AC Repair in Oshkosh, WI
Air conditioners here run from June through August. If yours quits, tell us what it's doing and a licensed contractor who covers Winnebago County will get in touch.
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Three months of heat, then nothing to do
Your air conditioner in Oshkosh works hard for about three months, June through August, with afternoons averaging 80°F. Then it sits idle the rest of the year. That start-stop pattern, long stretches of rest followed by a hard push in summer, is when a weak capacitor or a low-charge system tends to show itself. It runs fine in a mild spring, then can't keep up the first hot week of June.
Winnebago County has also seen 54 damaging wind events and 16 hail events over the past ten years. Hail up to an inch can bend the fins on your outdoor unit's coil, and high winds can knock debris into it or rock it on its pad. Either one restricts airflow across the coil, and the system has to work harder to cool the same air.
- 3 months
- June through August, your air conditioner is on duty
- 80°F
- the average summer afternoon it cools against
- 16 hail events
- in ten years, and hail bends the fins on outdoor coils
- 54 wind events
- in ten years, and wind drives debris into outdoor units
NOAA nClimDiv, 1991–2020 normals
A new air conditioner would save little on running costs in Winnebago County, so the repair decision comes down to the unit's condition.
Estimates for a typical Winnebago County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Wisconsin fuel prices and NOAA climate normals. Your home will differ.
Repair makes sense when a part like a capacitor or contactor has failed.
Replacement makes sense when the compressor has failed or the system uses R-22 refrigerant, which is no longer made.
Wisconsin requires contractors to register with the state.
That registration puts the business on file with the Department of Safety and Professional Services. Nobody tested the contractor's work to get that number, and the state does not license the trade. Winnebago County cannot add its own license on top of this, since Wisconsin does not let counties or cities set their own HVAC licensing rules. So the registration is the only state record that exists here.
For a repair on your air conditioner, the protection that actually applies is federal. Any technician who opens the refrigerant side of your system, to recover it, recharge it, or get to a failed part behind it, has to hold EPA Section 608 certification. That requirement holds in every state, Wisconsin included, and it is the one credential tied to this specific job.
Sources: Wisconsin Legislative Reference Bureau · Wisconsin Department of Safety and Professional Services
- Why is my AC not blowing cold air?
- Most often the filter is clogged and starving the system of airflow. A dirty filter makes the evaporator coil so cold it freezes over, and then all you get is room-temperature air or none at all. Low refrigerant from a leak causes the same freezing problem, but that's not something you can fix by swapping a filter. If the air is warm right from the vents, check the filter first before assuming it's something bigger.
- Why is my AC leaking water?
- The drain line is probably clogged. Your AC pulls moisture out of the air and that water is supposed to run out through a condensate drain, but algae and dirt build up in that line over time and block it. When it backs up, the water finds another way out, usually through the ceiling below the unit or around the indoor equipment. A frozen coil that's now thawing will also leak water as it melts, so if the system was just running with warm air coming out, that could be why.
- Why won't my AC turn on?
- Start with the thermostat. Check that it's set to cool and the temperature is below the room temperature, and make sure it has power if it runs on batteries. If the thermostat looks fine, check your breaker panel. Oshkosh sees a fair number of damaging wind events, and a tripped breaker after a storm is a common reason a unit sits dead. If the breaker hasn't tripped and the thermostat is set right, the problem is inside the unit and a contractor will need to look at it.