Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
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AfterFast, Reliable Furnace Repair Across Keller
When your furnace quits during a Keller cold snap, you need a straight answer on cost, a technician who shows up inside the stated window, and a repair that holds. Most furnace repairs in Keller run $150 – $700 depending on the failed part, and we put that price in writing before any work starts. Call (361) 306-9515 for a free estimate. Our Furnace Repair team works on all nine major residential brands and stands behind every fix with a written one-year guarantee.
Why Dalton Heating & Air Is Keller’s Preferred Furnace Repair Company
Keller homeowners call us because we run every job on The Garrison Code: arrive inside the window, write the price down before touching a single component, do the work by the book, leave the site clean, and back the repair for a full year. That standard has held across every Garrison Partners location since 2003. If a repair fails inside that year, we return at no charge. No fine print. No callback window. The 365-Day Done Right Promise is written on every invoice, not buried in an email.
Response time to Keller matters when the temperature drops. We dispatch crews from the Dallas-Fort Worth office directly into Keller neighborhoods from Johnson Road to North Tarrant Parkway, which means we are not routing a truck from across the metro. Technicians arrive in marked vans, background-checked and uniformed, and they carry the common furnace parts on the truck: ignitors, flame sensors, gas valves, pressure switches, blower motors, control boards, and capacitors. That is why a large share of Keller no-heat calls get fixed on the first visit.
Marco Benitez, who leads our service team, holds every tech to that same standard. You will know who is coming before they pull up, and you will know the price before they start. That is the whole point of what we built.
Heating Repair in Keller
Heating repair in Keller is a different job than it is in, say, a mild coastal climate. Keller sits in the transition band between the DFW humid subtropical zone and the drier Cross Timbers, with winter design temperatures near 20°F. That means your furnace gets cycled hard during December and January nights, and components fail under real load, not just age. A heating repair call here usually involves replacing a failed ignitor, gas valve, control board, or blower motor, or clearing a tripped high-limit switch caused by restricted airflow. Most repairs land between $150 and $700, and we diagnose the exact failure before recommending any part.
Diagnostics done right the first time
We do not guess at furnaces. We test gas pressure, measure amp draw on the blower motor, check the heat exchanger for cracks, and take a static pressure reading when the airflow looks restricted. A Keller furnace that is tripping its high-limit switch every cold snap is often starving for return air, not dying. Replacing the furnace would not fix that. Fixing the airflow does.
Repair versus replace, honestly framed
Heating repair in Keller should always include the question: does this furnace still owe you anything? If the unit is under 12 years old and the heat exchanger is clean, repair is usually the right call. If it is 15 years or older and the blower motor is pulling high amps while the exchanger shows early stress, we will show you the math on repair cost versus replacement efficiency, and let you decide with real numbers.
Boiler Repair in Keller
Boiler repair in Keller is less common than forced-air work, but there are homes here, especially older properties and some custom builds off Keller Hicks Road, that run hydronic heat. A boiler repair call typically involves a failed circulator pump, a pressure-reducing valve that has drifted out of spec, or an aquastat that will not hold temperature. Most boiler repairs in Keller run from $150 to $700 depending on whether we are replacing a relief valve or a full circulator. We diagnose the exact component failure first, quote the price in writing, and do not open a single fitting until you approve the number.
Why boilers fail in Keller winters
Keller’s temperature swings are hard on hydronic systems. Repeated heating and cooling of cast-iron and copper causes fittings to work loose and air to enter the loop. A boiler that gurgles, loses pressure weekly, or delivers uneven heat to the far bedrooms off Bourland Road usually needs the expansion tank checked and the loop purged. Those are straightforward repairs when caught early, and expensive when ignored.
What we check on every boiler call
Our boiler repair process starts with system pressure, then moves to the expansion tank, pump operation, and the low-water cutoff where one exists. We test the pressure relief valve and verify the flue is drafting correctly. If the system is low on pressure, we find where the water is going before we refill it. A boiler losing pressure twice a month is telling you something, and we do not mask the symptom.
Trusted Brands We Service in Keller
Our technicians are factory-trained to service nine major HVAC brands, including Rheem, York, Daikin, and Bryant, so the furnace in your Keller home does not matter to us as a job stopper. We carry ignitors, flame sensors, pressure switches, and control boards for the most common Carrier, Trane, and Goodman units across Keller subdivisions, and we can usually source specialty parts from local supply houses off North Tarrant Parkway the same day. That means less waiting, fewer second visits, and a furnace that is back to heating before the house really cools down.
Common Furnace Repair Problems We See in Keller Homes
- Oversized furnaces short-cycling from skipped load calculations. Keller’s fast-built subdivisions have a lot of furnaces where the tonnage was copied from a neighboring plan, not calculated for the actual house. A furnace that blasts on for six minutes and shuts off is working harder and wearing faster than one that runs steady. A proper load calculation, not square footage alone, tells you whether 60K or 80K BTUs is right.
