Keynsham, Somerset
MVHR installation in Keynsham
Whole-home heat recovery ventilation, designed room by room and airflow-tested at handover. Covering Keynsham and BS14, BS30 and BS31.
- From £4,625 inc VAT per home
- Free survey
For homeowners in Keynsham, MVHR is usually part of a bigger job: new windows, insulation, a loft conversion or an extension.
For MVHR installation in Keynsham, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
MVHR in Keynsham at a glance
- Town
- Keynsham, Somerset
- Postcode districts
- BS14, BS30 and BS31
- Nearby
- Kingswood (3 miles), Mangotsfield (5 miles) and Bristol (5 miles)
- Price region
- South West
- 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.
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.
Guide prices in Keynsham
| Work | Guide price |
|---|---|
| Whole-home MVHR retrofit, 3 bedroom house (per home) | £6,700–£9,850 inc VAT |
| Whole-home MVHR retrofit, 4 to 5 bedroom house (per home) | £9,300–£14,500 inc VAT |
| MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home) | £5,150–£8,250 inc VAT |
South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
When to get it looked at
- Mould coming back in bedrooms or bathrooms after cleaning
- You are insulating, re-windowing or making the house more airtight
- A new build or extension where the SAP or building control needs a ventilation system
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Keynsham
Do you cover Keynsham and nearby?
Yes. We cover Keynsham and nearby places including Kingswood, Mangotsfield, Bristol and Bishopsworth. Send your postcode and we will confirm.
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.
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.
What is the price of MVHR in Keynsham?
Guide prices for Keynsham use South West rates: whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £4,625 to £7,250 inc VAT per home. We confirm a fixed price in writing before any work starts.
Is the survey free in Keynsham?
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.
Ask for a Keynsham survey slot and we will bring a room-by-room design and a fixed quote.
MVHR near Keynsham
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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.