{"id":"smoke-heat-detector","version":"0.5.0","classification":{"uniformat":"D5030"},"names":["Smoke and heat detectors"],"aliases":["smoke detector","heat detector"],"service_life":{"median_years":20,"range_years":[20,20],"range_basis":"source_spread"},"pm_tasks":[{"task":"Test heat detectors with a heat source","frequency":"P2Y","reference":"UFC 3-601-02 Fire Protection Systems Inspection, Testing, and Maintenance (7 October 2021, with Change 1, 18 April 2025)","url":"https://www.wbdg.org/FFC/DOD/UFC/ufc_3_601_02_2021_c1.pdf","page":35,"checklist":"Table 2-1 Fire Detection and Alarm System ITM Tasks"},{"task":"Test smoke detectors with approved smoke simulant","frequency":"P2Y","reference":"UFC 3-601-02 Fire Protection Systems Inspection, Testing, and Maintenance (7 October 2021, with Change 1, 18 April 2025)","url":"https://www.wbdg.org/FFC/DOD/UFC/ufc_3_601_02_2021_c1.pdf","page":35,"checklist":"Table 2-1 Fire Detection and Alarm System ITM Tasks"},{"task":"Test smoke detector sensitivity","frequency":"P5Y","reference":"UFC 3-601-02 Fire Protection Systems Inspection, Testing, and Maintenance (7 October 2021, with Change 1, 18 April 2025)","url":"https://www.wbdg.org/FFC/DOD/UFC/ufc_3_601_02_2021_c1.pdf","page":36,"checklist":"Table 2-1 Fire Detection and Alarm System ITM Tasks"}],"basis":[{"type":"public_document","life_type":"planning","title":"UFM 3-601-02 Fire Protection Systems Inspection, Testing, and Maintenance (Unified Facilities Manual, 13 March 2026)","by":"U.S. Department of Defense (Unified Facilities Criteria program)","url":"https://www.wbdg.org/FFC/DOD/UFC/ufm_3_601_02_2026.pdf","page":32,"code":"Table 2-1","label":"Fire Detection and Alarm System ITM Tasks, frequency \"20 Years and As Part of Other Building Inspection (not part of ITM requirements)\": \"Smoke Detectors not monitored internally or by the control panel for sensitivity or obscuration as appropriate, (single-station detectors, and system detectors)\" - \"Replace detectors.\"","years":20,"note":"Printed page 25. System (and single-station) smoke detectors whose sensitivity is not monitored by the device or panel. Smoke detectors only; heat detectors have no replacement interval in the table (restorable heat detectors are tested every 2 years). Detectors whose sensitivity is monitored have no fixed replacement interval here."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["Every source here is a published planning, design or accounting life. None is observed replacement data."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/smoke-heat-detector","versioned_url":"https://unfinished.one/c/smoke-heat-detector/v/0.5.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Smoke and heat detectors, v0.5.0. https://unfinished.one/c/smoke-heat-detector/v/0.5.0"}