Aerial view of a residential air conditioning condenser unit mounted on a concrete pad next to a house with vinyl siding and a sliding glass door.

AC Maintenance in St. Joseph, MO

Air conditioners here run from June through September, so May is the time for a tune-up. Tell us about your system, and a licensed contractor who covers Buchanan County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment

What kind of equipment?*

Overhead view of an air conditioning condenser unit on a concrete pad next to a house with asphalt shingle roofing and vinyl siding.

Four months of hard running in St. Joseph heat

Your air conditioner in St. Joseph only has to work June through September, but those afternoons average 86°F, and the compressor runs long hours to keep the house cool. A system that sits unused most of the year still has to start up strong the moment summer arrives.

Buchanan County has logged 24 hail events and 72 damaging wind events over the past ten years, with hailstones as large as 2.75 inches. Hail that size can bend the fins on an outdoor coil, and high wind can drive debris into the cabinet. A tune-up checks the coil and the cabinet for that kind of damage before the heat asks the system to run flat out.

4 months: June through September, your air conditioner is on duty
86°F: the average summer afternoon it cools against
24 hail events: in ten years, and hail bends the fins on outdoor coils
72 wind events: in ten years, and wind drives debris into outdoor units

Isometric illustration of a cutaway single-story house showing attic ductwork, an indoor air handler, interior rooms with furniture, and an outdoor condenser unit connected by lines, on a white background.

Your air conditioner works hardest from June through August.

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NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit mounted on a concrete pad next to a blue-sided residential house at sunset.

Book your AC tune-up in May, before homes here start needing cooling in June.

A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.

What does AC maintenance include?: A technician checks refrigerant pressure, cleans or replaces the filter, and clears the condensate drain so it isn't clogged. They'll also check the coil for dirt, test the capacitor and contactor, and make sure the outdoor fan and compressor are running the way they should. Part of the visit is just looking for wear before it turns into a breakdown, like a failing capacitor or a coil caked with dust.
How often does an air conditioner need maintenance?: Once a year, before the season it works hardest. Here that means getting it checked before June, since the system runs from June through September with afternoons averaging 86°F. A yearly check catches small problems while they're still small, rather than in the middle of a hot week when the system quits.
Is AC maintenance worth it?: Yes, because it catches problems before they cause a breakdown. A dirty coil, a low refrigerant charge, or a weak capacitor all make the system work harder without cooling the house any better, and any of them can leave you without air conditioning on the hottest days. This area has seen 72 damaging wind events and 24 hail events over the past ten years, so it's also worth having someone look over the outdoor unit each year for dents or bent fins a storm may have left behind.

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