{"id":"sensor-co2","version":"0.1.0","classification":{"uniformat":"D3060"},"names":["CO2 sensor"],"aliases":["carbon dioxide sensor","IAQ sensor"],"service_life":{"median_years":15,"range_years":[15,15],"range_basis":"source_spread"},"pm_tasks":[{"task":"Check all sensors (temperature, pressure, humidity, flow) read expected values","frequency":"P6M","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":204,"checklist":"9.6.10 Building Controls Checklist"},{"task":"Calibrate all sensors (temperature, pressure, humidity, flow)","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":204,"checklist":"9.6.10 Building Controls Checklist"}],"basis":[{"type":"public_document","life_type":"design","title":"Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01)","by":"Department for Education (England)","url":"https://assets.publishing.service.gov.uk/media/6971f649d8adeaf266040501/ER-DFE-XX-XX-T-X-0201-Technical_Manual-A-C01.pdf","page":323,"code":"5.11.4","label":"Sensors and actuators: 15 years","years":15,"note":"Printed page 323. BMS sensors and actuators, types not stated. Minimum life expectancy (design requirement) for DfE-funded school buildings. Minimum design requirements placed on contractors for school buildings, not observed replacement ages. Section 5.1.4 (sanitaryware) refers to CIBSE Guide M Appendix 12.A1 'in general'."},{"type":"public_document","life_type":"design","title":"Design standards: employer's requirements – Technical Manual (ER-DFE-XX-XX-T-X-0201, revision A-C01)","by":"Department for Education (England)","url":"https://assets.publishing.service.gov.uk/media/6971f649d8adeaf266040501/ER-DFE-XX-XX-T-X-0201-Technical_Manual-A-C01.pdf","page":365,"code":"6.4.4","label":"Environmental sensors: 15 years","years":15,"note":"Printed page 365. Building technologies section; environmental sensors (room temperature, CO2, humidity). Minimum life expectancy (design requirement) for DfE-funded school buildings. Minimum design requirements placed on contractors for school buildings, not observed replacement ages. Section 5.1.4 (sanitaryware) refers to CIBSE Guide M Appendix 12.A1 'in general'."}],"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/sensor-co2","versioned_url":"https://unfinished.one/c/sensor-co2/v/0.1.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). CO2 sensor, v0.1.0. https://unfinished.one/c/sensor-co2/v/0.1.0"}