MVHR servicing and filter changes
Annual service, filters, heat exchanger clean and a measured airflow check for existing MVHR.
From £145 inc VAT per visit
Guide
How to look after an MVHR system
MVHR maintenance
Change or clean the filters every 6 to 12 months, keep the condensate drain clear and have the system serviced and airflow-checked once a year. Many MVHR problems come from filters that have never been changed.
How do I know the filters need changing?
Many units show a filter warning; otherwise follow the manufacturer's interval, typically 6 to 12 months.
What happens if filters are not changed?
Airflow falls, fans work harder and get louder, energy use rises and condensation can return.
What does a service add?
Cleaning the heat exchanger and fans, checking drains and controls, and measuring airflow at the valves.
Should I close valves in rooms I do not use?
No. Adjusting valves unbalances the system; ask for a rebalance instead.
Should I switch MVHR off in summer?
No. Use the summer bypass if fitted; the system still removes moisture and pollutants.
Sources
Related services
MVHR installation
Whole-home heat recovery ventilation, designed room by room and airflow-tested at handover.
From £4,450 inc VAT per home
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