East Dereham, Norfolk
Positive input ventilation (PIV) in East Dereham
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering East Dereham and NR19 and NR20.
- From £825 inc VAT per home
- Free survey
For a typical East Dereham semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Work in East Dereham follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in East Dereham at a glance
- Town
- East Dereham, Norfolk
- Postcode districts
- NR19 and NR20
- Nearby
- Attleborough (12 miles), Bowthorpe (12 miles) and Norwich (16 miles)
- Price region
- East of England
- 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.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in East Dereham
| 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.
When to get it looked at
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from East Dereham
How do I get a price for a PIV unit in East Dereham?
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 East Dereham do you work in?
All of Norfolk. Near East Dereham that includes Attleborough, Bowthorpe, Norwich and Thetford.
Do you cover East Dereham and nearby?
Yes. We cover East Dereham and nearby places including Attleborough, Bowthorpe, Norwich and Thetford. Send your postcode and we will confirm.
Most East Dereham PIV jobs are done in half a day, so ask about the next available date.
PIV near East Dereham
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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.