AC Repair in Dundalk, MD
Air conditioners here run from June through September. If yours quits, tell us what it's doing and a licensed contractor who covers Baltimore County will get in touch.
Tell us about the job
It takes about a minute.
Four months of heat load, then storms the rest of the year
Dundalk summers ask a lot of your air conditioner in a short window. From June through September, with afternoons averaging 85°F, the compressor runs long hours to keep up. That kind of steady load wears on the capacitor and the contactor, the parts that get the compressor started and keep it running. When one of them goes, the unit hums but the compressor never kicks on, or it shuts off on its own after a few minutes.
Baltimore County has logged 314 damaging wind events and 45 hail events over the past ten years, with hail up to 4 inches. Wind can bend the thin fins on your outdoor coil or knock the unit out of level. Hail that size can dent the cabinet and damage the fins enough to block airflow, which shows up as an AC that runs but does not cool like it should.
- 4 months
- June through September, your air conditioner is on duty
- 85°F
- the average summer afternoon it cools against
- 45 hail events
- in ten years, and hail bends the fins on outdoor coils
- 314 wind events
- in ten years, and wind drives debris into outdoor units
NOAA nClimDiv, 1991–2020 normals
A new air conditioner would cut about $50 a year off cooling for a typical Baltimore County home.
Estimates for a typical Baltimore County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Maryland 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.
Maryland requires HVAC contractors to hold a state license.
Maryland tests contractors before it licenses them. The license belongs to the contractor, not to any single job, so it covers whoever is running the business, not each repair they do. The board has a record of that contractor and knows they showed the state they understand the trade. It does not mean anyone checks this particular repair once it starts.
If your air conditioner needs a repair that opens the refrigerant lines, the technician also needs EPA Section 608 certification. That rule comes from the federal government, not Maryland, and it applies the same way in every state. It covers something different from the license. The license says the contractor is allowed to do HVAC work in Maryland. The certification says the person handling refrigerant has been trained to do that safely.
Sources: Maryland General Assembly · Maryland Department of Labor
- Why is my AC not blowing cold air?
- The most common cause is a dirty air filter choking off airflow across the coil. When air cant move through, the coil can ice up and only room-temperature air makes it out the vents. A low refrigerant charge from a leak causes the same thing, and that one only a licensed contractor can check, since opening the refrigerant side requires EPA certification. Check the filter first. If it is clean and the air is still warm, the system needs a technician.
- Why is my AC leaking water?
- Your AC makes water as it cools the air, and that water is supposed to drain outside through a condensate line. If that line clogs, the water backs up and drips inside the house instead, often near the indoor unit. A dirty filter can cause this too, since it lets the coil ice up, and the melting ice overflows the drain pan. Clear the area around the unit and call a contractor before running the system again, since a clogged line will keep backing up until it is cleared.
- Why won't my AC turn on?
- Start with the thermostat. Check that it is set to cool and the temperature is below room temperature, and check the batteries if it has a screen that looks dim. If the thermostat looks fine, check the breaker panel, since a tripped breaker will shut the whole system down with no warning at all. Dundalk sees plenty of summer storms, and 314 damaging wind events over the past ten years have tripped breakers or knocked out power to plenty of homes here. If the breaker is fine and the thermostat is calling for cooling, the system needs a contractor to look at it.