Every fall, I get the same question over and over: "How much is this going to cost?" And every fall, I give the same answer: "Let me look at it, and I'll tell you the exact flat rate before I touch anything." We are a flat-rate company. No hourly surprises, no "the parts cost more than we thought," no add-ons halfway through the repair. This post is my full 2026 price list for DFW furnace repair, the exact numbers I quote at every kitchen table.
I'm Omar Jacobo, EPA 608 Universal Certified, co-owner of Frosty's HVAC (TACLA126718E). Family-owned in DFW since 2018. These are the real numbers.
What Is the Average Cost of Furnace Repair in DFW in 2026?
The average cost of furnace repair in DFW in 2026 is between $350 and $800 for the most common repairs, with a diagnostic fee of $85 (waived if you approve the repair). Major component replacements like compressors or ECM blower motors can run $2,800 to $5,000. Full furnace replacement (as part of a complete HVAC system) is $8,000 to $20,000+.
Here's the complete flat-rate price list I quote:
Complete 2026 DFW Furnace Repair Price List
Every flat-rate price below covers the complete repair service — diagnosis by a licensed technician, certified parts, labor, testing, and our workmanship guarantee. These are not part-only prices; they are the total, all-inclusive cost to fully resolve the problem at your home.
Our complete diagnostic / service call repair service — diagnosis, licensed technician, certified parts, labor, and our workmanship guarantee — runs $85 (waived with repair — Frosty Club members never pay a service call fee). A full filter (during service) repair, covering the service call, diagnosis, parts, labor, and testing, is Included. For a total flame sensor cleaning/ repair — including all parts, labor, system testing, and our guarantee — the flat rate is $350-$500 ($297.50-$425 for Frosty Club members). The full-service high-limit switch repair (EPA-certified technician, parts, labor, testing, and warranty) is $350-$500 ($297.50-$425 for Frosty Club members). Our complete pressure switch repair service — diagnosis, licensed technician, certified parts, labor, and our workmanship guarantee — runs $450-$650 ($382.50-$552.50 for Frosty Club members). A full rollout switch repair, covering the service call, diagnosis, parts, labor, and testing, is $350-$500 ($297.50-$425 for Frosty Club members). For a total hot surface ignitor repair — including all parts, labor, system testing, and our guarantee — the flat rate is $350-$500 ($297.50-$425 for Frosty Club members). The full-service thermocouple (older systems) repair (EPA-certified technician, parts, labor, testing, and warranty) is $350-$450 ($297.50-$382.50 for Frosty Club members). Our complete gas valve repair service — diagnosis, licensed technician, certified parts, labor, and our workmanship guarantee — runs $500-$800 ($425-$680 for Frosty Club members). A full thermostat repair, covering the service call, diagnosis, parts, labor, and testing, is $250-$500 ($212.50-$425 for Frosty Club members). For a total draft inducer motor repair — including all parts, labor, system testing, and our guarantee — the flat rate is $650-$1,200 ($552.50-$1,020 for Frosty Club members). The full-service blower motor (standard PSC) repair (EPA-certified technician, parts, labor, testing, and warranty) is $750-$1,500 ($637.50-$1,275 for Frosty Club members). Our complete blower motor (ECM variable speed) repair service — diagnosis, licensed technician, certified parts, labor, and our workmanship guarantee — runs Up to $2,800 (Up to $2,380 for Frosty Club members). A full control board repair, covering the service call, diagnosis, parts, labor, and testing, is $650-$1,200 ($552.50-$1,020 for Frosty Club members). For a total transformer repair — including all parts, labor, system testing, and our guarantee — the flat rate is $350-$500 ($297.50-$425 for Frosty Club members). The full-service flue pipe (partial) repair (EPA-certified technician, parts, labor, testing, and warranty) is $450-$900 ($382.50-$765 for Frosty Club members). Our complete condensate drain cleaning (high-efficiency) repair service — diagnosis, licensed technician, certified parts, labor, and our workmanship guarantee — runs $350 ($297.50 for Frosty Club members). A full gas line leak (to appliance) repair, covering the service call, diagnosis, parts, labor, and testing, is $500-$1,200 ($425-$1,020 for Frosty Club members). For a total heat exchanger (cracked) repair — including all parts, labor, system testing, and our guarantee — the flat rate is FULL REPLACEMENT ONLY.
