AC Maintenance in Detroit, MI
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 Wayne County will get in touch.
Tell us about the job
It takes about a minute.
Three months to carry the whole cooling load
Your air conditioner in Wayne County only gets June through August to do its job, and on those afternoons it's working against an average high of 82°F. That's a short, hard stretch. The system runs close to full tilt for three months, then sits idle the rest of the year, which is its own kind of wear. A tune-up before summer checks the parts that sat unused all winter, like the capacitor and the refrigerant charge, so they're ready when the heat shows up instead of failing on the first hot week.
Wayne County has also logged 142 damaging wind events and 23 hail events over the past ten years, with hail up to 1.75 inches. The outdoor unit sits outside through all of that. A service visit is a chance to catch a bent fin or a cracked line before it turns into a system that won't cool at all.
- 3 months
- June through August, your air conditioner is on duty
- 82°F
- the average summer afternoon it cools against
- 23 hail events
- in ten years, and hail bends the fins on outdoor coils
- 142 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.
Michigan requires HVAC contractors to hold a state license.
The Board of Mechanical Rules is the state agency that tests and licenses HVAC contractors in Michigan. That license belongs to the contractor, not to any single job, so the same license covers this maintenance visit and whatever work that contractor takes on next.
For AC maintenance, the part of the job that calls for its own credential is anything involving refrigerant. If the technician opens the refrigerant side of your system to check charge or pressure, federal law requires EPA Section 608 certification to do that, in Michigan and every other state.
Sources: Michigan Legislature · Michigan Department of Licensing and Regulatory Affairs
- What does AC maintenance include?
- A technician checks refrigerant pressure, cleans the condenser coil, and tests the capacitor and contactor in the outdoor unit. Inside, they check the evaporator coil and the condensate drain, since a clogged drain is one of the most common reasons a system stops cooling. They also check the filter and confirm the thermostat is calling for cooling correctly. Spring is the right time, before the system has to run through the summer.
- How often does an air conditioner need maintenance?
- Once a year is enough for most home air conditioners. Spring, before the cooling season starts, is the right time, so any worn part or low refrigerant charge gets caught before the system has to run through summer. Skipping it doesn't always cause a breakdown right away, but it means small problems go unnoticed until the unit is struggling to keep up.
- Is AC maintenance worth it?
- Yes, because most of what causes a summer breakdown, a dirty coil, a weak capacitor, low refrigerant, gets caught in a checkup before it turns into a no-cool call. Detroit summers are short, just three months, so a system that sits idle most of the year is being asked to work hard fast, with little warning before something fails. A contractor can also spot coil damage from hail or debris, which matters here given how often the area sees hail and high wind.