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A contractor quoting a furnace install in Murray County works out the heating load from the structure first: insulation, square footage, window placement, duct layout. 55 severe weather events were recorded in Murray County, Georgia between 2015 and 2024. At that rate, severe weather is a real but occasional variable, and it does not drive the sizing decision the way it might in a county where storms are constant. What sets the spec here is how hard the house asks the furnace to run on a cold night, and that answer comes from what the building actually is.
Ductwork sized and routed for an older heating system often cannot carry a modern furnace's airflow without pressure problems, hot spots, or equipment short-cycling. Half the homes in Murray County, Georgia were built in 1993 or earlier (2020-2024 ACS 5-year). A contractor quoting a furnace here will measure the existing duct runs, check the trunk sizing, and decide whether the distribution system serves the new unit or fights it. That answer shapes the scope of the job before the furnace itself is even selected.
What a Furnace Installation Puts in Your Home
The furnace itself sits inside the house, most often in a basement, utility room, or closet, and it is the unit that produces the heat. A flue pipe runs from the furnace to an outside wall or up through the roof, carrying combustion gases out of the house. These are the two pieces a homeowner is most likely to see or notice.
The air handler and blower assembly move conditioned air into the supply side of the duct system, and in many installations a separate air filter housing sits at the return-air inlet where it can be reached for servicing. A thermostat mounts on an interior wall and is the control point for the whole system.
The drawing shows a general layout of these components, and a licensed contractor determines exactly what applies to your house and its existing setup.
Get matched in Murray CountyMurray County by the Numbers
55 severe weather events were recorded in Murray County, Georgia 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 Murray County, Georgia were built in 1993 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesMurray County, Georgia holds 16,241 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 73.8% of the occupied homes in Murray County, Georgia (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Furnace and HVAC Installation in Murray County, Georgia4 sourced rules and standards
What the Installation Actually Looks Like
Non-weatherized gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized oil-fired furnaces manufactured on or after November 19, 2015 must reach 83.0 percent AFUE.
Mobile home gas furnaces manufactured on or after November 19, 2015 must reach 80.0 percent AFUE.
Non-weatherized gas furnaces manufactured on or after December 18, 2028 must reach 95.0 percent AFUE, up from the 80.0 percent minimum that applies to units manufactured before that date.
Severe Weather Events in Murray County
Weather puts real demands on heating and cooling equipment, and those demands vary by place. A furnace sized and installed for local conditions holds up better than one specified without them.
55 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.