Cowes, Isle of Wight
Positive input ventilation (PIV) in Cowes
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Cowes and PO30, PO31 and PO32.
- From £875 inc VAT per home
- By arrangement

PIV is often a good fix for Cowes homes with condensation on every window.
We cover Cowes and the surrounding PO30, PO31 and PO32 postcodes as part of our work across the Isle of Wight. Visits here are by arrangement: we quote travel separately and in writing before you commit.
PIV in Cowes at a glance
- Town
- Cowes, Isle of Wight
- Postcode districts
- PO30, PO31 and PO32
- Nearby
- Newport (4 miles), Ryde (6 miles) and Sandown (10 miles)
- Price region
- South East
- Survey
- By arrangement, travel quoted first
PIV for Cowes homes
Loft air is usually a little warmer and drier than outside air, and the unit filters it before it comes down into the house. 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.
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 Cowes
| 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. Travel is quoted separately for this area.
Signs it is time to call us
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Cowes
How do I get a price for a PIV unit in Cowes?
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 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.
Does PIV really stop condensation?
PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.
What area around Cowes do you work in?
All of the Isle of Wight. Near Cowes that includes Newport, Ryde and Sandown.
Do you cover Cowes and nearby?
Yes. We cover Cowes and nearby places including Newport, Ryde and Sandown. Send your postcode and we will confirm.
Most Cowes PIV jobs are done in half a day, so ask about the next available date.
PIV near Cowes
More services in Cowes
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.