How Much Does a New Furnace Cost in Texas?

New furnaces in Texas typically cost $2,800 to $7,500 installed, with most Weatherford and Parker County homeowners landing in the $3,500 to $5,500 range depending on home size, fuel type, and efficiency. CB Air Conditioning and Heating installs and replaces furnaces across North Texas and breaks down what moves that number below.

A homeowner in Springtown called us in December after their 17-year-old gas furnace finally quit, right before a cold snap pushed overnight temps into the low 20s. They'd had it repaired twice in the past three years and figured one more fix would get them through. What they found instead was a heat exchanger that had cracked through and an aging system that was no longer worth saving.

CB AC and Heat helped them select a replacement the same week, and they haven't thought about their furnace since. If you're researching costs before you're in that situation, this guide gives you the honest numbers and the decisions behind them.

What Drives New Furnace Cost in Texas?

Several variables move the price on a furnace installation. Understanding them helps you evaluate quotes accurately.

Equipment Size and Efficiency

The biggest factor is equipment size and efficiency. A standard 80% AFUE (Annual Fuel Utilization Efficiency) gas furnace runs $1,200 to $2,500 for the unit alone. Step up to a 96% AFUE two-stage or modulating system and that equipment cost rises to $2,000 to $4,000 before labor.

AFUE measures how much of the fuel your furnace actually converts to heat. An 80% unit loses 20 cents of every dollar up the flue, while a 96% unit loses only 4 cents. The difference shows up on your gas bill every winter.

Labor, Ductwork, and Permits

Labor and installation materials add $800 to $1,500 in most North Texas jobs. Homes with older ductwork—particularly pre-2000 builds in Parker County where slab shifts have opened duct joints over time—sometimes need duct modifications before a new furnace performs correctly. Factor in $300 to $800 if your ducts need attention. Permits are required for furnace replacement in most jurisdictions and typically run $75 to $150.

Replacing Furnace vs. Full System

Furnace repair and replacement costs also vary based on whether you're replacing just the furnace or the whole heating system together. Bundling the job can reduce total labor costs when both units need work.

Gas Furnace vs. Heat Pump: What North Texas Homeowners Are Choosing

Texas winters are short but they aren't gentle. Winter Storm Uri in February 2021 proved that North Texas can see sustained freezing temperatures that push heating equipment hard for days at a time.

Gas furnaces remain the dominant choice in Parker County because natural gas is widely available and delivers strong heat quickly. That's important when you need to bring a cold house up to temperature fast. A gas furnace produces supply air in the 120 to 140°F range, which heats a space noticeably faster than most heat pump systems.

Heat pumps are increasingly popular for their efficiency in mild weather, but their performance drops significantly when outdoor temps fall below freezing. A heat pump without a backup electric resistance strip will struggle during a North Texas cold snap. Hybrid systems (a heat pump paired with a gas furnace backup) handle both scenarios well and are worth exploring if your current ductwork supports one. Our Fort Worth and Parker County homeowners increasingly ask about this option as utility rates fluctuate.

Efficiency Ratings and Long-Term Cost

Choosing a higher AFUE furnace costs more upfront but reduces monthly operating costs throughout its lifespan.

The U.S. Department of Energy sets a minimum AFUE of 80% for gas furnaces in the southern U.S., which includes Texas. Most homeowners in Weatherford and the surrounding area are replacing systems that fall into the 78 to 80% range. Upgrading to a 95 to 96% unit can meaningfully reduce gas consumption compared to a baseline 80% system, a significant number over a 15 to 20-year equipment life.

Two-stage and modulating furnaces also run at lower output most of the time, which improves indoor comfort and reduces temperature swings. They cost more upfront but deliver a noticeably quieter and more consistent heating experience.

Review your AC replacement cost at the same time. Many homeowners choose to replace both units together to align equipment age and maximize labor efficiency.

Frequently Asked Questions

How long does a furnace last in Texas?

Gas furnaces generally carry manufacturer ratings of 15 to 20 years. The shorter end of that range is common in homes where the furnace runs hard during winter cold snaps and restarts frequently. Annual maintenance extends the furnace's service life and catches failing components before they cause a no-heat emergency. CB AC and Heat recommends a heating tune-up each fall before the season starts.

Is a permit required for furnace replacement in Texas?

Yes, most Texas jurisdictions require a permit for furnace replacement. In Weatherford and Parker County, permits ensure the installation meets local building codes covering gas line connections, venting, and combustion air. CB Air Conditioning and Heating handles permit coordination as part of every installation so you don't need to manage that process separately.

What size furnace does a Texas home need?

Furnace sizing is based on a Manual J load calculation, not square footage alone. North Texas homes typically need 35 to 45 BTUs of heat output per square foot, but ceiling height, insulation quality, window count, and local climate data all affect the result. An oversized furnace short-cycles and wears faster. An undersized one runs continuously without reaching setpoint.

Know the Real Numbers Before You Commit

The right furnace, properly sized and installed, handles North Texas winters reliably for 15 to 20 years. CB Air Conditioning and Heating serves Weatherford, Parker County, and surrounding communities with upfront pricing. You'll know the full cost before any work begins.

Book a system evaluation online or call (817) 341-9505 to get a straight answer on what your home actually needs.