Positive input ventilation (PIV) in Buckinghamshire

PIV can suit Buckinghamshire houses and flats because it treats the whole home from one quiet unit.

Our team is based in Great Barr, Birmingham, and we work throughout Buckinghamshire, from High Wycombe, Aylesbury, Bletchley, Amersham and Chesham. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.

PIV in Buckinghamshire at a glance

Area: Buckinghamshire
Towns listed: 13, largest Milton Keynes
Postcode districts: HP11, HP12, HP19, HP20, MK1 and MK2
Price region: South East
Survey: Free survey (UK mainland)

How we do it

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. PIV works well in houses and flats with general condensation on windows and cold walls.

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.

Heated PIV

A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.

Guide prices in Buckinghamshire

Positive input ventilation (PIV) guide prices in Buckinghamshire
Work	Guide price
Positive input ventilation (PIV) loft unit, supplied and fitted (per home)	£875–£1,525 inc VAT
Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat)	£1,100–£1,875 inc VAT
Heater module or heated PIV unit (extra over a standard unit) (extra)	£160–£325 inc VAT

South East rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.

Common reasons people call

You have no loft but still need whole-flat ventilation (wall unit)
Streaming windows on most mornings in winter
Black mould on window reveals and in corners of bedrooms

Rules 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.

How the job runs

Survey
Fixed quote
Install
Set up
Hand over

Towns we cover in Buckinghamshire

Questions about positive input ventilation (PIV) in Buckinghamshire

Which rules apply to ventilation in Buckinghamshire?

In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.

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.

Which towns in Buckinghamshire do you cover?

All of Buckinghamshire, including High Wycombe, Aylesbury, Bletchley, Amersham and Chesham. If your town is not listed, send the postcode and we will confirm.

Are prices different in Buckinghamshire?

Our guide prices are adjusted by region. In Buckinghamshire we use South East rates, so positive input ventilation (PIV) loft unit, supplied and fitted is typically £875 to £1,525 inc VAT per home.

We will check the existing fans in your Buckinghamshire home at the same visit, because PIV works best with them working.