About This Service
Gas fireplaces are wonderfully convenient until the day they click without lighting — and then the pilot, thermocouple, thermopile, gas valve, ignition module, and wall switch are all suspects. Gas fireplace repair is systematic diagnosis with the right instruments, followed by fixing the actual failed component.
Our technicians service the major brands, carry common ignition components, and test combustion and venting as part of every repair — because a gas unit that lights but vents poorly is a quieter problem than one that won't light at all. We also handle high-altitude tuning, which many Colorado units never received.
Signs You Need Gas Fireplace Repair
- Pilot won't light or won't stay lit
- The fireplace lights intermittently or with delays
- Soot forming on the glass or logs (a combustion red flag)
- Blue, lazy, or lifting flames instead of steady yellow-orange

Our Gas Service Routine
System is tested as found: ignition, flame quality, and safety controls.
Burner, pilot assembly, logs, and glass are cleaned and reset to spec.
Combustion and venting verified with instruments — not by eye.
Altitude configuration checked; many Colorado units never got theirs.
Why It Matters for Safety
Gas fireplaces fail politely — no smoke, no drama — which makes combustion and venting problems easy to live with unknowingly. Instrument-verified service is how sooting, incomplete combustion, and CO risks get caught while they're still tune-ups.
Maintenance Tips From Our Technicians
- Annual professional service keeps combustion clean and warranties intact.
- Clean the glass with fireplace-rated cleaner only; ammonia etches it.
- Keep the area around vents and louvers clear — these units need their airflow.
- Log placement matters: after any cleaning, logs must return to the exact spec position.
Why Homeowners Choose Donovan Chimney & Fireplace
Founded in 1998 and family-run since, Donovan Chimney & Fireplace built its name on straight answers. You'll see photos of what we find, get pricing before work begins, and deal with technicians who treat your home like their own. From Denver to Fort Collins to Colorado Springs, we're the call people make when they want it handled honestly.
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Frequently Asked Questions
Why does my pilot keep going out?
Most often a worn thermocouple or thermopile — the sensors that prove the pilot is lit. They're inexpensive, we stock them, and replacement is quick. If it's not the sensor, drafts, gas pressure, and the valve get checked in order.
Is soot on a gas fireplace normal?
No. Gas should burn clean; soot means incomplete combustion — misplaced logs, blocked ports, wrong air mixture, or altitude misconfiguration. It's worth a service call, both for the glass and for what it says about the burn.
Are you licensed and insured?
Fully. Donovan Chimney & Fireplace carries the licensing and insurance this work requires, and certificates are available on request — something we recommend asking of any company that climbs on your roof.
Request a Free Estimate
We're open 24/7. Fill this out and we'll get right back to you — or call 720-310-3798.
Book Gas Fireplace Repair Today
We serve Denver, Fort Collins, Colorado Springs, and every community around them — see the full service area list.
Emergencies don't keep business hours and neither do we: our phone answers 24 hours a day, 7 days a week.
