starting to go, we tell you that so you can plan a replacement on your schedule instead of in the middle of a heat wave. Maintenance customers get priority scheduling when things do go wrong, and our service agreement bundles the spring AC visit with the fall furnace visit for one price.