East Dulwich, Greater London
Positive input ventilation (PIV) in East Dulwich
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering East Dulwich and SE21, SE22 and SE24.
- From £950 inc VAT per home
- Free survey
PIV can suit East Dulwich houses and flats because it treats the whole home from one quiet unit.
Work in East Dulwich follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in East Dulwich at a glance
- Town
- East Dulwich, Greater London
- Postcode districts
- SE21, SE22 and SE24
- Nearby
- Forest Hill (1 mile), Peckham (1 mile) and Crofton Park (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. PIV works well in houses and flats with general condensation on windows and cold walls.
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 East Dulwich
| 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
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 East Dulwich
How do I get a price for a PIV unit in East Dulwich?
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 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.
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.
What area around East Dulwich do you work in?
All of Greater London. Near East Dulwich that includes Forest Hill, Peckham, Crofton Park and Perry Vale.
Do you cover East Dulwich and nearby?
Yes. We cover East Dulwich and nearby places including Forest Hill, Peckham, Crofton Park and Perry Vale. Send your postcode and we will confirm.
Most East Dulwich PIV jobs are done in half a day, so ask about the next available date.
PIV near East Dulwich
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