Gas Fireplace Maintenance in San Diego, CA

Pilot lights, then drops out a few seconds later

That symptom is usually the thermopile, not the gas. The pilot flame heats it, and it generates the millivolts that hold the gas valve open. Oxide buildup on the probe cuts that output. So does a lazy pilot flame drifting off the target. Cleaning helps sometimes. A weak thermopile only gets weaker. Rooms with wall switches and remote modules load the circuit further.

San Diego units sit idle most of the year. Ten quiet months is enough for spiders to spin webs inside a pilot orifice, and for dust to cover the burner ports. That is why first cold-night failures cluster. Coastal salt air adds its own layer, seizing dampers and pitting valve linkages in older masonry fireplaces.

Maintenance work differs by system. Direct-vent inserts get the glass pulled, gasket inspected, and reseated square, since a leaking seal kills the sealed combustion loop. B-vent units need draft verified. Gas log sets in open masonry fireplaces need the damper clamp confirmed present, keeping the flue from closing fully.

We also check what sits above. Prefab chase covers holding water, missing rain caps, and nesting debris in low-use flues show up during a fireplace visit and get reported with photos.