MVHR installation in Surrey

For homeowners in Surrey, MVHR is usually part of a bigger job: new windows, insulation, a loft conversion or an extension.

Across Surrey the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Redhill, Staines, Banstead, Leatherhead and Ewell.

MVHR in Surrey at a glance

Area: Surrey
Towns listed: 35, largest Woking
Postcode districts: KT15, KT18, KT21, RH8, RH9 and GU14
Price region: South East
Survey: Free survey (UK mainland)

What the work involves

Filters on both sides keep pollen and dust out of the house and keep the exchanger clean. MVHR works best in a home that is reasonably airtight: a new build, a deep retrofit with insulation and new windows, or a renovation where ceilings are coming down anyway. In a draughty older house it still ventilates well, but less of the heat-recovery benefit is felt because warm air escapes through gaps instead of the unit.

Summer bypass and boost controls

Bypass lets cooler night air in without heat recovery; humidity or switch boost for showers and cooking.

Retrofit in an occupied home

Ducts routed through the loft and down through cupboards or boxed corners. Most semis are done in 3 to 5 days.

New build or full renovation

Ducts go in at first fix before plasterboard, which is the cheapest and neatest time to fit MVHR.

Guide prices in Surrey

MVHR installation guide prices in Surrey
Work	Guide price
Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home)	£4,900–£7,650 inc VAT
Whole-home MVHR retrofit, 3 bedroom house (per home)	£7,100–£10,400 inc VAT
Whole-home MVHR retrofit, 4 to 5 bedroom house (per home)	£9,850–£15,350 inc VAT
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£5,450–£8,750 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.

When to get it looked at

Condensation on windows every morning in winter
Mould coming back in bedrooms or bathrooms after cleaning
You are insulating, re-windowing or making the house more airtight

Rules 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.

How the job runs

Survey and room schedule
Design and airflow rates
First fix
Second fix and valves
Commission and hand over

Towns we cover in Surrey

Questions about MVHR installation in Surrey

Which towns in Surrey do you cover?

All of Surrey, including Redhill, Staines, Banstead, Leatherhead and Ewell. If your town is not listed, send the postcode and we will confirm.

Do I keep my trickle vents with MVHR?

No. Under Approved Document F, background ventilators should not be installed with a whole-home MVHR system, so we advise closing or removing them once the system is commissioned.

How often does MVHR need servicing?

Filters usually need changing every 6 to 12 months, and a full service with a clean and airflow check once a year keeps the system efficient. Clogged filters are the most common reason MVHR stops working properly.

Are prices different in Surrey?

Our guide prices are adjusted by region. In Surrey we use South East rates, so whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £4,900 to £7,650 inc VAT per home.

Is the survey free in Surrey?

For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.

Send us a floor plan or a few photos of the loft and we can give a first price for your Surrey home before we visit.