Totteridge, Greater London
Positive input ventilation (PIV) in Totteridge
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Totteridge and EN5, N12 and N20.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Totteridge, after checking the house first.
Totteridge is about 96 miles from our base in Great Barr, Birmingham. We book Totteridge 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 Totteridge at a glance
- Town
- Totteridge, Greater London
- Postcode districts
- EN5, N12 and N20
- Nearby
- Barnet (1 mile), New Barnet (2 miles) and East Barnet (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Totteridge homes
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 Totteridge
| 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 |
London rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
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
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 Totteridge
What area around Totteridge do you work in?
All of Greater London. Near Totteridge that includes Barnet, New Barnet, East Barnet and Finchley.
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.
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.
Do you cover Totteridge and nearby?
Yes. We cover Totteridge and nearby places including Barnet, New Barnet, East Barnet and Finchley. Send your postcode and we will confirm.
What is the price of a PIV unit in Totteridge?
Guide prices for Totteridge use London rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £950 to £1,675 inc VAT per home. We confirm a fixed price in writing before any work starts.
Book a free Totteridge survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Totteridge
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