Mirfield, West Yorkshire
Positive input ventilation (PIV) in Mirfield
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Mirfield and WF13, WF14 and WF15.
- From £750 inc VAT per home
- Free survey

If your Mirfield flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Mirfield is about 78 miles from our base in Great Barr, Birmingham. We book Mirfield 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 Mirfield at a glance
- Town
- Mirfield, West Yorkshire
- Postcode districts
- WF13, WF14 and WF15
- Nearby
- Liversedge (2 miles), Heckmondwike (2 miles) and Dewsbury (3 miles)
- Price region
- Yorkshire
- Survey
- Free survey (UK mainland)
PIV for Mirfield 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 Mirfield
| 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.
Signs it is time to call us
- 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. 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 Mirfield
What area around Mirfield do you work in?
All of West Yorkshire. Near Mirfield that includes Liversedge, Heckmondwike, Dewsbury and Batley.
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.
Do you cover Mirfield and nearby?
Yes. We cover Mirfield and nearby places including Liversedge, Heckmondwike, Dewsbury and Batley. Send your postcode and we will confirm.
What is the price of a PIV unit in Mirfield?
Guide prices for Mirfield use Yorkshire rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,300 inc VAT per home. We confirm a fixed price in writing before any work starts.
Get a PIV guide price for your Mirfield home online, then confirm it on a free survey.
PIV near Mirfield
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