Positive input ventilation (PIV) in Wellingborough

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

Wellingborough is about 54 miles from our base in Great Barr, Birmingham. We book Wellingborough 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 Wellingborough at a glance

Town: Wellingborough, Northamptonshire
Postcode districts: NN8, NN10 and NN29
Nearby: Rushden (4 miles), Kettering (7 miles) and Northampton (9 miles)
Price region: East Midlands
Survey: Free survey (UK mainland)

How we approach PIV in Wellingborough

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.

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 Wellingborough

Positive input ventilation (PIV) guide prices in Wellingborough
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. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.

Questions from Wellingborough

Do you cover Wellingborough and nearby?

Yes. We cover Wellingborough and nearby places including Rushden, Kettering, Northampton and Desborough. Send your postcode and we will confirm.

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.

What is the price of a PIV unit in Wellingborough?

Guide prices for Wellingborough 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.

Is the survey free in Wellingborough?

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 Wellingborough home at the same visit, because PIV works best with them working.