Pilot Assembly Replacement in Granbury, TX
A flame that won't hold usually traces to a contaminated pilot orifice or a weak thermocouple, and the reliable fix is the whole assembly rather than one worn part. We replace orifice, hood, thermocouple, thermopile, and igniter wire as a unit — a typical 8-year maintenance item — then confirm two things: the flame proves and the safety shutoff actually trips when the flame drops. Both functions are verified and the connection leak-checked before the appliance returns to service. Serving Granbury (2 ZIP codes, 11k residents) and surrounding neighborhoods with same-week scheduling.
Pilot Assembly Replacement in Granbury
Pilot assembly replacement is the diagnostic part-swap on an ignition system you already have. The classic symptom — the pilot lights but drops the moment you release the knob — points to a thermocouple no longer making enough millivolts to hold the valve open. The proving circuit is metered, the specific failed component identified (thermocouple, thermopile, igniter, or pilot hood), and replaced — a reading, not a guess. Gas ignition work is technician-only.
The Granbury file · what we actually know
11 service requests from Granbury have reached us since February 2026, the latest in August 2026. The most requested: fireplace service, chimney sweep, dryer vent cleaning.
Sources: our own service records.
Common signs in Granbury homes
- Pilot lights but goes out when you release the knob
- Weak, yellow, or wandering pilot flame
- Igniter clicks but won't catch
- Thermocouple/thermopile reads low on the meter
Pilot Assembly Replacement in Granbury — what's local
Local climate and code conditions create distinct chimney stress patterns in Granbury. Our crew follows local permit rules for pilot assembly replacement.
Built to code · Pilot Assembly Replacement in Granbury
Pilot Assembly Replacement is held to published national standards no matter the city. Our Granbury crew builds to these and documents the work; the locally-adopted code edition and permit requirements are confirmed with Granbury's authority on every job.
- Gas-train work (NFPA 54) — Replacement of the pilot component follows the NFPA 54 National Fuel Gas Code, and the connection must pass a manometer and bubble-soap leak test before we return the appliance to service.
- Appliance-matched proving part — Matching matters here. The thermocouple, thermopile, igniter, or hood is selected for the existing appliance valve so the flame-proving safety circuit performs as listed, and the pilot flame is aimed to fully envelop the sensor tip.
- Millivolt verified in range — A meter, not a guess, closes the job: once the swap is done, the proving-circuit output is re-measured, and the dropout counts as cured only when the reading holds the valve magnet open within range.
- Ambient CO check — An ambient CO reading verifies combustion is safe once the new part holds a steady pilot.
Scoped from a graded inspection
At Texas Chimney Experts, a pilot assembly replacement is never guesswork. We scope every job from a graded, photographed inspection first — the NFPA 211 level the evidence calls for — so the work is matched to what your flue and masonry actually need, with the report to prove it. The documented inspection is the record the pilot assembly replacement is built on.
Chimney inspection in GranburyEvery pilot assembly replacement in Granbury
Deliverables
- Full sweep + inspection
- Soot containment + HEPA vacuum
- Level 1 visual inspection report
- Photos of any code issues
- Recommendations + written quote
- Drop cloths + clean cleanup
How a job runs
Meter
Read the proving circuit and confirm the low reading traces to it, not to the valve.
Match
Source the correct thermocouple/igniter/hood for the valve.
Replace
Swap the failed part; re-aim the pilot to the sensor.
Prove
Re-read the millivolt output, run leak and CO tests, and hold-test the pilot.
The Granbury advantage.
Our Granbury crew lives in the metro they serve. They know which Granbury neighborhoods — — have crumbling crowns, and which newer builds skipped the cap. Local code knowledge, local referrals, local accountability for every pilot assembly replacement.
More services in Granbury
Prices shown are starting estimates and may change with the condition, access, and scope we find on site. Only a written quote from an on-site visit is a price we commit to.
Pilot Assembly Replacement in Granbury — FAQ
My pilot goes out the instant I let go of the knob — what's causing that?
A weak thermocouple leaves exactly that fingerprint. The pilot still lights, but the thermocouple no longer generates enough millivolt output to hold the gas valve's safety magnet open, so the instant you stop overriding it with the knob, the valve closes. Diagnosis is measurement, not guesswork: we meter the output, a healthy thermocouple reads around 25-30 mV open-circuit, and replace the failed proving part on the ignition you already have. For this specific symptom it is the most common fix in the book.
How is this different from a new pilot installation?
Scope. Pilot light installation builds an entire ignition system where nothing works; this service swaps a worn component out of the system you already own. Nothing about how the fireplace lights gets redesigned: the thermocouple, thermopile, igniter, or pilot hood that aged out simply gets replaced in place. When the architecture is sound and one part is dead, this is the correct service to book.
If the pilot won't hold, why not simply replace the gas valve?
Evidence first, parts second. The dropout usually traces to the inexpensive proving part rather than the valve itself: a weak thermocouple explains most cases, the fix described here, while a valve magnet that fails to hold even on a healthy millivolt signal is the rarer culprit that genuinely calls for valve work. Our test sequence meters the thermocouple output and checks the valve's hold, after first ruling out a clogged orifice or a draft, so the part that gets replaced is the part that actually failed.
Why does my pilot keep failing even after a new thermocouple was installed?
Four other suspects can produce the same symptom: a clogged pilot orifice, a draft that pulls the flame off the sensor tip, low gas pressure, or a valve magnet on its way out, and none of them care how new the thermocouple is. Our protocol re-reads the millivolt output after the swap and aims the flame so it fully envelops the sensor. Where the hood and orifice show wear too, the full hood-and-thermocouple assembly gets replaced instead of the single part.
Do you serve all of Granbury?
Yes — our crews cover Granbury's 2 ZIP codes, plus the surrounding communities.
How soon can you schedule pilot assembly replacement in Granbury?
We offer same-week scheduling across Granbury, booked by a real person in under two minutes, 7 AM to midnight every day.
How much does pilot assembly replacement cost in Granbury, TX?
Pilot Assembly Replacement in Granbury starts from $225, but the honest number depends on what a craftsman finds on site — we won't quote premium work blind. A CSIA-certified technician inspects the actual condition, then hands you an itemized, transparent written quote tied to the findings and built to one national standard. No teaser pricing, no surprises. Call (214) 444-8103 for a free, no-pressure Granbury quote.
Do you offer emergency or same-day pilot assembly replacement in Granbury?
Yes — we run same-week and emergency pilot assembly replacement across Granbury, scheduled by a real person 7 AM to midnight every day. For an active chimney hazard, call (214) 444-8103 and we prioritize Granbury dispatch so a craftsman is on it fast.
Is there a CSIA-certified pilot assembly replacement company near me in Granbury?
Our Granbury crew lives in and works the metro — a certified, local pilot assembly replacement team genuinely near you, holding the same national craftsmanship standard on every job, not dispatched cold from another city. Call (214) 444-8103.
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