{"id":"fan-coil","version":"0.3.0","classification":{"uniformat":"D3050"},"names":["Fan coil unit"],"aliases":["FCU","fan coil"],"service_life":{"median_years":30,"range_years":[30,30],"range_basis":"source_spread"},"pm_tasks":[{"task":"Clean coil air side","frequency":"P1Y","reference":"TM 5-642 Operation and Maintenance: Small Heating Systems","url":"https://www.wbdg.org/FFC/ARMYCOE/COETM/tm_5_642.pdf","page":107,"checklist":"5-13 Maintenance (hot water fan-coil units)"}],"basis":[{"type":"public_document","life_type":"planning","title":"CNA e-Tool Estimated Useful Life Table","by":"U.S. Department of Housing and Urban Development","url":"https://www.hud.gov/sites/documents/eul_for_cna_e_tool.pdf","page":12,"code":"HUD CNA 3.4.2.2.11","label":"Fan Coil Unit, Hydronic","years":30,"note":"Same life for family and elderly properties. US multifamily housing. HUD's row is for hydronic fan coil units."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["Only one source so far, HUD's 30 years for hydronic fan coil units, and other published tables commonly give fan coils shorter lives. HUD's single row does not separate the coil and cabinet, which can last decades, from the fan motor, valves and controls, which usually do not. A second openly licensed source is needed before relying on 30 years.","Only one source so far: HUD planning lives for US multifamily housing. Canadian and observed sources are needed.","Furnace tasks come from Army TM 5-642 (1990); equipment and practice may have changed since."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/fan-coil","versioned_url":"https://unfinished.one/c/fan-coil/v/0.3.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Fan coil unit, v0.3.0. https://unfinished.one/c/fan-coil/v/0.3.0"}