All prices are flat rate. No hourly labor surprises, no "parts cost more," no change orders mid-job.
Why Do We Charge a Diagnostic Fee?
We charge an $85 diagnostic fee because proper diagnosis takes time and tools — combustion analyzer, manometer, multimeter, amp clamp, and 20-40 minutes of testing. The diagnostic fee covers the time and expertise to identify the actual problem so we can quote an accurate repair, not a guess.
Here's the key rule: the $85 diagnostic is waived if you approve the repair. So for most calls, you pay only for the repair itself.
Example: You call because your furnace won't heat. I arrive, run diagnostics, and find a failed flame sensor. The repair is $400. You approve. Your total bill is $400, not $485. The diagnostic gets folded into the repair.
When would you pay only the diagnostic?
- The system is beyond repair and you decide to replace rather than fix
- You want a second opinion after calling us
- The repair quote is out of your budget and you want to wait
That $85 is my time, my fuel, my tools, and my expertise — and it's the fairest fee in DFW for a proper diagnosis. Many competitors charge $89-$149 for a diagnostic that isn't waived with repair. Ours is.
Related: 5 Signs Your Furnace Needs Repair (Before Winter Hits).
How Does Flat Rate Compare to Hourly Pricing?
Flat rate protects homeowners from hourly surprises because the price is fixed before work starts, regardless of how long the repair takes. Hourly pricing penalizes you when a repair goes longer than expected.
Real example from last winter: I had a flame sensor job in Coppell that should have taken 30 minutes. The sensor was in an awkward spot on an old Carrier unit, and pulling the burner assembly added 45 minutes. Flat rate was $450. On an hourly job that would have been $300-$500 labor plus parts — same outcome, but with anxiety about the clock the whole time.
Flat rate also incentivizes the tech to work efficiently. Nobody is dragging feet to pad the bill. The faster I fix it, the more jobs I can do that day, and the more homes I can help.
What Are the Most Common Furnace Repairs in DFW?
Based on hundreds of service calls across our six-city service area, these are the top 8 furnace repairs I see every winter:
1. Complete Flame Sensor Repair Service — $350-$500 all-inclusive ($297.50-$425 for Frosty Club members)
The #1 most common repair. The flame sensor is a small rod in the burner area that confirms the gas actually ignited. Carbon buildup or a failed sensor causes the burner to fire briefly, then shut off. Fast repair, easy diagnosis.
2. Complete Hot Surface Ignitor Repair Service — $350-$500 all-inclusive ($297.50-$425 for Frosty Club members)
The ignitor glows orange and lights the gas. When it cracks or weakens, the furnace clicks but doesn't light. Replacement is a 20-minute job once you're there.
3. Complete Capacitor Repair Service — $500 all-inclusive ($425 for Frosty Club members)
Motor capacitors fail in the Texas summer heat, and the blower motor stops spinning. You'll hear a hum but no airflow. Our complete capacitor repair service is a flat $500.
4. Complete Thermostat Repair Service — $250-$500 all-inclusive ($212.50-$425 for Frosty Club members)
Old mechanical thermostats, failing mercury switches, or dead digital thermostats cause strange cycling. The Frosty Thermostat (our brand smart thermostat, included free on new installs) is the replacement I recommend most often.
5. Complete High-Limit Switch Repair Service — $350-$500 all-inclusive ($297.50-$425 for Frosty Club members)
The safety that shuts the burner when the heat exchanger gets too hot. When it fails, it trips early and causes short cycling. See my short cycling post for the full diagnosis walkthrough.
