MVHR installation in Greater London

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

Across Greater London 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 Bexley, Barking, Archway, Sutton and Croydon.

MVHR in Greater London at a glance

Area: Greater London
Towns listed: 216, largest Brent
Postcode districts: KT2, N1, N1C, RM11, RM12 and HA0
Price region: London
Survey: Free survey (UK mainland)

What the work involves

Inside the unit the two airflows pass each other across a heat exchanger without mixing, so the incoming fresh air picks up heat from the outgoing air. 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.

New build or full renovation

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

Radial semi-rigid ducting

One small duct per valve from a manifold. Quieter and easier to balance than branched rigid duct in most homes.

Summer bypass and boost controls

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

Guide prices in Greater London

MVHR installation guide prices in Greater London
Work	Guide price
Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home)	£5,350–£8,350 inc VAT
Whole-home MVHR retrofit, 3 bedroom house (per home)	£7,750–£11,350 inc VAT
Whole-home MVHR retrofit, 4 to 5 bedroom house (per home)	£10,750–£16,750 inc VAT
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£5,950–£9,550 inc VAT

These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.

When to get it looked at

Stale air or cooking smells that hang around
Pollen or traffic pollution you want filtered out
Condensation on windows every morning in winter

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 Greater London

Questions about MVHR installation in Greater London

Is the survey free in Greater London?

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.

How noisy is MVHR?

Correctly sized and balanced MVHR is very quiet on normal speed; most people stop noticing it within days. Noise problems usually come from undersized ducts or a unit running flat out, which is why we design the rates first.

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.

Which rules apply to ventilation in Greater London?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

Which towns in Greater London do you cover?

All of Greater London, including Bexley, Barking, Archway, Sutton and Croydon. If your town is not listed, send the postcode and we will confirm.

Every MVHR job in Greater London finishes with a measured commissioning sheet, so you know the system does what it should.