Portslade, East Sussex
Positive input ventilation (PIV) in Portslade
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Portslade and BN3, BN41 and BN42.
- From £875 inc VAT per home
- Free survey

If your Portslade flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Whether the property is in the middle of Portslade or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Portslade at a glance
- Town
- Portslade, East Sussex
- Postcode districts
- BN3, BN41 and BN42
- Nearby
- Hove (2 miles), Shoreham-by-Sea (3 miles) and Brighton (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
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 Portslade
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,100–£1,875 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £160–£325 inc VAT |
South East rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
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 Portslade
How do I get a price for a PIV unit in Portslade?
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 Portslade do you work in?
All of East Sussex. Near Portslade that includes Hove, Shoreham-by-Sea, Brighton and Lancing.
Do you cover Portslade and nearby?
Yes. We cover Portslade and nearby places including Hove, Shoreham-by-Sea, Brighton and Lancing. Send your postcode and we will confirm.
Send a photo of your loft hatch area and landing ceiling for a quicker Portslade quote.
PIV near Portslade
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