Vincent Square, Greater London
Positive input ventilation (PIV) in Vincent Square
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Vincent Square and SW1, SW1P and SW1V.
- From £950 inc VAT per home
- Free survey
For a typical Vincent Square semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
We cover Vincent Square and the surrounding SW1, SW1P and SW1V postcodes as part of our work across Greater London. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Vincent Square at a glance
- Town
- Vincent Square, Greater London
- Postcode districts
- SW1, SW1P and SW1V
- Nearby
- Pimlico (under a mile), Westminster (under a mile) and St James's (1 mile)
- Price region
- London
- Survey
- Free survey (UK mainland)
PIV for Vincent Square 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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Vincent Square
| 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.
When to get it looked at
- 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
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Vincent Square
How do I get a price for a PIV unit in Vincent Square?
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.
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 much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
What area around Vincent Square do you work in?
All of Greater London. Near Vincent Square that includes Pimlico, Westminster, St James's and Queenstown.
Do you cover Vincent Square and nearby?
Yes. We cover Vincent Square and nearby places including Pimlico, Westminster, St James's and Queenstown. Send your postcode and we will confirm.
Most Vincent Square PIV jobs are done in half a day, so ask about the next available date.
PIV near Vincent Square
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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.