Chelmsford, Essex
Positive input ventilation (PIV) in Chelmsford
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Chelmsford and CM1, CM2 and CM3.
- From £825 inc VAT per home
- Free survey
Condensation in Chelmsford homes usually has one of two answers: better extract fans, or PIV as well.
Customers in Chelmsford 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 Essex. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Chelmsford at a glance
- Town
- Chelmsford, Essex
- Postcode districts
- CM1, CM2 and CM3
- Nearby
- Billericay (8 miles), Witham (8 miles) and Maldon (9 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
PIV for Chelmsford homes
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.
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 Chelmsford
| 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 |
These ranges use our East of England rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). 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 Chelmsford
What area around Chelmsford do you work in?
All of Essex. Near Chelmsford that includes Billericay, Witham, Maldon and Wickford.
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 Chelmsford and nearby?
Yes. We cover Chelmsford and nearby places including Billericay, Witham, Maldon and Wickford. Send your postcode and we will confirm.
What is the price of a PIV unit in Chelmsford?
Guide prices for Chelmsford 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.
Get a PIV guide price for your Chelmsford home online, then confirm it on a free survey.
PIV near Chelmsford
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