- Ignored heat exchanger cracks in older 80% furnaces. A cracked heat exchanger can put carbon monoxide into your air stream. This is not a scare line; it is the reason we inspect the exchanger on every tune-up and every repair call where the furnace is over 12 years old. If the crack is there, we show you a photo of it and stop the unit until you decide on repair or replacement.
- Tripped high-limit switches from high static pressure. Tightly built Keller homes with dirty filters or undersized return ducts starve the blower. The furnace overheats, the high-limit switch trips, and you get a cold house with a furnace that looks dead but is actually protecting you. We measure static pressure before selling a blower motor or a control board.
- Weak boards and capacitors misdiagnosed as dead furnaces. A five-minute test on the control board and a capacitance check on the run capacitor often reveals the real fault. A furnace that will not start is not automatically a replacement. We find the failed component and quote the exact repair, not a sales pitch for new equipment.
Pricing for Furnace Repair in Keller, TX
You should know the numbers before you call. Here is what furnace work actually costs in Keller:
| Service | Typical Keller Price Range |
|---|---|
| Furnace Repair | $150 – $700 |
| Tune-Up | $80 – $200 |
| AC Installation | $3,500 – $7,500 |
| AC Repair | $150 – $650 |
A $150 repair is usually a flame sensor cleaning or a capacitor. A $700 repair is a blower motor or a gas valve. Most Keller no-heat calls fall between $200 and $400 because the common failures are ignitors, pressure switches, and control boards. The price we quote is the price you pay, written down before any work begins. Estimates are free. Call (361) 306-9515.
We Also Serve Cities Near Keller
Our trucks run daily from Keller into Haslet, North Richland Hills, Roanoke, and Southlake. If you are a homeowner in one of those cities with a furnace that will not start, you get the same Garrison Standard: written pricing, a live person on the phone 24/7, and a full-year guarantee on the repair. The drive matters less than the discipline of the work.
Serving Keller, TX - Our Local Coverage Area
We’re based in the Keller area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Furnace Repair in Keller
Square footage alone does not decide it. A 2,400 sq ft home in Keller could need either a 60K or an 80K BTU furnace depending on ceiling height, window area, insulation levels, and how tight the envelope is. The only way to know is a Manual J load calculation, which we run before recommending any replacement. Many Keller homes built in the 2000s and early 2010s were fitted with furnaces copied from a neighboring floor plan, and a lot of them are one size too big. A furnace that is oversized short-cycles, which costs you efficiency and shortens equipment life. Call (361) 306-9515 and we will run the actual numbers for your house, not a rule of thumb.
Most furnace repairs in Keller run $150 – $700, with the typical no-heat visit landing between $200 and $400. The replace question turns on the heat exchanger and the blower motor. If the exchanger is cracked, replacement is almost always the right call, especially on a furnace over 14 years old. If the blower motor is pulling high amps and the unit is at 15 years with a dirty evaporator coil, you are looking at a repair cost that may not extend the furnace’s life meaningfully. We show you the repair price and the replacement price side by side, and you decide. No one sells you anything on a commission.
No. SEER2 is a cooling efficiency metric for air conditioners and heat pumps. Furnaces are rated by AFUE, which measures how much of the fuel’s heat actually reaches your ductwork. An 80% AFUE furnace sends 80 cents of every gas dollar into the house and 20 cents up the flue. A 95% or 96% AFUE furnace keeps almost all of it. In Keller’s winter design temperatures near 20°F, switching from an 80% to a 95%+ furnace on a properly sized unit can cut your January gas bill substantially. That is a furnace number, not a SEER2 number, and it matters more for our climate than any cooling rating.
Because the furnace is overheating, and the high-limit switch is doing its job by shutting the burners off before the heat exchanger cracks. The most common causes in Keller homes are a dirty filter, closed supply vents, or an undersized return duct starving the blower. Tightly built houses with only one central return are especially prone to it. We measure static pressure across the blower to find the restriction and fix the airflow rather than resetting the switch and hoping. If the limit keeps tripping, do not keep resetting it; call us and we will find the real cause.
We service both. Keller has a mix of forced-air furnaces and hydronic boiler systems, especially in older custom homes and some properties off Keller Hicks Road. Boiler repair in Keller typically runs $150 – $700 for failed circulator pumps, pressure relief valves, aquastats, or expansion tanks. The diagnostic process is different from a forced-air furnace, but the standard is the same: written price before any work, a one-year guarantee on the repair, and a clean site when we leave. Call (361) 306-9515 to schedule a boiler or furnace visit.
If your furnace quit in a Keller cold snap, call (361) 306-9515. A live person answers, 24 hours a day, seven days a week. We will give you a written price before any work starts, and we will stand behind the repair in writing for a full year.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Keller, TX.