Full Ignition Circuit Test
We test the igniter, flame sensor, control board, and flow sensor with a multimeter, then verify incoming gas pressure with a manifold pressure gauge. This is what separates a real diagnosis from a parts-guessing game.
Licensed
Licensed & Bonded
Fully Insured
Insured & Bonded
24/7 Emergency
Same-Day Response
Warranty Backed
Workmanship Guaranteed in Dallas
What Our Ignition and Burner Repair Includes
Every ignition and burner repair we run covers the full circuit, not just the part that failed. Here is what is included in a standard visit, and what we handle as an add-on when the diagnosis calls for it.
Burner Inspection and Cleaning
We pull the burner, inspect it for scale, soot, and cracks, and clean it with a tube brush. A dirty burner is the most common reason a Dallas tankless unit lights and then dies within seconds.
Parts Replacement
Failed igniters, flame rods, gas valves, gaskets, and burner assemblies get replaced with manufacturer-spec parts. We carry the common ones on the truck for Rinnai, Navien, Noritz, Rheem, and Bosch.
Combustion and CO Test
After the repair we fire the unit and read it with a combustion analyzer. We confirm the flame is clean, CO is within range, and the venting is sealed - because a burner that lights but burns dirty is not fixed.
Descaling Flush
If scale caused the failure, we flush the heat exchanger with a descaling pump and solution. Skipping this step means the new burner fouls again within months. It is included when the diagnosis calls for it.
Warranty and Documentation
You get a written warranty on the repair and the part, plus photos and part numbers for your records. If your unit is still under manufacturer warranty, that documentation is what you need to file a claim.
Tankless Water Heater Ignition Repair Dallas TX
Tankless water heater ignition repair Dallas TX is a diagnostic and parts-replacement service that restores the spark, flame sensing, and gas delivery your unit needs to fire. When you open a hot tap, the flow sensor wakes the board, the igniter sparks, the gas valve opens, and the flame rod confirms a burn. Any break in that chain - a carbon-fouled igniter, a lazy flame sensor, a stuck gas valve, a cracked burner tube - and you get cold water and an error code.
Dallas units take a beating. Our water runs hard, and scale buildup on the heat exchanger and burner surface is the number one cause of ignition failure we see. Add freeze damage from a February cold snap, low gas pressure on older Oak Lawn and East Dallas service lines, and venting that was sized for a tank unit, and you have a recipe for repeated lockouts. That is why we test the whole ignition circuit, not just the part that threw the code.
How Our Ignition Repair Process Works
From the first phone call to the final combustion test, here is exactly what happens when you book tankless water heater ignition repair in Dallas, Texas with us.
01
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
02
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
03
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
04
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools and Methods We Use
Tools & Equipment
Multimeter
Tests the igniter, flame sensor, and control board for correct voltage and continuity. This is how we confirm a failed part instead of replacing one on suspicion.
Manifold Pressure Gauge
Reads gas pressure at the manifold to confirm the unit is getting the fuel it needs. Low pressure is a hidden cause of ignition failure that a code reader will never show.
Combustion Analyzer
Measures CO and combustion efficiency after the repair. We do not sign off a burner job until the flame reads clean and safe.
Descaling Pump and Flush Kit
Circulates descaling solution through the heat exchanger to strip the mineral scale that fouls Dallas burners. This is the single most important maintenance step for a tankless unit on hard water.
Thermal Camera
Finds hot spots and blockages in the heat exchanger and venting that a visual inspection misses. Useful on units with intermittent flame failure.
Water Flow Meter
Verifies the flow sensor is reading correctly. A bad flow reading prevents the unit from firing even when the igniter and gas supply are fine.
Tube Brush
Cleans soot and scale from the burner surface and burner tubes. A brushed burner lights cleaner and lasts longer than a wiped one.
Methods & Standards
Full-Circuit Diagnosis
We test every component in the ignition chain - flow sensor, board, igniter, gas valve, flame sensor - rather than stopping at the first failed part. This is how we catch the second problem that would have caused a callback.
