{"id":"ahu-indoor","version":"0.3.0","classification":{"uniformat":"D3040"},"names":["Air handling unit, indoor"],"aliases":["AHU","air handler","air handling unit"],"pm_tasks":[{"task":"Check filters for gaps; replace when dirty","frequency":"P1M","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":218,"checklist":"9.8.11 Fans Checklist"},{"task":"Inspect for moisture or growth on surfaces and ducts; check odours and complaints","frequency":"P1M","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":218,"checklist":"9.8.11 Fans Checklist"},{"task":"Inspect ductwork; refasten loose connections and repair leaks","frequency":"P1Y","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":218,"checklist":"9.8.11 Fans Checklist"},{"task":"Coils: confirm filters have been kept clean","frequency":"P1Y","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":218,"checklist":"9.8.11 Fans Checklist"},{"task":"Inspect and repair or replace damaged duct insulation","frequency":"P1Y","reference":"Operations & Maintenance Best Practices: A Guide to Achieving Operational Efficiency, Release 3.0","url":"https://www.energy.gov/sites/default/files/2020/04/f74/omguide_complete_w-eo-disclaimer.pdf","page":218,"checklist":"9.8.11 Fans Checklist"}],"open_questions":["No service life yet: no published source that meets the sourcing policy states one. The maintenance tasks are sourced."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/ahu-indoor","versioned_url":"https://unfinished.one/c/ahu-indoor/v/0.3.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Air handling unit, indoor, v0.3.0. https://unfinished.one/c/ahu-indoor/v/0.3.0"}