Ventilation systems in care homes -- mechanical extract ventilation (MEV), heat recovery systems (MVHR), kitchen extract canopies and toilet extract fans -- require regular cleaning and servicing to maintain air quality and prevent fire risk from grease build-up. Most care home planned maintenance schedules underspecify ventilation work.
Mechanical extract ventilation, heat recovery systems and toilet extract fans are often treated as low-priority items in planned maintenance schedules because their failure is not immediately obvious the way a leaking roof or a broken lift would be. In reality, poor ventilation servicing degrades air quality gradually, increases the risk of condensation-related damp and mould, and -- in kitchen extract systems specifically -- creates a serious fire risk from accumulated grease that most planned maintenance schedules do not adequately capture.
NHS Health Technical Memorandum 03-01 provides the recognised benchmark for the design, installation, commissioning and ongoing maintenance of ventilation systems in healthcare and social care premises. While written primarily for NHS estates, it is widely used across the care sector as good practice guidance for servicing frequency, filter replacement, ductwork cleanliness and performance verification, and referencing it in your maintenance specification demonstrates that servicing has been benchmarked against a recognised standard rather than set arbitrarily.
Grease build-up within kitchen extract canopies and ductwork is one of the most significant and preventable fire risks in a care home, since accumulated grease is highly combustible and can allow a small kitchen fire to spread rapidly through the ductwork into other parts of the building. Kitchen extract systems should be cleaned and inspected at a frequency appropriate to usage intensity, with a specialist grease extract cleaning certificate issued after each service confirming the system has been cleaned to the required standard.
Beyond fire risk, poorly maintained general ventilation -- blocked filters, fans not achieving design airflow, or ductwork contaminated with dust and debris -- reduces indoor air quality and can contribute to increased infection transmission risk, a particular concern in a care setting with a vulnerable resident population. Regular filter replacement, fan performance checks and periodic ductwork inspection should be built into the planned maintenance schedule rather than left until a fault or complaint prompts attention.
A defensible ventilation maintenance programme should specify the servicing frequency for each system type, referenced against HTM 03-01 or equivalent guidance, and should generate a dated record for each service including any defects found and remedial action taken. Kitchen extract cleaning certificates in particular should be retained and readily available, since insurers and fire risk assessors will often ask for them directly as evidence that grease-related fire risk is being actively controlled.
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