Kempston, Bedfordshire
Positive input ventilation (PIV) in Kempston
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Kempston and MK40, MK42 and MK43.
- From £825 inc VAT per home
- Free survey
For a typical Kempston semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Kempston is about 67 miles from our base in Great Barr, Birmingham. We book Kempston visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Kempston at a glance
- Town
- Kempston, Bedfordshire
- Postcode districts
- MK40, MK42 and MK43
- Nearby
- Bedford (2 miles), Ampthill (6 miles) and Flitwick (8 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
How we approach PIV in Kempston
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Kempston
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,475 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,050–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£310 inc VAT |
Guide prices using East of England rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Kempston
Do you cover Kempston and nearby?
Yes. We cover Kempston and nearby places including Bedford, Ampthill, Flitwick and Sandy. Send your postcode and we will confirm.
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 is the price of a PIV unit in Kempston?
Guide prices for Kempston use East of England rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £825 to £1,475 inc VAT per home. We confirm a fixed price in writing before any work starts.
Is the survey free in Kempston?
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.
We will check the existing fans in your Kempston home at the same visit, because PIV works best with them working.
PIV near Kempston
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