AC Repair in Leonardtown, MD
Air conditioners here run from June through September. If yours quits, tell us what it's doing and a licensed contractor who covers St. Mary's County will get in touch.
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Four months of hard running in St. Mary's County heat
Your air conditioner in Leonardtown gets four months of real work, June through September, with afternoons averaging 86°F. That kind of steady heat means the compressor runs long hours day after day, and the system rarely gets a break to cool down before it has to start again.
St. Mary's County also sees its share of rough weather. Ten years of storm records show 146 damaging wind events and 25 hail events, with hail up to 1.75 inches. Wind can bend the fins on your outdoor unit or knock debris into it, and hail that size can dent the cabinet or damage the coil underneath. If your air conditioner is blowing warm air or the outdoor unit is making noise it didn't used to, the summer heat or a past storm may be the reason.
- 4 months
- June through September, your air conditioner is on duty
- 86°F
- the average summer afternoon it cools against
- 25 hail events
- in ten years, and hail bends the fins on outdoor coils
- 146 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 St. Mary's County home.
Estimates for a typical St. Mary's 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.
The state board tests contractors before they can hold this license, and it keeps a record of who holds one. That license belongs to the contractor, not to any single job, so the same license that covers a new installation covers a repair call on your air conditioner.
Your repair means someone is likely opening the refrigerant side of the system, and federal law requires EPA Section 608 certification for that regardless of what state you're in. In Maryland, the contractor doing that work also needs to hold the state HVACR license.
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. A refrigerant leak will also do it, and so will a coil that has iced over from restricted airflow. If the air is weak but cool, check the filter first. If the air is warm or barely moving at all, that points to the refrigerant side or the compressor, and a contractor will need to open the system to find out which, since that work requires EPA certification.
- Why is my AC leaking water?
- Water around your unit usually means the condensate drain line is clogged. Algae and dirt build up in that line over a cooling season and block the path the water normally takes outside. It can also mean the coil has frozen and is now melting, which points back to an airflow problem like a dirty filter. Either way, water pooling near the indoor unit is worth having looked at before it reaches the floor or the ceiling below it.
- Why won't my AC turn on?
- Start with the thermostat. Check that it has power, is set to cool, and the temperature is set below the room temperature. If the thermostat looks fine, check the breaker, since a tripped breaker will shut the whole system down. Leonardtown sees frequent damaging wind, and a breaker that trips repeatedly after storms is worth having a contractor check rather than resetting it over and over.


