Horwich, Greater Manchester
Positive input ventilation (PIV) in Horwich
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Horwich and BL1, BL5 and BL6.
- From £750 inc VAT per home
- Free survey

For a typical Horwich semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Horwich is about 77 miles from our base in Great Barr, Birmingham. We book Horwich 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 Horwich at a glance
- Town
- Horwich, Greater Manchester
- Postcode districts
- BL1, BL5 and BL6
- Nearby
- Westhoughton (4 miles), Chorley (4 miles) and Hindley (5 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
How we approach PIV in Horwich
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. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
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 Horwich
| 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
- 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 Horwich
Is the survey free in Horwich?
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 long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
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.
How do I get a price for a PIV unit in Horwich?
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 Horwich do you work in?
All of Greater Manchester. Near Horwich that includes Westhoughton, Chorley, Hindley and Bolton.
Get a PIV guide price for your Horwich home online, then confirm it on a free survey.
PIV near Horwich
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