AC & heating repair in Leonardtown, MD: we connect you with top-rated local HVAC pros, checked by our team — their proposals come straight to your Homeshi account. Free for property owners.
In Leonardtown, July highs average about 88°F and January lows about 27°F.
In St. Mary's County, July highs average about 88°F and January lows about 27°F, with roughly 45 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, floods and flash floods in St. Mary's County, with hail up to 1.75 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in St. Mary's County was built around 1990, about 36 years ago, and 34% were built before 1980.
St. Mary's County has had 12 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Severe Winter Storm (2026).
Roof repair in Leonardtown · AC & heating repair in Leonardtown · Plumbing in Leonardtown · Electrical in Leonardtown · Gutters in Leonardtown · Pest control in Leonardtown · Lawn care in Leonardtown · Pool service in Leonardtown · Siding in Leonardtown · Windows & doors in Leonardtown · Solar in Leonardtown · Generators in Leonardtown · Insulation in Leonardtown · Remodeling in Leonardtown · Kitchen remodeling in Leonardtown · Bathroom remodeling in Leonardtown · Painting in Leonardtown · Flooring in Leonardtown · Drywall in Leonardtown · Concrete & pavers in Leonardtown · Fencing in Leonardtown · Decks in Leonardtown · Tree service in Leonardtown · Pressure washing in Leonardtown · House cleaning in Leonardtown · Junk removal in Leonardtown · Garage doors in Leonardtown · Appliance repair in Leonardtown · Water & mold restoration in Leonardtown · Foundation repair in Leonardtown · Handyman in Leonardtown
Book the AC tune-up in spring and the heating check in fall, before the first real heat or cold — repair slots fill fast in a heat wave.
Central AC units usually last 12–15 years and furnaces 15–20; past that, a repair often costs more than it saves.
If the system is over 12–15 years old or needs a major part (compressor, heat exchanger), ask for both prices — the pro sends them on Homeshi so you can compare.
Eagle Harbor · La Plata · Port Tobacco Village · Chesapeake Beach · North Beach · Church Creek · Indian Head · Cambridge