Hayes, Greater London
Positive input ventilation (PIV) in Hayes
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Hayes and UB3, UB4 and UB11.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Hayes, after checking the house first.
Hayes is about 96 miles from our base in Great Barr, Birmingham. We book Hayes visits by appointment and confirm the date in writing. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Hayes at a glance
- Town
- Hayes, Greater London
- Postcode districts
- UB3, UB4 and UB11
- Nearby
- Hillingdon (2 miles), West Drayton (2 miles) and Southall (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Hayes
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,200–£2,025 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £175–£355 inc VAT |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Hayes
Is the survey free in Hayes?
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.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
How do I get a price for a PIV unit in Hayes?
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 Hayes do you work in?
All of Greater London. Near Hayes that includes Hillingdon, West Drayton, Southall and Cranford.
Book a free Hayes survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Hayes
More services in Hayes
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.