Havant, Hampshire
Positive input ventilation (PIV) in Havant
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Havant and PO7, PO9 and PO10.
- From £875 inc VAT per home
- Free survey

If your Havant flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
We cover Havant and the surrounding PO7, PO9 and PO10 postcodes as part of our work across Hampshire. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Havant at a glance
- Town
- Havant, Hampshire
- Postcode districts
- PO7, PO9 and PO10
- Nearby
- Emsworth (2 miles), Waterlooville (3 miles) and Cosham (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Havant homes
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.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in Havant
| 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 |
These ranges use our South East rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
Signs it is time to call us
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
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 Havant
What area around Havant do you work in?
All of Hampshire. Near Havant that includes Emsworth, Waterlooville, Cosham and South Hayling.
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.
Do you cover Havant and nearby?
Yes. We cover Havant and nearby places including Emsworth, Waterlooville, Cosham and South Hayling. Send your postcode and we will confirm.
What is the price of a PIV unit in Havant?
Guide prices for Havant use South East rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £875 to £1,525 inc VAT per home. We confirm a fixed price in writing before any work starts.
Book a free Havant survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Havant
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