Dewsbury, West Yorkshire
Positive input ventilation (PIV) in Dewsbury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Dewsbury and BD11, BD19, WF12 and WF13.
- From £750 inc VAT per home
- Free survey

For a typical Dewsbury semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Dewsbury can get a guide price online in a couple of minutes. It uses Yorkshire rates, which is what we would charge for the same job anywhere in West Yorkshire. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Dewsbury at a glance
- Town
- Dewsbury, West Yorkshire
- Postcode districts
- BD11, BD19, WF12, WF13 and WF15
- Nearby
- Batley (1 mile), Ossett (2 miles) and Heckmondwike (2 miles)
- Price region
- Yorkshire
- Survey
- Free survey (UK mainland)
How we approach PIV in Dewsbury
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 Dewsbury
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £750–£1,300 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £925–£1,600 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £135–£275 inc VAT |
These ranges use our Yorkshire rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Dewsbury
Is the survey free in Dewsbury?
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 much does PIV cost to install?
A loft-mounted PIV unit usually costs £795 to £1,395 including VAT supplied and fitted, and £995 to £1,695 for a wall-mounted unit in a flat. A heater module adds around £145 to £295.
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 do I get a price for a PIV unit in Dewsbury?
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.
What area around Dewsbury do you work in?
All of West Yorkshire. Near Dewsbury that includes Batley, Ossett, Heckmondwike and Liversedge.
Most Dewsbury PIV jobs are done in half a day, so ask about the next available date.
PIV near Dewsbury
More services in Dewsbury
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.