TL;DR
A heat detector is a fire-alarm initiating device that triggers on temperature, either at a fixed threshold, commonly 135 or 194 degrees F, or on a rapid rate of rise, rather than on smoke particles. It belongs in garages, attics, and kitchens where dust, exhaust, or cooking fumes would constantly false-alarm a smoke detector, and NFPA 72 treats it as supplemental because it responds slower than smoke detection.
What it means
A heat detector is a fire-alarm initiating device that triggers on temperature, either at a fixed threshold, commonly 135 or 194 degrees F, or on a rapid rate of rise, rather than on smoke particles. It belongs in garages, attics, and kitchens where dust, exhaust, or cooking fumes would constantly false-alarm a smoke detector, and NFPA 72 treats it as supplemental because it responds slower than smoke detection. Interconnected models sound the household alarms so a garage fire wakes sleeping occupants.
Where it sits in the glossary
Heat detector is part of the Certifications group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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