MVHR & heat pumps
MVHR installation in London
GONT LTD installs MVHR in London homes: mechanical ventilation with heat recovery that supplies fresh, filtered air to living rooms and bedrooms, extracts stale air from kitchens and bathrooms and uses the outgoing air to warm the incoming air.
Heat recovery ventilation suits homes that are, or are becoming, airtight. We design, fit and commission the system room by room.
Scope
What’s included.
- MVHR design for the house or a new extension
- A heat recovery unit in the loft or a cupboard
- Ducts and valves in every room
- Commissioning, with air flows measured room by room
Retrofit or new build
Existing home or new space.
MVHR retrofit in an existing home
It works best alongside work that makes the house more airtight, such as new windows or insulation. In a London terrace the ducts often run through the loft, floor voids and boxing; in a draughty house, extract fans may suit better.
MVHR in a new extension or loft conversion
Building work is the easiest time, with ceilings and floors open. A new extension or loft conversion is built well sealed and needs ventilation under Part F; ducts through fire-resisting floors need fire-stopping.
Planning your project
Time, cost and what to prepare.
What affects the time and cost
- The size of the home and its wet rooms
- Where the unit and ducts can go
- Whether ceilings and floors will be open
Before you ask for a quote
- Plans of the house or extension
- Your kitchens, bathrooms, WCs and utility rooms
Rules in the UK
Permissions and regulations.
Part F of the Building Regulations covers ventilation (Approved Document F (gov.uk)). It recommends trickle vents with intermittent fans only for less airtight homes, so a very airtight home needs continuous mechanical ventilation, such as MVHR. New editions of Approved Documents F and L apply from 24 March 2027 (GOV.UK, checked 10 November 2026).
General guidance only, based on gov.uk and the Planning Portal. Your council or building control has the final say.
Things to watch
- MVHR suits an airtight home; in a draughty one, heat escapes around it.
How it works
From first call to finished room.
- 01
Free consultation and quote
Tell us what you have in mind and we’ll give you a free quote for your project.
- 02
The build
We review the project and agree the details, commence the work, then finish with quality control and a final check.
FAQ
MVHR Heat Recovery Ventilation: your questions.
Is MVHR worth it?
Yes, in an airtight, well-insulated home: steady fresh air, with much of the heat kept. In a draughty house the benefit is small.
Can you turn off MVHR?
You can, but it is designed to run all the time; in an airtight home, condensation follows.
Does MVHR heat or cool a house?
No. It recovers heat but does not create it, and it is not air conditioning.
What are the disadvantages of MVHR?
It needs an airtight home, space for ducts, filter changes and power for two fans.
How much does MVHR cost?
It depends on the home and the duct routes; one UK guide puts it at £3,500 to £12,000 (MyJobQuote, 8 October 2026).
How do I get a free quote?
Call +44 7783 930505 (Monday to Friday, 9am to 5pm), email info@gont.co.uk or use the form on this page. The consultation and quote are free.
Which areas of London do you cover?
We work across West London and Central London. Our showroom is in Fulham.
Are you insured and certified?
Yes. GONT LTD has public liability insurance, and our team holds NICEIC and F-Gas certifications.
Free quote
Get a free quote for MVHR heat recovery ventilation.
- +44 7783 930505Mon–Fri, 9am–5pm
- info@gont.co.ukEmail
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Prefer to talk it through? Contact us, call +44 7783 930505 or visit our showroom in Fulham. See all our services.