West Drayton, Greater London
Positive input ventilation (PIV) in West Drayton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering West Drayton and UB3, UB7 and UB11.
- From £950 inc VAT per home
- Free survey
PIV can suit West Drayton houses and flats because it treats the whole home from one quiet unit.
We cover West Drayton and the surrounding UB3, UB7 and UB11 postcodes as part of our work across Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in West Drayton at a glance
- Town
- West Drayton, Greater London
- Postcode districts
- UB3, UB7 and UB11
- Nearby
- Hayes (2 miles), Hillingdon (2 miles) and Cranford (3 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 West Drayton
| 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
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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 West Drayton
How do I get a price for a PIV unit in West Drayton?
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 West Drayton do you work in?
All of Greater London. Near West Drayton that includes Hayes, Hillingdon, Cranford and Stanwell.
Do you cover West Drayton and nearby?
Yes. We cover West Drayton and nearby places including Hayes, Hillingdon, Cranford and Stanwell. Send your postcode and we will confirm.
We will check the existing fans in your West Drayton home at the same visit, because PIV works best with them working.
PIV near West Drayton
More services in West Drayton
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.