Tell us about the job
Takes about a minute. No obligation.
Sizing a furnace for this area starts with what the local climate actually demands, and that picture is quieter than many homeowners assume. 39 severe weather events were recorded in Atascosa County, Texas between 2015 and 2024. At that rate, severe weather is an event a system here encounters from time to time, not a sustained load it runs against every season. A contractor quoting an install in Atascosa County is working out heat loss, duct geometry, and equipment fit for a structure, not compensating for relentless storm exposure. What that means in practice is that a poor install, or an undersized unit, will show up in your energy bills and comfort long before the weather gets blamed for it.
Ductwork laid into a house built around that era was designed around equipment with different airflow demands than a modern furnace carries. Half the homes in Atascosa County, Texas were built in 1993 or earlier (2020-2024 ACS 5-year). A contractor sizing a new unit here has to check whether the existing trunk lines and branch runs will move air the way the new system expects, and whether the electrical service can carry the load without a panel upgrade. Those two questions decide more about how the job prices and what the scope looks like than the furnace selection does.
What Gets Installed With a New Furnace
The furnace itself sits in a utility closet, basement, or garage and is the unit a homeowner would recognize on sight. Inside it, the heat exchanger and burner assembly do the core work, while the blower motor pushes conditioned air out into the home. These are the pieces a contractor sets in place first.
The flue pipe runs from the furnace to an exterior wall or roofline and carries combustion exhaust out of the house. The air handler cabinet, the filter housing, and the thermostat wiring tie the system together, with the thermostat mounted on an interior wall where it reads the living space.
The drawing shows a general layout of these components, and a licensed contractor determines exactly what applies to the configuration of your house.
Get matched in Atascosa CountyAtascosa County, by the numbers
39 severe weather events were recorded in Atascosa 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 Atascosa County, Texas were built in 1993 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesAtascosa County, Texas holds 19,214 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.4% of the occupied homes in Atascosa County, Texas (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFurnace Installation Rules on the Books for Atascosa County, Texas5 codes, standards & laws
What the installation work looks like in Atascosa County
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 and Legal Requirements in Atascosa County, Texas
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 Atascosa County
Weather places real demands on heating and cooling equipment, and those demands vary by location. A furnace sized and installed for the conditions in Atascosa County will hold up differently than one that was not.
39 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.