Southgate, Greater London
Positive input ventilation (PIV) in Southgate
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Southgate and N13, N21 and N22.
- From £950 inc VAT per home
- Free survey
For a typical Southgate semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
We cover Southgate and the surrounding N13, N21 and N22 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 Southgate at a glance
- Town
- Southgate, Greater London
- Postcode districts
- N13, N21 and N22
- Nearby
- Palmers Green (under a mile), Wood Green (1 mile) and Tottenham (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
How we approach PIV in Southgate
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
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 Southgate
| 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 |
These ranges use our London rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- 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
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 Southgate
How do I get a price for a PIV unit in Southgate?
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.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
What area around Southgate do you work in?
All of Greater London. Near Southgate that includes Palmers Green, Wood Green, Tottenham and Edmonton.
Do you cover Southgate and nearby?
Yes. We cover Southgate and nearby places including Palmers Green, Wood Green, Tottenham and Edmonton. Send your postcode and we will confirm.
Get a PIV guide price for your Southgate home online, then confirm it on a free survey.
PIV near Southgate
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