Windsor, Berkshire
Positive input ventilation (PIV) in Windsor
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Windsor and SL1, SL3 and SL4.
- From £875 inc VAT per home
- Free survey
For a typical Windsor semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Windsor 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 Berkshire. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Windsor at a glance
- Town
- Windsor, Berkshire
- Postcode districts
- SL1, SL3 and SL4
- Nearby
- Slough (2 miles), Egham (4 miles) and Burnham (5 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
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 Windsor
| 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.
When to get it looked at
- 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 Windsor
How do I get a price for a PIV unit in Windsor?
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 Windsor do you work in?
All of Berkshire. Near Windsor that includes Slough, Egham, Burnham and Staines.
Do you cover Windsor and nearby?
Yes. We cover Windsor and nearby places including Slough, Egham, Burnham and Staines. Send your postcode and we will confirm.
Book a free Windsor survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Windsor
More services in Windsor
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.