AC Maintenance in Aberdeen, 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 Harford County will get in touch.
Tell us about the job
It takes about a minute.
Four months of hard running, every year
Your air conditioner in Aberdeen works hard for four months, June through September. Summer afternoons here average 85°F, and the unit cycles on and off through that heat for weeks straight.
A tune-up before summer checks the refrigerant charge, the condenser coil, and the electrical connections that keep the compressor cycling properly. Harford County has also logged 329 damaging wind events and 10 hail storms over the past ten years. A loose connection or a low charge does not get better on its own, and finding it before the heat sets in means the unit is not struggling through its busiest months with a problem that was there all along.
- 4 months
- June through September, your air conditioner is on duty
- 85°F
- the average summer afternoon it cools against
- 10 hail events
- in ten years, and hail bends the fins on outdoor coils
- 329 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
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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.
The license is held by the contractor, not issued job by job. The person or company coming to your house in Harford County is the one the Maryland Board of HVACR Contractors has tested and put on record. That covers who is allowed to take on the work in the first place.
For a maintenance visit on your air conditioner, the part that matters most is whether refrigerant gets touched. If the technician opens that side of the system to check the charge or add refrigerant, federal law requires them to hold EPA Section 608 certification. That rule applies in every state. It is separate from the Maryland license, and it covers a different thing. It says the person handling refrigerant was trained to do it safely, not that they are licensed to run the business.
Sources: Maryland General Assembly · Maryland Department of Labor
- What does AC maintenance include?
- A technician checks the refrigerant level, cleans the condenser coil, and tests the capacitor and electrical connections. They also check that the thermostat is calling for cooling properly and look at the condensate drain, since a clogged one backs up water into the house. The filter gets checked too, though that is usually a job for the homeowner between visits. Opening the refrigerant lines requires EPA Section 608 certification, which any qualified technician doing this work will hold.
- How often does an air conditioner need maintenance?
- Once a year, in spring before the cooling season starts. Aberdeen homes run the AC from June through September, so getting it checked before that stretch means problems turn up while there is still time to fix them, not on the first 85°F afternoon in June. A once-a-year check is also what most manufacturers ask for to keep a warranty valid.
- Is AC maintenance worth it?
- Yes. A system that is not maintained loses efficiency slowly, so the change is easy to miss until the electric bill or a breakdown makes it obvious. A yearly check is also when a technician would catch a worn part before it fails during the four months Aberdeen homes actually need the system, June through September. Regular maintenance is what keeps a manufacturer's warranty in effect on most units, too.