6. Complete Gas Valve Repair Service — $500-$800 all-inclusive ($425-$680 for Frosty Club members)
The valve that lets gas flow to the burner. Failure causes no heat, weak flames, or intermittent lighting. Mid-range repair, less common than sensor/ignitor jobs.
7. Complete Blower Motor Repair Service — $750-$2,800 all-inclusive ($637.50-$2,380 for Frosty Club members)
Standard PSC motors are $750-$1,500. ECM (variable speed) motors run up to $2,800 because the parts are expensive. If your blower is screaming, whining, or not running at all, it's often the motor.
8. Complete Control Board Repair Service — $650-$1,200 all-inclusive ($552.50-$1,020 for Frosty Club members)
The brain of the furnace. When it fails, nothing works right. Board replacement is straightforward but parts are expensive on modern high-efficiency systems.
What If the Repair Costs More Than the System Is Worth?
Use the 50% rule: if the repair cost exceeds 50% of a new system, replacement usually makes better financial sense. For a typical DFW home, a new HVAC system starts at $8,000, so the 50% threshold is $4,000.
Examples:
- $500 complete flame sensor repair service on an 8-year-old furnace? Repair, easy call.
- $3,500 complete compressor repair service on a 14-year-old system? Close to the line. I'd lean toward replacement if it's a Stay Cool or Stay Frosty replacement that also cuts your energy bills.
- $5,000 repair on a 20-year-old system? Replace. No question.
- Cracked heat exchanger at any age? Replace. We never repair heat exchangers due to carbon monoxide risk.
The Department of Energy also notes that replacing a 15-20 year old furnace with a modern high-efficiency unit typically cuts heating bills by 15-30%, which factors into the replacement math.
Related: Pre-Season Furnace Checkup: Why September Is the Best Time.
How Much Does a Full HVAC System Replacement Cost in DFW?
A full HVAC system replacement in DFW costs $8,000 to $20,000+ depending on tier, tonnage, and home size. Our three-tier pricing:
| Tier | Brand | Price Range | |---|---|---| | Stay Cool | Goodman 15 SEER2 single-stage | $8,000-$14,000 | | Stay Frosty (most popular) | Carrier 18 SEER2 dual-stage | $12,000-$18,000 | | It's A Frosty Life | Trane 20+ SEER2 variable speed | $16,000-$20,000+ |
Adjustments: Electric -$1,000 | Heat pump +$2,000 | 10-Year Labor Warranty +$3,500
Use our AC Replacement Cost Calculator for exact pricing on your home.
How Can DFW Homeowners Save on Furnace Repair?
The three best ways to save on furnace repair are joining Frosty Club for member pricing, scheduling annual tune-ups to catch issues early, and calling before an emergency turns a small repair into a major one.
- 10% off any repair
- Priority scheduling during freeze events
- No overtime charges
- Transferable membership
Frosty Club Premium — $300/year:
- $500 off any repair
- 15% off parts
- 2 tune-ups per year (spring AC + fall furnace)
- Priority scheduling
- No overtime charges
- Transferable membership
For homes that expect any significant repair, Premium pays for itself on the first repair over $500.
Schedule Your Furnace Repair
If your furnace is acting up, don't wait for a 3 a.m. emergency during the first freeze. Call me, get a flat-rate quote, and make an informed decision. No pressure, no hourly surprises.
Call (469) 254-0548 or request service online.
Serving Farmers Branch, Coppell, Irving, Flower Mound, Lewisville, and Grapevine.
Thinking about replacement? See real pricing with our calculator. Join Frosty Club to save on every repair — learn more. Meet the family behind Frosty's.
Related Articles
- 5 Signs Your Furnace Needs Repair (Before Winter Hits)
- Pre-Season Furnace Checkup: Why September Is the Best Time
- Why Your Furnace Blows Cold Air: 7 Common Causes
Written by Omar Jacobo, EPA 608 Universal Certified Lead Technician at Frosty's HVAC LLC. Family-owned since 2018, 143 Google reviews at 4.9 stars, Texas License TACLA126718E. Serving DFW homeowners with flat-rate pricing and no surprises.
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