AC Maintenance in Columbia, MD
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 Howard County will get in touch.
Tell us about the job
It takes about a minute.
Four months of hard running in Columbia summers
Your air conditioner works from June through September here, and on an 85°F afternoon it runs long stretches to keep up. The condenser fan and compressor carry that load the whole time, and the wear shows up first in the parts that start the system and keep it running steady.
A tune-up checks the capacitor and contactor before one of them fails on a hot day, and cleans the condenser coil so it can still shed heat outside. It also catches a refrigerant charge that has drifted low, which makes the compressor work harder than it should for the same cooling.
- 4 months
- June through September, your air conditioner is on duty
- 85°F
- the average summer afternoon it cools against
- 14 hail events
- in ten years, and hail bends the fins on outdoor coils
- 177 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
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- Apr
- May
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- Dec
A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.
Maryland requires HVAC contractors to hold a state license.
Maryland licenses the contractor, not the job. The Maryland Board of Heating, Ventilation, Air Conditioning, and Refrigeration Contractors holds that license, and it stands behind every job that contractor takes on, including a maintenance visit.
For maintenance on your air conditioner, the license is what's accountable if the work is done wrong. If the technician opens the refrigerant side of the system to check the charge, federal law also requires them to hold an EPA Section 608 certification, the same rule that applies in every state. That certification is separate from the Maryland license, and it covers the part of the job the state license does not name.
Sources: Maryland General Assembly · Maryland Department of Labor
- What does AC maintenance include?
- A technician cleans the outdoor coil, checks refrigerant charge, and tests the capacitor and contactor in the outdoor unit. They also check the indoor coil, inspect the condensate drain for clogs, and change or check the filter. On the electrical side, they check that the system cycles on and off correctly and that the thermostat is talking to it the way it should. Anyone opening the refrigerant side of your system to check the charge has to hold EPA Section 608 certification, which is a federal requirement everywhere.
- How often does an air conditioner need maintenance?
- Once a year is the standard, done before the season it works hardest. Here that means getting it looked at before June, since your air conditioner runs from June through September and summer afternoons average 85°F. A yearly check catches a weak capacitor or a low charge before it fails on the hottest day instead of during a spring visit when parts are easier to get to.
- Is AC maintenance worth it?
- Yes, because most of what causes a summer breakdown shows up early if someone is looking for it. A dirty coil, a capacitor going weak, or a clogged condensate drain all get worse slowly, and a yearly check catches them while they are still cheap problems. This area has also seen 177 damaging wind events and 14 hail events over the last ten years, including hail up to 1.75 inches, so having someone check the outdoor unit for storm damage each year is worth doing even beyond the routine service.