Mercersburg is a historic borough on the western side of Franklin County, best known as home to Mercersburg Academy. The town’s streets are lined with older stone, brick and frame homes, and the roads out of town lead through farmland toward the ridges along the county’s western edge.
This is the part of the service area where long driveways, older farmhouses and outbuildings come with the territory. Heat Cool and Happy covers Mercersburg and the communities named on its service list, including Fort Loudon, Saint Thomas, Lemasters and Dry Run.
Common Mercersburg jobs
- Oil furnace service and replacement
- Mini splits for farmhouse second floors
- Garage and workshop heaters
- Central air for older homes
What’s different in Mercersburg
Know the house before the system.
Farmhouse heat
Older farmhouses often have oil heat and no ductwork upstairs. A new oil furnace, a heat pump with backup, or mini splits for the second floor can all fit, depending on the house.
Shops and garages
Workshops and garages out here get used year-round. Mini splits, infrared and gas-fired garage heaters each suit different uses.
Fuel safety
If you smell fuel oil inside, have the fuel line and tank checked promptly. If you smell gas or propane, leave the house and call the supplier or 911 from outside.
Mercersburg questions
HVAC in Mercersburg, answered.
More answers on the HVAC questions page.
Smell gas? Leave the house, don’t flip switches, and call your gas utility or 911 from outside.
CO alarm going off? Get everyone out and call 911.
No heat in freezing weather? Call or text 240-818-5824. Never use an oven or a grill indoors for heat.
Do you serve Mercersburg and the western end of Franklin County?
Yes. Mercersburg, Fort Loudon, Saint Thomas, Lemasters, Dry Run, Fannettsburg and Spring Run are all on the Heat Cool and Happy service list.
Can a stone farmhouse get air conditioning without ducts?
Yes. Ductless mini splits are made for houses like this. One outdoor unit can run several indoor units, and the connecting lines are small, so there’s no need to cut chases through thick walls.
How do I know my oil furnace is near the end?
Signs include burning more oil for the same heat, soot around the furnace, a burner that keeps resetting, rust or staining on the tank, and an age of 15 to 20 years or more.