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A contractor quoting a furnace installation in Macon County is not walking into a storm-battered environment. 39 severe weather events were recorded in Macon County, Alabama between 2015 and 2024. At that rate, severe weather is an event in this county, not a steady operating condition, so what shapes a proper install is how the house is built, how the existing ductwork runs, and what the previous system revealed about load requirements over its life. A furnace that was undersized or poorly sealed when it went in will fail on those terms, and the weather record here does not change that calculation.
Ductwork designed for an older generation of furnaces carries assumptions about airflow, return placement, and trunk sizing that a modern unit does not share. Half the homes in Macon County, Alabama were built in 1979 or earlier (2020-2024 ACS 5-year). A contractor installing a new furnace in a house from that era has to assess whether the existing duct system can deliver what the new equipment requires, and that assessment shapes the whole job before a single component is ordered. If the ductwork cannot move enough air, the furnace runs harder and shorter than it should. Getting that right is the work the age of the housing actually creates.
What Gets Installed With a New Furnace
The furnace itself sits in a utility room, basement, or closet and is the unit that produces heat for the house. A contractor mounts the heat exchanger and burner assembly inside that cabinet, connects the gas line, and sets the flue pipe that runs exhaust gases out through the roof or an exterior wall.
The air handler and blower fan move conditioned air from the furnace into the duct system. A contractor also installs the thermostat on an interior wall, wires it back to the furnace, and fits the filter housing where return air enters the unit before it passes through the heat exchanger.
The drawing shows a general layout of these components, and a licensed contractor determines exactly how each one applies to your home.
Get matched in Macon CountyMacon County, by the numbers
39 severe weather events were recorded in Macon County, Alabama 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 Macon County, Alabama were built in 1979 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesMacon County, Alabama holds 9,653 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 61.5% of the occupied homes in Macon County, Alabama (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules for Macon County, Alabama5 codes, standards, and licensing rules
What Happens When the Contractor Shows Up
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.
Licensing Rules for Macon County, Alabama
Alabama requires state certification to do heating, air conditioning and refrigeration contracting: nobody may advertise, bid, pull permits or do the work unless the person in responsible charge is a certified contractor.
Severe Weather Events in Macon County
Weather in this part of Alabama puts real demands on heating equipment, from cold snaps that run furnaces hard to summer heat that shortens the recovery window between seasons. How much stress a system carries over its life is a local fact, and the chart below reflects the conditions contractors in Macon County are sizing and installing for.
39 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.