East Barnet, Greater London
Positive input ventilation (PIV) in East Barnet
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering East Barnet and EN4, EN5 and N20.
- From £950 inc VAT per home
- Free survey
PIV can suit East Barnet houses and flats because it treats the whole home from one quiet unit.
East Barnet is about 97 miles from our base in Great Barr, Birmingham. We book East Barnet 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 East Barnet at a glance
- Town
- East Barnet, Greater London
- Postcode districts
- EN4, EN5 and N20
- Nearby
- Cockfosters (1 mile), New Barnet (1 mile) and Hadley Wood (1 mile)
- 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.
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 East Barnet
| 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
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from East Barnet
How do I get a price for a PIV unit in East Barnet?
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 East Barnet do you work in?
All of Greater London. Near East Barnet that includes Cockfosters, New Barnet, Hadley Wood and Barnet.
Do you cover East Barnet and nearby?
Yes. We cover East Barnet and nearby places including Cockfosters, New Barnet, Hadley Wood and Barnet. Send your postcode and we will confirm.
We will check the existing fans in your East Barnet home at the same visit, because PIV works best with them working.
PIV near East Barnet
More services in East Barnet
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.