Blackley, Greater Manchester
Positive input ventilation (PIV) in Blackley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Blackley and M8, M9 and M40.
- From £750 inc VAT per home
- Free survey

We fit loft and wall-mounted PIV units across Blackley, after checking the house first.
We cover Blackley and the surrounding M8, M9 and M40 postcodes as part of our work across Greater Manchester. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Blackley at a glance
- Town
- Blackley, Greater Manchester
- Postcode districts
- M8, M9 and M40
- Nearby
- Crumpsall (1 mile), Cheetham Hill (2 miles) and Failsworth (2 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
How we approach PIV in Blackley
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.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Blackley
| 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 |
North West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Common reasons people call
- 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 Blackley
Is the survey free in Blackley?
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.
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 much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
How do I get a price for a PIV unit in Blackley?
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 Blackley do you work in?
All of Greater Manchester. Near Blackley that includes Crumpsall, Cheetham Hill, Failsworth and Middleton.
Book a free Blackley survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Blackley
More services in Blackley
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.