What is Thermocouple?
A single-junction temperature sensor that generates ~25 mV when heated. Holds the pilot's safety valve open. The most common gas-fireplace failure point — replace as a $30 maintenance item.
Related terms:ThermopilePilot Light
All glossary terms
Need a thermocouple inspection or repair?
We work on thermocouple every week across DFW. CSIA-certified, written quotes, financing available.
Other terms in the glossary
Creosote
Tar-like residue from incomplete wood combustion. Highly flammable.
NFPA 211
The US standard for chimney, fireplace, and vent system installation.
Inspection Levels
Level 1 (annual), Level 2 (sale/event), Level 3 (concealed damage).
Flue
The internal passage that carries combustion gases up and out.
Liner
Inner channel of the flue — clay tile, stainless steel, or cast-in-place.
Crown
The concrete cap at the very top of a masonry chimney.
One call does it
One Call Covers the Whole Home
Chimney, ducts, vents and insulation — book the services your North Texas home needs and we'll knock them out together. Schedule your free estimate today.
Licensed & Insured A Spot This Week Always In Writing
Emergency
Here Around The Clock
Next available: TodayMonTueWedThuFri
Water coming in, a critter in the flue, smoke trouble, or damage after a fire? A real person picks up from 7 AM to midnight, every day, and answers in under two minutes. We aim to have a crew at your door within two hours during the day, as soon as one is free after hours.
Reach our urgent line 4.9★ Rated CSIA Certified