Bishop's Stortford, Hertfordshire
Positive input ventilation (PIV) in Bishop's Stortford
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Bishop's Stortford and CM22, CM23 and CM24.
- From £825 inc VAT per home
- Free survey
For a typical Bishop's Stortford semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
We cover Bishop's Stortford and the surrounding CM22, CM23 and CM24 postcodes as part of our work across Hertfordshire. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Bishop's Stortford at a glance
- Town
- Bishop's Stortford, Hertfordshire
- Postcode districts
- CM22, CM23 and CM24
- Nearby
- Harlow (7 miles), Ware (9 miles) and Hoddesdon (10 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
What the work involves
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.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Bishop's Stortford
| 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
- 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. 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 Bishop's Stortford
What area around Bishop's Stortford do you work in?
All of Hertfordshire. Near Bishop's Stortford that includes Harlow, Ware, Hoddesdon and Saffron Walden.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
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.
Do you cover Bishop's Stortford and nearby?
Yes. We cover Bishop's Stortford and nearby places including Harlow, Ware, Hoddesdon and Saffron Walden. Send your postcode and we will confirm.
What is the price of a PIV unit in Bishop's Stortford?
Guide prices for Bishop's Stortford use East of England rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £825 to £1,475 inc VAT per home. We confirm a fixed price in writing before any work starts.
We will check the existing fans in your Bishop's Stortford home at the same visit, because PIV works best with them working.
PIV near Bishop's Stortford
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