Crawley, West Sussex
Positive input ventilation (PIV) in Crawley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Crawley and RH6, RH10 and RH11.
- From £875 inc VAT per home
- Free survey
PIV is often a good fix for Crawley homes with condensation on every window.
Customers in Crawley 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 West Sussex. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Crawley at a glance
- Town
- Crawley, West Sussex
- Postcode districts
- RH6, RH10 and RH11
- Nearby
- Broadfield (2 miles), Horley (4 miles) and Horsham (7 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
What the work involves
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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Crawley
| 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 |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Crawley
Do you cover Crawley and nearby?
Yes. We cover Crawley and nearby places including Broadfield, Horley, Horsham and East Grinstead. Send your postcode and we will confirm.
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.
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.
What is the price of a PIV unit in Crawley?
Guide prices for Crawley 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 Crawley?
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 Crawley quote.
PIV near Crawley
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.