Cranleigh, Surrey
Positive input ventilation (PIV) in Cranleigh
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Cranleigh and GU5 and GU6.
- From £875 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Cranleigh, after checking the house first.
For positive input ventilation (PIV) in Cranleigh, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Cranleigh at a glance
- Town
- Cranleigh, Surrey
- Postcode districts
- GU5 and GU6
- Nearby
- Godalming (6 miles), Guildford (8 miles) and Horsham (9 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Cranleigh
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
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 Cranleigh
| 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.
Common reasons people call
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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 Cranleigh
How do I get a price for a PIV unit in Cranleigh?
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 Cranleigh do you work in?
All of Surrey. Near Cranleigh that includes Godalming, Guildford, Horsham and Dorking.
Do you cover Cranleigh and nearby?
Yes. We cover Cranleigh and nearby places including Godalming, Guildford, Horsham and Dorking. Send your postcode and we will confirm.
Get a PIV guide price for your Cranleigh home online, then confirm it on a free survey.
PIV near Cranleigh
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