Positive input ventilation (PIV) in Oakwood

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

Customers in Oakwood can get a guide price online in a couple of minutes. It uses East Midlands rates, which is what we would charge for the same job anywhere in Derbyshire. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.

PIV in Oakwood at a glance

Town: Oakwood, Derbyshire
Postcode districts: DE1, DE21 and DE22
Nearby: Chaddesden (1 mile), Derby (2 miles) and Sinfin (5 miles)
Price region: East Midlands
Survey: Free survey (UK mainland)

PIV for Oakwood homes

It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.

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 Oakwood

Positive input ventilation (PIV) guide prices in Oakwood
Work	Guide price
Positive input ventilation (PIV) loft unit, supplied and fitted (per home)	£775–£1,375 inc VAT
Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat)	£975–£1,650 inc VAT
Heater module or heated PIV unit (extra over a standard unit) (extra)	£140–£290 inc VAT

East Midlands 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

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 Oakwood

What is the price of a PIV unit in Oakwood?

Guide prices for Oakwood use East Midlands rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £775 to £1,375 inc VAT per home. We confirm a fixed price in writing before any work starts.

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.

Is the survey free in Oakwood?

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.

How do I get a price for a PIV unit in Oakwood?

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.

Get a PIV guide price for your Oakwood home online, then confirm it on a free survey.