Leigh, Greater Manchester
Positive input ventilation (PIV) in Leigh
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Leigh and M29, M46 and WN7.
- From £750 inc VAT per home
- Free survey
PIV is often a good fix for Leigh homes with condensation on every window.
Whether the property is in the middle of Leigh or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Leigh at a glance
- Town
- Leigh, Greater Manchester
- Postcode districts
- M29, M46 and WN7
- Nearby
- Atherton (2 miles), Tyldesley (2 miles) and Abram (3 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
PIV for Leigh homes
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.
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 Leigh
| 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 |
Guide prices using North West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Leigh
How do I get a price for a PIV unit in Leigh?
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.
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.
What area around Leigh do you work in?
All of Greater Manchester. Near Leigh that includes Atherton, Tyldesley, Abram and Golborne.
Do you cover Leigh and nearby?
Yes. We cover Leigh and nearby places including Atherton, Tyldesley, Abram and Golborne. Send your postcode and we will confirm.
We will check the existing fans in your Leigh home at the same visit, because PIV works best with them working.
PIV near Leigh
More services in Leigh
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.