Llantwit Major, South Glamorgan
MVHR servicing and filter changes in Llantwit Major
Annual service, filters, heat exchanger clean and a measured airflow check for existing MVHR. Covering Llantwit Major and CF61 and CF71.
- From £140 inc VAT per visit
- Charged visit, price agreed first

Many Llantwit Major new builds have MVHR in the loft that nobody told the owners how to look after.
For MVHR servicing and filter changes in Llantwit Major, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
MVHR servicing in Llantwit Major at a glance
- Town
- Llantwit Major, South Glamorgan
- Postcode districts
- CF61 and CF71
- Nearby
- Bridgend (8 miles), Coity (8 miles) and Barry (9 miles)
- Price region
- Wales
- Survey
- Charged visit, price agreed first
How we approach MVHR servicing in Llantwit Major
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.
Rebalance and recommission
Every valve measured and set again to the design rates, with a new commissioning sheet. Useful after building work or if rooms feel stuffy.
Filter supply
The right filters for your unit, ready to change yourself between visits.
Guide prices in Llantwit Major
| 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.
Common reasons people call
- Water dripping from the unit or ducts
- The unit filter warning is showing
- Condensation is back on windows that used to stay dry
Rules that apply in Wales
In Wales, ventilation follows the Welsh Approved Document F rather than the English version, with building control checking notifiable work. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
Questions from Llantwit Major
Is the survey free in Llantwit Major?
This is a charged visit because it is servicing, testing or repair work. We tell you the cost before booking. Surveys for new installations on the UK mainland are free.
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.
How do I get a price for an MVHR service in Llantwit Major?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
What area around Llantwit Major do you work in?
All of South Glamorgan. Near Llantwit Major that includes Bridgend, Coity, Barry and Aberkenfig.
Send a photo of your unit label and we will confirm the price for your Llantwit Major visit.
MVHR servicing near Llantwit Major
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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.