Southsea, Hampshire
Positive input ventilation (PIV) in Southsea
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Southsea and PO1, PO4 and PO5.
- From £875 inc VAT per home
- Free survey
PIV can suit Southsea houses and flats because it treats the whole home from one quiet unit.
Customers in Southsea can get a guide price online in a couple of minutes. It uses South East rates, which is what we would charge for the same job anywhere in Hampshire. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Southsea at a glance
- Town
- Southsea, Hampshire
- Postcode districts
- PO1, PO4 and PO5
- Nearby
- Portsmouth (1 mile), Gosport (2 miles) and Cosham (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Southsea homes
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.
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 Southsea
| 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 |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Southsea
How do I get a price for a PIV unit in Southsea?
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 long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
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.
What area around Southsea do you work in?
All of Hampshire. Near Southsea that includes Portsmouth, Gosport, Cosham and South Hayling.
Do you cover Southsea and nearby?
Yes. We cover Southsea and nearby places including Portsmouth, Gosport, Cosham and South Hayling. Send your postcode and we will confirm.
Get a PIV guide price for your Southsea home online, then confirm it on a free survey.
PIV near Southsea
More services in Southsea
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.