Combustion Verification
Every gas ignition and burner repair ends with a combustion analyzer reading. We confirm CO levels and flame quality before we close the cabinet, so you know the unit is burning safely, not just lighting.
UPC and IPC Compliance
Gas line work, venting changes, and pressure relief valve replacements are done to Uniform Plumbing Code and International Plumbing Code standards. We pull permits when Dallas requires them, which protects you at inspection and resale.
Manufacturer-Spec Parts
We install manufacturer-spec igniters, flame sensors, gas valves, and gaskets, not universal knockoffs. That keeps your warranty intact and your unit running the way the factory designed it.
When to Call for Ignition Repair
01
You turn on the shower and get cold water, but the unit is clicking and the display shows a code.
What we do: That is a classic ignition fault. We come out, read the code, test the igniter and flame sensor, and replace what failed. Most of these are done in two to three hours with parts we carry on the truck.
→ Hot water back the same day, and a clear explanation of what failed and why.
02
Your tankless unit runs for a few seconds, then shuts off and throws a flame failure code.
What we do: We pull the burner, check for scale and soot, test the flame sensor, and verify gas pressure with a manifold pressure gauge. If scale is the cause, we descale the heat exchanger at the same time.
→ The unit fires and stays lit, with a clean combustion reading and no more lockouts.
03
You are in University Park and your Rinnai has been serviced twice for the same ignition code.
What we do: Repeat codes usually mean the first repair missed the cause. We run a full circuit diagnosis - igniter, sensor, board, gas pressure, venting - and fix the actual root problem instead of the symptom.
→ The code stops coming back, and you stop paying for the same repair twice.
04
A restaurant or salon in Dallas loses hot water mid-service and needs it back today.
What we do: We prioritize commercial no-hot-water calls, dispatch with burner and ignition parts on board, and run a combustion test before we hand the unit back. Most commercial ignition repairs are completed in a single visit.
→ Business back to normal the same day, with documentation for your maintenance log.
How Ignition Repair Runs in Dallas
Dallas water is hard, and that single fact drives most of the tankless ignition and burner failures we see. Scale builds on the burner and heat exchanger faster here than in softer-water cities, so a unit that would run five years elsewhere often needs descaling at 18 months. Add the freeze events that hit North Texas - a cracked condensate line or a frozen heat exchanger shows up as an ignition fault weeks later - and you have a city where tankless units need real attention. Older neighborhoods like Oak Lawn and East Dallas often have gas service lines that were sized for a tank water heater, and a tankless unit pulling 199,000 BTU can drop manifold pressure enough to cause intermittent flame failure. We check gas sizing on every ignition call, not just the igniter. If you are searching for tankless water heater ignition repair Dallas TX near me, we cover the whole city, and we bring the parts to fix it on the first visit.
Neighborhoods We Serve
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Downtown Dallas
High-rise condos and lofts often have tankless units in tight mechanical closets with short vent runs. Venting and combustion air are the first things we check on ignition calls here.
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Uptown Dallas
Newer construction with Rinnai and Navien units, but hard water still scales the burners. Most Uptown ignition calls trace back to scale and a fouled flame sensor.
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Oak Lawn
Older housing stock with gas lines originally sized for tank units. Low manifold pressure is a common cause of intermittent ignition failure in this neighborhood.
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Lakewood
Mix of renovated bungalows and new builds, many with tankless conversions. We see venting that was not upgraded during the conversion, which causes flame failure.
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University Park
Larger homes with higher hot-water demand, so units run harder and burners foul faster. Annual descaling matters more here than almost anywhere in Dallas.
Local Conditions We Plan For
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Hard Dallas water and rapid scale buildup
Scale insulates the burner and heat exchanger, causing ignition failure, loud noises, and rising gas use. Descaling every 12 months is the fix, and it is the most common add-on to our ignition repairs.
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North Texas freeze events
A hard freeze can crack a heat exchanger or freeze a condensate line, leading to ignition faults that show up weeks later. We inspect for freeze damage on every cold-season call and install freeze protection.
