Keynsham, Somerset
Positive input ventilation (PIV) in Keynsham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Keynsham and BS14, BS30 and BS31.
- From £825 inc VAT per home
- Free survey
If your Keynsham flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Customers in Keynsham can get a guide price online in a couple of minutes. It uses South West rates, which is what we would charge for the same job anywhere in Somerset. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV 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)
PIV for Keynsham homes
Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Keynsham
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,025–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£305 inc VAT |
South West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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
How do I get a price for a PIV unit in Keynsham?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
What area around Keynsham do you work in?
All of Somerset. Near Keynsham that includes Kingswood, Mangotsfield, Bristol and Bishopsworth.
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.
Send a photo of your loft hatch area and landing ceiling for a quicker Keynsham quote.
PIV 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.