Farnham, Surrey
MVHR servicing and filter changes in Farnham
Annual service, filters, heat exchanger clean and a measured airflow check for existing MVHR. Covering Farnham and GU9, GU10 and GU11.
- From £160 inc VAT per visit
- Charged visit, price agreed first

For Farnham homeowners, the usual signs a service is due are condensation coming back or the unit getting louder.
Work in Farnham follows the rules for England and finishes with a written record of what was fitted and how it was set up.
MVHR servicing in Farnham at a glance
- Town
- Farnham, Surrey
- Postcode districts
- GU9, GU10 and GU11
- Nearby
- Hale (1 mile), Aldershot (3 miles) and Fleet (5 miles)
- Price region
- South East
- Survey
- Charged visit, price agreed first
MVHR servicing for Farnham homes
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 Farnham
| Work | Guide price |
|---|---|
| MVHR service: filters, unit and heat exchanger clean, airflow check (per visit) | £160–£270 inc VAT |
| Rebalance and recommission an existing MVHR system (per system) | £270–£490 inc VAT |
| MVHR or MEV commissioning test, every terminal measured and recorded (per system) | £270–£435 inc VAT |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Signs it is time to call us
- 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 England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Farnham
How do I get a price for an MVHR service in Farnham?
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.
My new build MVHR has never been serviced. Is that a problem?
It is very common and usually fixable. Builders often hand over without explaining filter changes, so the first service often finds filters that are badly blocked. We clean everything and reset the airflows.
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.
What area around Farnham do you work in?
All of Surrey. Near Farnham that includes Hale, Aldershot, Fleet and Farnborough.
Do you cover Farnham and nearby?
Yes. We cover Farnham and nearby places including Hale, Aldershot, Fleet and Farnborough. Send your postcode and we will confirm.
Get in touch with your Farnham postcode and we will offer the next available service slot.
MVHR servicing near Farnham
More services in Farnham
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.