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Older gas service lines in central Dallas
Gas lines sized for a tank water heater cannot always feed a 199,000 BTU tankless unit. We measure manifold pressure and flag undersized supply lines before they cause repeat flame failures.
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Tight mechanical closets in new construction
Short vent runs and limited combustion air cause flame failure and error codes. We verify venting to UPC and IPC standards and correct undersized or improperly pitched runs.
Navien Lockout Fixed in Lakewood
Ignition and Burner Problems We Fix
Most tankless ignition failures fall into a handful of patterns. Here are the ones we see most in Dallas, and what happens if you let them ride.
Problem
Unit clicks but will not light
You get cold water on every tap, and the repeated failed ignition cycles wear out the control board and gas valve over time.
Our Fix
We test the igniter and flame sensor, check gas pressure at the manifold, and replace the failed component. Most clicking-no-fire calls are a fouled igniter or a lazy flame sensor, fixed in one visit.
Problem
Flame lights then dies within seconds
The unit short-cycles, throws a flame failure code, and eventually locks out entirely. Gas use climbs while hot water output drops.
Our Fix
This is usually a dirty flame sensor or a scaled burner. We clean or replace the sensor, clean the burner, and confirm the burn with a combustion analyzer before we leave.
Problem
Repeated error codes after reset
Resetting the unit buys you a day or two, then the lockout returns. Meanwhile the underlying fault keeps damaging the burner and heat exchanger.
Our Fix
We read the fault history, not just the current code, and trace the real cause - gas pressure, venting, scale, or a failing board. Fixing the cause stops the codes from coming back.
Problem
Scale buildup on burner and heat exchanger
Dallas hard water leaves mineral deposits that insulate the burner, cause loud noises, and eventually kill ignition reliability and the heat exchanger itself.
Our Fix
We descale the unit with a pump and flush kit, clean the burner surface, and set you up on a maintenance schedule. Descaling every 12 months is what keeps a Dallas tankless unit lighting reliably.
Problem
Freeze damage after a hard cold snap
A frozen condensate line or cracked heat exchanger causes ignition failure that shows up weeks later, often with water damage inside the cabinet.
Our Fix
We inspect for freeze damage, repair or replace the affected parts, and install freeze protection so the next cold snap does not take your unit out again.
Why Dallas Homeowners Call Us First
A tankless unit that will not ignite is not a small inconvenience - it is cold showers, a frustrated household, and a system that keeps locking out. Here is what you get when you call us.
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Same-Day Hot Water
Most ignition and burner failures are fixed in a single visit. We stock igniters, flame rods, gas valves, and burner gaskets for Rinnai, Navien, Noritz, and Rheem on the truck, so we are not waiting on a parts order while your family waits on hot water.
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Full Circuit Diagnosis
We do not guess. A multimeter checks the igniter, a manifold pressure gauge reads gas supply, and a combustion analyzer confirms the burn after the repair. If your flame failure is really a venting or gas-pressure problem, we find it before you pay for a part you did not need.
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Code-Correct Repairs
Every gas and venting repair we make follows the Uniform Plumbing Code and International Plumbing Code, and we pull permits when Dallas requires them. That matters at resale, at inspection, and any time a warranty claim is on the line.
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Upfront Pricing, No Surprises
You get a flat price before we start. Typical ignition and burner repairs run $180 to $450 in 2026, and we tell you the number up front - not after the work is done. No trip-fee games, no upsell on parts your unit does not need.
Licensed, Certified, and Reviewed
Licensed & Certified
- State-Licensed Plumbing Contractor — issued by Texas State Board of Plumbing Examiners (TSBPE)
- NATE Certification — issued by North American Technician Excellence
- EPA Section 608 Certification — issued by U.S. Environmental Protection Agency
- Manufacturer-Specific Training — issued by Rinnai and Navien
- OSHA Safety Certification — issued by Occupational Safety and Health Administration
Verified Reviews
Google ★★★★★4.9
Diagnosed a flame failure on our Noritz that another company had missed twice. Turned out to be a scaled burner and a weak flame sensor. Fixed the same day, flat price, and the unit has run perfectly since. Honest and thorough.
