Positive input ventilation (PIV) in Tyldesley

If your Tyldesley flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.

Tyldesley is about 70 miles from our base in Great Barr, Birmingham. We book Tyldesley visits by appointment and confirm the date in writing. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.

PIV in Tyldesley at a glance

Town: Tyldesley, Greater Manchester
Postcode districts: M29, M38 and M46
Nearby: Atherton (1 mile), Leigh (2 miles) and Little Hulton (2 miles)
Price region: North West
Survey: Free survey (UK mainland)

PIV for Tyldesley homes

Loft air is usually a little warmer and drier than outside air, and the unit filters it before it comes down into the house. 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.

Heated PIV

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

Wall-mounted PIV for flats

Draws air from outside through an outside wall. Suits flats and homes with no loft space.

Guide prices in Tyldesley

Positive input ventilation (PIV) guide prices in Tyldesley
Work	Guide price
Positive input ventilation (PIV) loft unit, supplied and fitted (per home)	£750–£1,325 inc VAT
Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat)	£950–£1,600 inc VAT
Heater module or heated PIV unit (extra over a standard unit) (extra)	£140–£280 inc VAT

Guide prices using North West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.

Signs it is time to call us

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 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 Tyldesley

What area around Tyldesley do you work in?

All of Greater Manchester. Near Tyldesley that includes Atherton, Leigh, Little Hulton and Walkden.

Does PIV really stop condensation?

PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.

How much does PIV cost to run?

A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.

Do you cover Tyldesley and nearby?

Yes. We cover Tyldesley and nearby places including Atherton, Leigh, Little Hulton and Walkden. Send your postcode and we will confirm.

What is the price of a PIV unit in Tyldesley?

Guide prices for Tyldesley use North West rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,325 inc VAT per home. We confirm a fixed price in writing before any work starts.

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