Harrow Road, Greater London
Positive input ventilation (PIV) in Harrow Road
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Harrow Road and W9, W10 and W11.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Harrow Road, after checking the house first.
Harrow Road is about 102 miles from our base in Great Barr, Birmingham. We book Harrow Road 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 Harrow Road at a glance
- Town
- Harrow Road, Greater London
- Postcode districts
- W9, W10 and W11
- Nearby
- Maida Hill (under a mile), Queen's Park (under a mile) and Westbourne (under a mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Harrow Road
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 Harrow Road
| 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 |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Common reasons people call
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
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 Harrow Road
How do I get a price for a PIV unit in Harrow Road?
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 Harrow Road do you work in?
All of Greater London. Near Harrow Road that includes Maida Hill, Queen's Park, Westbourne and Little Venice.
Do you cover Harrow Road and nearby?
Yes. We cover Harrow Road and nearby places including Maida Hill, Queen's Park, Westbourne and Little Venice. Send your postcode and we will confirm.
We will check the existing fans in your Harrow Road home at the same visit, because PIV works best with them working.
PIV near Harrow Road
More services in Harrow Road
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.