Yelp ★★★★★4.8
Called about a Rinnai that would not ignite. They were at our Oak Lawn house within a few hours, replaced the igniter, and tested the gas pressure while they were at it. No upsell, no drama, just a working water heater.
BBB ★★★★★4.9
We manage several rental properties in Dallas and use them for all tankless work. Same-day response, clear pricing, and they document everything for warranty claims. Reliable across multiple units and neighborhoods.
Google ★★★★★5.0
Our commercial unit locked out on a Saturday and they came out same day. Cleaned the burner, replaced the gas valve, and ran a combustion test before leaving. Back in business by dinner. That is the response a restaurant needs.
Frequently Asked Questions
Real answers to the questions we hear most often from local homeowners and property managers.
Why is my tankless water heater not igniting in Dallas TX?
The three most common causes in Dallas are a fouled or failed igniter, a lazy flame sensor, and scale buildup on the burner and heat exchanger. Our hard water accelerates scale, and a scaled burner will not light reliably. Low gas pressure and blocked venting are the next most common. A multimeter and combustion analyzer pinpoint which one in under an hour.
How much does tankless water heater ignition repair cost in Dallas?
Most ignition and burner repairs run $180 to $450 in 2026, depending on the part and the brand. A simple igniter or flame sensor swap sits at the low end. A burner assembly or gas valve replacement, plus a descaling flush, sits at the high end. You get the flat price before we start.
Who fixes tankless water heater burners near me in Dallas TX?
We do. Our techs are state-licensed plumbing contractors with manufacturer training on Rinnai, Navien, Noritz, Rheem, Bosch, and Takagi. We carry burner parts on the truck and cover every Dallas neighborhood, from Downtown and Uptown to Lakewood, University Park, and North Dallas. Call (214) 817-0188.
Can a tankless water heater ignition be repaired same day in Dallas?
Yes, in most cases. We stock the common ignition and burner parts, so a same-day fix is normal when you call before mid-afternoon. Emergency no-hot-water calls get priority, including nights and weekends. If a rare part has to be ordered, we tell you the timeline up front and get you scheduled the moment it lands.
Related Services
Tankless Water Heater Installation
If your unit is past saving, we install a correctly sized replacement - Rinnai, Navien, Noritz, or Rheem - with proper gas sizing and venting. A clean install prevents most of the ignition and burner problems we get called out to fix.
View Tankless Water Heater InstallationTankless Water Heater Repair
Ignition and burner work is one part of tankless repair. We also handle leaking water, error codes, pressure drop, and heat exchanger failure. One call covers the whole unit, so you are not chasing three different trades.
View Tankless Water Heater RepairTankless Water Heater Maintenance
Annual maintenance is the cheapest way to avoid an ignition failure. We inspect the igniter, flame sensor, and burner, check gas pressure, and clean the inlet filter before scale turns into a no-hot-water call.
View Tankless Water Heater MaintenanceTankless Water Heater Replacement
When a burner or heat exchanger is too far gone, replacement beats repeated repairs. We size the new unit to your household demand and Dallas water conditions, then handle gas, venting, and isolation valves in one job.
View Tankless Water Heater ReplacementTankless Water Heater Tune-Ups
A tune-up keeps the ignition circuit sharp. We test the igniter and flame rod, verify the flow sensor, check the pressure relief valve, and confirm the burn with a combustion analyzer - usually in under an hour.
View Tankless Water Heater Tune-UpsTankless Water Heater Flushing & Descaling
Scale is the number one killer of Dallas tankless burners. A descaling flush with a pump and flush kit clears the heat exchanger and burner surface, restoring reliable ignition and cutting your gas use back to normal.
View Tankless Water Heater Flushing & DescalingContact Our Dallas Tankless Team
Call (214) 817-0188 any time, day or night, and we'll get a real person on the line. For non-emergency work, most Dallas jobs get a same-day or next-day appointment. You can also email info@waterheaterrepairs.com and we'll respond within one business day.
Water Heater Repairs
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Phone
(214) 817-0188 -
Address
14205 Proton Rd, Dallas, TX 75244, Dallas, Texas
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Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available