Pilot assembly replacement in Dallas
Millivolt-Tested Pilot Assembly Replacement, Right Part Every Time
We confirm which component failed before ordering a single replacement part.
$253 - $459Pilot Assembly Replacement in Dallas: Typical price
Your Gas Fireplace Pilot Won't Stay Lit - Here's What That Actually Means
A pilot that lights briefly, then dies, almost always points to one failed component inside the ignition system.
The pilot assembly - the ignition sub-system inside a gas fireplace that includes the pilot burner, thermocouple, thermopile, and sometimes an electronic igniter - does not fail all at once. One part inside it stops working. The rest may be perfectly fine.
Most homeowners notice this the same way: they hold the igniter button down, the pilot catches, the flame looks normal. Then they let go. And it goes out. That is a thermocouple or thermopile failure. Not the whole unit. Not a gas line problem. One component, with a specific and testable cause.
The thermocouple is a small metal sensor that sits in the pilot flame and generates a low-voltage signal. When it stops sensing heat correctly, it cuts gas flow. The thermopile is a larger voltage-generating component. Gas fireplaces that use a wall switch or remote rely on it. It fails independently of the thermocouple and needs its own test. Knowing which one failed is the starting point.
From First Symptom to a Lit Pilot: Our Replacement Process
Diagnostic Assessment
We start with the symptom. Pilot lights but won't hold? Won't light at all? Each symptom points to a different part of the assembly. We ask specific questions before we arrive so the tech comes prepared. On-site, the millivolt meter connects before anything is disassembled. The millivolt reading tells us which component failed. Thermocouple output below 25 millivolts - that is the part. Thermopile output below 300 millivolts on a remote-capable unit - that is the part. Both low? We address both, confirmed with data, not assumption.
OEM-Matched Replacement
We pull the model number from the unit's rating plate. Parts are matched to that specific model. Builder-grade gas fireplaces installed across DFW during the 1990s and 2000s often have proprietary valve connections - a generic part will not seat correctly on those systems. The right part matters.
Post-Installation Verification
New component installed. Millivolt test repeated. Pilot held for a sustained burn period. Main burner cycled. Gas connections rechecked. We do not call it done until the flame holds and the burner responds correctly. That is the standard on every call.
Pilot Assembly Replacement Cost in Dallas
Typical price ranges for pilot assembly replacement across Dallas and the DFW Metroplex. Smaller, simpler jobs sit at the low end.
| Service | Typical price |
|---|---|
| Pilot assembly or thermocouple | $253 - $459 |
| Ignition module replacement | $325 - $619 |
| New pilot systemValve plus pilot, or full gas system repair | $1,349 - $3,800 |
| Manual lighting solution | $485 |
Your exact price is confirmed on site before any work starts. Smaller, simpler jobs sit at the low end of each range. Our $79 chimney safety inspection is waived when you book the repair.
FAQ
How much does pilot assembly replacement cost in Dallas?
Call 972-884-5553 for current rates. Cost depends on which component failed - thermocouple, thermopile, or full assembly - and the specific fireplace model. Millivolt testing confirms the exact failed part first, so you're never quoted for components that don't need replacing.
Service area
Pilot Assembly Replacement Across Dallas, Plano, Richardson, Carrollton, Irving, and the Northern Suburbs
We serve pilot assembly replacement calls throughout the DFW Metroplex - from the urban core to the outer suburbs. Our crews reach Dallas, Plano, Carrollton, Irving, McKinney, Frisco, Allen, Garland, Richardson, Addison, Arlington, and surrounding areas. That covers the full range of DFW gas-fireplace-dense neighborhoods - from established Garland subdivisions to newer Allen and Frisco builds. If you have a gas fireplace in the Metroplex, we can get to it.
Ready to Stop Guessing Why Your Gas Fireplace Won't Light?
A millivolt test gives you a confirmed answer. A matched part gives you a working fireplace. Call The Chimney Inspection & Sweep at 972-884-5553. You can also reach us at info@theonechimneysweep.com. Tell us what the pilot is doing and where you are in DFW - we will schedule the diagnostic visit and show up with the tools and parts to resolve it on the first trip.