Diss, Norfolk
Positive input ventilation (PIV) in Diss
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Diss and IP21, IP22 and IP23.
- From £825 inc VAT per home
- Free survey
PIV can suit Diss houses and flats because it treats the whole home from one quiet unit.
Customers in Diss can get a guide price online in a couple of minutes. It uses East of England rates, which is what we would charge for the same job anywhere in Norfolk. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.
PIV in Diss at a glance
- Town
- Diss, Norfolk
- Postcode districts
- IP21, IP22 and IP23
- Nearby
- Attleborough (10 miles), Stowmarket (14 miles) and Thetford (15 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
How we approach PIV in Diss
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.
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 Diss
| 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 |
Guide prices using East of England rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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
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 Diss
How do I get a price for a PIV unit in Diss?
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 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.
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.
What area around Diss do you work in?
All of Norfolk. Near Diss that includes Attleborough, Stowmarket, Thetford and Bowthorpe.
Do you cover Diss and nearby?
Yes. We cover Diss and nearby places including Attleborough, Stowmarket, Thetford and Bowthorpe. Send your postcode and we will confirm.
Most Diss PIV jobs are done in half a day, so ask about the next available date.
PIV near Diss
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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.