Guildford, Surrey
Positive input ventilation (PIV) in Guildford
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Guildford and GU1, GU2 and GU4.
- From £875 inc VAT per home
- Free survey
PIV is often a good fix for Guildford homes with condensation on every window.
We cover Guildford and the surrounding GU1, GU2 and GU4 postcodes as part of our work across Surrey. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Guildford at a glance
- Town
- Guildford, Surrey
- Postcode districts
- GU1, GU2 and GU4
- Nearby
- Godalming (4 miles), Woking (6 miles) and Cranleigh (8 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
How we approach PIV in Guildford
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. PIV works well in houses and flats with general condensation on windows and cold walls.
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 Guildford
| 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
- 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 Guildford
Do you cover Guildford and nearby?
Yes. We cover Guildford and nearby places including Godalming, Woking, Cranleigh and Aldershot. Send your postcode and we will confirm.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
What is the price of a PIV unit in Guildford?
Guide prices for Guildford 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.
Is the survey free in Guildford?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Send a photo of your loft hatch area and landing ceiling for a quicker Guildford quote.
PIV near Guildford
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