Tooting, Greater London
Positive input ventilation (PIV) in Tooting
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Tooting and CR4, SW12 and SW17.
- From £950 inc VAT per home
- Free survey
If your Tooting flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Customers in Tooting 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. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Tooting at a glance
- Town
- Tooting, Greater London
- Postcode districts
- CR4, SW12 and SW17
- Nearby
- Furzedown (1 mile), Streatham (1 mile) and Mitcham (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Tooting 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.
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 Tooting
| 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.
Signs it is time to call us
- 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
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 Tooting
Is the survey free in Tooting?
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 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.
How do I get a price for a PIV unit in Tooting?
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.
What area around Tooting do you work in?
All of Greater London. Near Tooting that includes Furzedown, Streatham, Mitcham and Earlsfield.
We will check the existing fans in your Tooting home at the same visit, because PIV works best with them working.
PIV near Tooting
More services in Tooting
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.