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Sizing a furnace for a house in Armstrong County starts with what the climate actually demands, and the weather record here is not a mild one. 162 severe weather events were recorded in Armstrong County, Texas between 2015 and 2024. At that rate, severe weather is a standing condition for every system in this county, not an occasional disruption. A contractor quoting installation work here has to build that load into the sizing calculation from the start, because a unit that fits the square footage on paper can still be undersized for what this climate puts it through across a heating season.
Ductwork laid down for older equipment carries assumptions about airflow, trunk sizing, and branch runs that a modern furnace does not share. Half the homes in Armstrong County, Texas were built in 1965 or earlier (2020-2024 ACS 5-year). A contractor pricing a furnace installation here has to assess whether the existing duct layout can handle the static pressure and delivery pattern of a new unit before the equipment selection means much. If it cannot, the sheet metal work becomes the larger part of the job. The electrical service gets the same look, since the draw of a new furnace and its air handler may not match what the panel was wired to feed.
What Gets Installed With a New Furnace
The furnace itself sits in a utility room, basement, or garage and is the unit that generates heat. A burner assembly inside it burns fuel to produce heat, and a heat exchanger transfers that warmth to the air moving through the system. The blower motor, housed in the same cabinet, pushes that heated air out toward the rest of the house.
The flue pipe runs from the furnace to an exterior wall or the roof, carrying combustion gases out of the house. Alongside the furnace, a contractor installs the gas line connection, the electrical hookup, and the thermostat, which mounts on an interior wall and tells the furnace when to fire and when to stop.
The drawing shows a general layout of these components, and a licensed contractor determines what the configuration looks like in your specific home.
Get matched in Armstrong CountyArmstrong County, Texas, by the numbers
162 severe weather events were recorded in Armstrong County, Texas 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 Armstrong County, Texas were built in 1965 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesArmstrong County, Texas holds 886 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 80.2% of the occupied homes in Armstrong County, Texas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules for Armstrong County, Texas5 codes, standards, and licensing rules
What the Installation 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.
What Texas and Armstrong County Require for This Work
In Texas a person may not engage in air conditioning and refrigeration contracting unless that person holds a license issued under the state air conditioning and refrigeration contractor law.
Severe Weather Events in Armstrong County
Weather puts hours on heating and cooling equipment. What a furnace faces in Armstrong County shapes what a contractor installs and how it is sized.
162 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.