St James's, Greater London
MVHR installation in St James's
Whole-home heat recovery ventilation, designed room by room and airflow-tested at handover. Covering St James's and SW1Y, W1J and W1S.
- From £5,350 inc VAT per home
- Free survey
If you are making a St James's house warmer and tighter, MVHR keeps the air fresh without throwing the heat away.
Work in St James's follows the rules for England and finishes with a written record of what was fitted and how it was set up.
MVHR in St James's at a glance
- Town
- St James's, Greater London
- Postcode districts
- SW1Y, W1J and W1S
- Nearby
- West End (under a mile), Soho (under a mile) and Westminster (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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. We check this on survey and tell you plainly if a simpler system would do the job for less.
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 St James's
| 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 |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Signs it is time to call us
- 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 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 St James's
What area around St James's do you work in?
All of Greater London. Near St James's that includes West End, Soho, Westminster and West End of London.
Can MVHR cool the house in summer?
MVHR is not air conditioning, but a summer bypass lets cooler night air in without warming it, which helps take the edge off hot rooms. For real cooling you would need a separate system.
How much does MVHR cost to install?
A typical retrofit costs £6,450 to £9,450 including VAT for a three-bedroom house, and £4,950 to £7,950 when it goes in during a new build or full renovation. Flats start lower and large detached homes cost more because of the duct runs. We give a fixed price after the survey.
Do you cover St James's and nearby?
Yes. We cover St James's and nearby places including West End, Soho, Westminster and West End of London. Send your postcode and we will confirm.
What is the price of MVHR in St James's?
Guide prices for St James's use London rates: whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £5,350 to £8,350 inc VAT per home. We confirm a fixed price in writing before any work starts.
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