Edgwarebury, Greater London
Positive input ventilation (PIV) in Edgwarebury
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Edgwarebury and HA7, HA8 and NW7.
- From £950 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Edgwarebury, after checking the house first.
Customers in Edgwarebury can get a guide price online in a couple of minutes. It uses London rates, which is what we would charge for the same job anywhere in Greater London. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Edgwarebury at a glance
- Town
- Edgwarebury, Greater London
- Postcode districts
- HA7, HA8 and NW7
- Nearby
- Borehamwood (2 miles), Harrow Weald (3 miles) and Totteridge (3 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Edgwarebury
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 Edgwarebury
| 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
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
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 Edgwarebury
What is the price of a PIV unit in Edgwarebury?
Guide prices for Edgwarebury 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.
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.
Is the survey free in Edgwarebury?
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.
How do I get a price for a PIV unit in Edgwarebury?
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.
We will check the existing fans in your Edgwarebury home at the same visit, because PIV works best with them working.
PIV near Edgwarebury
More services in Edgwarebury
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.