Great Harwood, Lancashire
Positive input ventilation (PIV) in Great Harwood
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Great Harwood and BB1, BB5 and BB6.
- From £750 inc VAT per home
- Free survey

For a typical Great Harwood semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Great Harwood is about 88 miles from our base in Great Barr, Birmingham. We book Great Harwood 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 Great Harwood at a glance
- Town
- Great Harwood, Lancashire
- Postcode districts
- BB1, BB5 and BB6
- Nearby
- Accrington (3 miles), Blackburn (4 miles) and Padiham (4 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
How we approach PIV in Great Harwood
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 Great Harwood
| 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 |
These ranges use our North West rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
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 Great Harwood
Do you cover Great Harwood and nearby?
Yes. We cover Great Harwood and nearby places including Accrington, Blackburn, Padiham and Clitheroe. 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 Great Harwood?
Guide prices for Great Harwood 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.
Is the survey free in Great Harwood?
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.
Get a PIV guide price for your Great Harwood home online, then confirm it on a free survey.
PIV near Great Harwood
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