Home ventilation, Gwynedd and Anglesey
MVHR servicing and filter changes in Gwynedd and Anglesey
Annual service, filters, heat exchanger clean and a measured airflow check for existing MVHR, across Gwynedd and Anglesey.
- From £140 inc VAT per visit
- Charged visit, price agreed first

If your Gwynedd and Anglesey home has MVHR and the filter light is on, a service is overdue.
Our team is based in Great Barr, Birmingham, and we work throughout Gwynedd and Anglesey, from Bangor and Holyhead. Visits for this work are charged, with the price agreed before we arrive.
MVHR servicing in Gwynedd and Anglesey at a glance
- Area
- Gwynedd and Anglesey, Wales
- Towns listed
- 2, largest Bangor
- Postcode districts
- LL65, LL57 and LL58
- Price region
- Wales
- Survey
- Charged visit, price agreed first
How we do it
Over a year or two the filters clog, the fans work harder, airflow at the valves drops and the house slowly goes back to condensation and stale air. It is common for a system to go years without a filter change after the builder hands over. A service puts that right.
Filter supply
The right filters for your unit, ready to change yourself between visits.
Fault finding
Noisy fans, error codes, condensate leaks and boost controls that stopped working.
Annual service
Filters, exchanger and fan clean, drain check, controls and boost checked, airflow spot-checked at the valves.
Guide prices in Gwynedd and Anglesey
| Work | Guide price |
|---|---|
| MVHR service: filters, unit and heat exchanger clean, airflow check (per visit) | £140–£235 inc VAT |
| Rebalance and recommission an existing MVHR system (per system) | £235–£425 inc VAT |
| MVHR or MEV commissioning test, every terminal measured and recorded (per system) | £235–£375 inc VAT |
Wales rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
When to get it looked at
- Condensation is back on windows that used to stay dry
- Bathrooms take longer to clear after a shower
- The unit is louder than it used to be
Rules in Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
How the job runs
- Book a visit
- Strip and clean
- Checks
- Measure
- Report
Towns we cover in Gwynedd and Anglesey
Questions about MVHR servicing and filter changes in Gwynedd and Anglesey
Which rules apply to ventilation in Gwynedd and Anglesey?
In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
How much does an MVHR service cost?
An MVHR service usually costs £145 to £245 including VAT, depending on the unit and how easy it is to reach. Filters are included for most common units; rebalancing every valve is priced separately at £245 to £445.
How often should MVHR filters be changed?
Most manufacturers recommend changing MVHR filters every 6 to 12 months, and more often near busy roads or building sites. A full service once a year is a sensible minimum.
Which towns in Gwynedd and Anglesey do you cover?
All of Gwynedd and Anglesey, including Bangor and Holyhead. If your town is not listed, send the postcode and we will confirm.
Are prices different in Gwynedd and Anglesey?
Our guide prices are adjusted by region. In Gwynedd and Anglesey we use Wales rates, so MVHR service: filters, unit and heat exchanger clean, airflow check is typically £140 to £235 inc VAT per visit.
Ask about filter supply when you book your Gwynedd and Anglesey service, so you can do the in-between changes yourself.
Other services in Gwynedd and Anglesey
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.