Royston, Hertfordshire
Positive input ventilation (PIV) in Royston
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Royston and SG8.
- From £825 inc VAT per home
- Free survey

PIV is often a good fix for Royston homes with condensation on every window.
Whether the property is in the middle of Royston or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Royston at a glance
- Town
- Royston, Hertfordshire
- Postcode districts
- SG8
- Nearby
- Baldock (8 miles), Letchworth Garden City (10 miles) and Biggleswade (11 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
How we approach PIV in Royston
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 Royston
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,475 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,050–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£310 inc VAT |
East of England rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
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 Royston
Is the survey free in Royston?
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.
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.
How do I get a price for a PIV unit in Royston?
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.
What area around Royston do you work in?
All of Hertfordshire. Near Royston that includes Baldock, Letchworth Garden City, Biggleswade and Henlow.
Tell us whether your Royston home has a loft and we can price a PIV unit before visiting.
PIV near Royston
More services in Royston
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.