The short answer
A furnace repair in the DFW metroplex typically costs $150 to $600. North Texas 2026 figures from DFW-area invoices put the average repair around $250 to $450, with simple fixes near $100 and major component work past $1,000. A full furnace replacement typically runs $3,500 to $8,000 installed.
| Common repair | Typical DFW range |
|---|---|
| Diagnostic / service call | Around $89 |
| Flame sensor cleaning or replacement | $150 - $200 |
| Capacitor replacement | $250 - $350 |
| Ignitor replacement | $200 - $400 |
| Blower motor replacement | $400 - $900 |
| Control board | $500 - $1,200 |
| Heat exchanger | $1,000+ |
Typical ranges from DFW-area sources, not quotes. Gas furnaces cost more to repair than electric; warranty coverage lowers the bill.
| Replacement level | Typical installed cost | Typical setup |
|---|---|---|
| Basic 80% AFUE gas | $3,500 - $5,500 | Standard-efficiency furnace, simple changeout |
| Mid-range two-stage | $4,500 - $6,000 | Higher AFUE, two-stage operation |
| High-efficiency 90%+ AFUE | $5,500 - $8,500 | Condensing unit, upgraded controls |
| Electric furnace | $3,800 - $5,500 | Lower install cost, higher running cost |
Installed ranges from DFW 2026 market data. Your price depends on fuel type, efficiency, and installation conditions.
What drives your quote up or down
- Efficiency rating (AFUE). An 80% standard furnace costs thousands less than a 95%+ condensing unit. Higher AFUE pays back through lower gas bills, which matters more the longer you stay in the home.
- Fuel type. Gas furnaces cost more to install and repair than electric, but cost less to run month to month.
- Access. Furnaces tucked into attics or crawlspaces add labor. Expect labor to run $1,500 to $3,000 of a replacement, more when modifications are needed.
- Venting. High-efficiency condensing furnaces need PVC venting rather than metal, which adds material and labor to the job.
- Permits. Most DFW cities require a mechanical permit and inspection on changeouts; a reputable contractor pulls it and includes it in the quote.
How to avoid overpaying
- Get the failed part named in the written quote, not just "furnace repair."
- Ask whether the part is still under manufacturer warranty before you approve the work.
- Use the 50% rule: if the repair exceeds half the cost of a new furnace, or the unit is 15+ years old, get a replacement quote too.
- Verify the Texas TDLR contractor license (TACLA/TACLB number) before signing.
Common questions
How much does a furnace tune-up cost in DFW?
Gas furnace tune-ups run $80 to $170 in the Dallas area, according to Porch's 2026 Dallas figures. A basic maintenance visit runs $70 to $130; a full tune-up with sensor cleaning runs $130 to $200. Fall is one of the cheapest times to book: off-season demand often means better pricing, before the first cold snap fills every shop's schedule.
Should I repair or replace my furnace?
Use the 50% rule: if the repair costs more than half of a new furnace, or the unit is 15 or more years old, replacement usually wins. Treat it as a starting point, not a verdict: age, condition, and efficiency matter beyond the raw ratio. One exception overrides the math: a cracked heat exchanger means replace, not repair, because it can leak carbon monoxide.
Do I need a permit to replace my furnace in Texas?
Most DFW cities require a mechanical permit for a full furnace changeout, though simple repairs do not need one. A reputable contractor pulls the permit as part of the job and includes it in the quote.
What AFUE rating do I need in Texas?
AFUE (Annual Fuel Utilization Efficiency) measures how much of the fuel becomes heat. Standard 80% AFUE furnaces remain legal in Texas's mild climate and cost the least upfront. High-efficiency 90%+ condensing units cost more upfront; Green Leaf Air cites a 6-to-8-year payback window through lower gas bills, so they pay off best if you plan to stay in the home.
Sources
- Jupitair HVAC, "Furnace Repair Cost: $150-$2,500 in North Texas (2026)": jupitairhvac.com: average repair $250 to $450 from recent DFW-area invoices; flame sensor $150 to $200, ignitor $200 to $400, blower motor $400 to $900; replacement favored past 50% of new cost or 15+ years.
- Green Leaf Air, "Furnace Replacement Cost 2026: Texas & North Carolina Price Guide": greenleafair.com: DFW in-field installed ranges, gas 80% AFUE $4,200 to $6,000, 90%+ AFUE $5,500 to $8,500+, electric $3,800 to $5,500.
- The Chill Brothers, "Furnace Replacement Cost in Plano: 2026 Prices & Factors": thechillbrothers.com: Plano 2026 replacement usually $3,500 to $8,000; basic $3,500 to $4,500, high efficiency $5,500 to $7,500.
- Porch, "Top 10 Furnace Repair Services in Dallas, TX 2026": porch.com: gas furnace tune-ups $80 to $170; average repair $100 to $600; neglected maintenance can void the manufacturer warranty.
- HomeYou, "Furnace Repair in Dallas, TX - Costs 06/2026": homeyou.com: Dallas average around $300; most homeowners pay $98 to $791.
- Modernize, "Top Gas Furnace Repair Pros in Dallas, TX": modernize.com: Dallas gas furnace repair typically $300 to $1,000; blower motor or heat exchanger work can reach or exceed $1,000.
Ranges checked September 2026. Typical installed costs, not quotes; your actual price depends on equipment, home, and installation conditions.