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Sizing a heat pump for this county means solving a problem that shows up at the cold end of the heating season, when capacity drops and a system that was marginal at install becomes inadequate. Homes in Prince George's County, MD run heat about seven months a year, from October through April. A contractor has to run a load calculation against the actual house before quoting any equipment: the envelope, the insulation, the windows, and what back-up resistance heat the service panel will carry. Get that calculation wrong and the compressor runs longer at lower output, which puts the most stress on it during the coldest stretches.
Ductwork sized for a furnace-and-central-air setup does not automatically carry a heat pump's airflow the same way, and in Prince George's County a large share of the housing was built to exactly that older standard. Half the homes in Prince George's County, Maryland were built in 1977 or earlier (2020-2024 ACS 5-year). A heat pump moves a different volume of air than what those ducts were originally designed around, so a contractor's first job is to assess whether the existing system can handle it. That assessment shapes the quote more than the unit selection does.
What Gets Installed With a New Heat Pump
The outdoor unit is the piece most homeowners notice first. It sits on a pad beside the house and holds the compressor and the outdoor coil, which together do the work of pulling heat from outside air. Inside, the air handler mounts in a utility space, basement, or closet and pushes conditioned air through the home.
A refrigerant line set runs between the two units, carrying refrigerant back and forth through insulated copper tubing that passes through the wall. A thermostat goes on an interior wall where it reads the home's temperature and tells the system when to run.
The drawing shows the general layout of these components, and a licensed contractor determines exactly how each one fits the conditions of your particular house.
Get matched in Prince George's CountyPrince George's County, by the numbers
251 severe weather events were recorded in Prince George's County, Maryland between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Prince George's County, Maryland were built in 1977 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesPrince George's County, Maryland holds 365,506 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 62.3% of the occupied homes in Prince George's County, Maryland (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesHeat Pump Installation Rules for Prince George's County, Maryland1 codes & standards
Licensing and Legal Requirements in Prince George's County, Maryland
Maryland requires a state licence before an individual provides, or assists in providing, heating, ventilation, air-conditioning or refrigeration services.
Severe Weather Events in Prince George's County
Weather in Prince George's County puts real demands on heating and cooling equipment, and those demands shape what a heat pump here needs to handle year after year. Sizing and installation decisions are local decisions, and the record of what this county sees is part of that picture.
251 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.