AC Maintenance in Chicago, IL
Air conditioners here run from June through August, so May is the time for a tune-up. Tell us about your system, and a licensed contractor who covers Cook County will get in touch.
Tell us about the job
It takes about a minute.
Three months of heavy work, then a long stretch of standing still
Your air conditioner in Cook County earns its keep in a short window. June through August, with afternoons averaging 82°F, it runs long hours to keep the house cool. Then it sits idle the rest of the year, and a unit that sits picks up dust in the coil and rust on the parts that count.
Cook County has also logged 171 hail events and 548 damaging wind events over the past ten years, with hail up to 2.75 inches. The outdoor unit takes that weather straight on. A tune-up checks the fins on the outdoor coil for damage, tests the capacitor and contactor, and confirms the refrigerant charge is right before the next stretch of 82-degree afternoons asks everything of it.
- 3 months
- June through August, your air conditioner is on duty
- 82°F
- the average summer afternoon it cools against
- 171 hail events
- in ten years, and hail bends the fins on outdoor coils
- 548 wind events
- in ten years, and wind drives debris into outdoor units
NOAA nClimDiv, 1991–2020 normals
Book your AC tune-up in May, before homes here start needing cooling in June.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.
In Illinois, HVAC licensing for homes is left to the cities and towns.
In Cook County, whether a contractor needs a license depends on the city or town the house sits in, not on any state rule. Chicago and many suburbs run their own licensing programs, so the contractor working on your air conditioner may be licensed by your municipality, or may not be, depending entirely on the local ordinance where the house is. There is no state list to check.
What is not local is the refrigerant side of the job. Any technician who opens the refrigerant lines on your air conditioner, for a leak, a recharge, or anything else touching that side of the system, has to hold EPA Section 608 certification, and that rule holds everywhere in the country. Routine maintenance like a coil cleaning or a filter check does not require opening the refrigerant side, so it does not call for that certification. Whether a license is required beyond that comes down to the city or town where the house is.
Source: Illinois General Assembly
- What does AC maintenance include?
- A technician checks the refrigerant charge, cleans the outdoor coil, and tests the capacitor and contactor in the condenser. Inside, they check the evaporator coil and the drain line, since a clogged drain line is one of the more common reasons an AC stops cooling. They also check the filter and look at electrical connections for wear. This kind of check catches a weak part before it fails on a hot afternoon.
- How often does an air conditioner need maintenance?
- Once a year is enough for most homes. The best time is in spring, before the cooling season starts in June. Chicago only needs cooling for about three months, June through August, so getting the unit checked before that stretch begins means it is ready when the heat hits.
- Is AC maintenance worth it?
- Yes, because it catches small problems before they become breakdowns. A weak capacitor or a dirty coil puts strain on the compressor, and the compressor is the most expensive part to replace. With summer afternoons here averaging 82°F, a unit that is not running right will struggle to keep up, and a yearly check is what keeps it from failing when you need it most.