Darlington, County Durham
Positive input ventilation (PIV) in Darlington
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Darlington and DL1, DL2 and DL3.
- From £725 inc VAT per home
- Free survey

Condensation in Darlington homes usually has one of two answers: better extract fans, or PIV as well.
Whether the property is in the middle of Darlington 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 Darlington at a glance
- Town
- Darlington, County Durham
- Postcode districts
- DL1, DL2 and DL3
- Nearby
- Newton Aycliffe (7 miles), Yarm (8 miles) and Stockton-on-Tees (10 miles)
- Price region
- North East
- Survey
- Free survey (UK mainland)
PIV for Darlington 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 Darlington
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £725–£1,275 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £925–£1,550 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £135–£270 inc VAT |
Guide prices using North East 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
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 Darlington
What area around Darlington do you work in?
All of County Durham. Near Darlington that includes Newton Aycliffe, Yarm, Stockton-on-Tees and Thornaby-on-Tees.
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.
Do you cover Darlington and nearby?
Yes. We cover Darlington and nearby places including Newton Aycliffe, Yarm, Stockton-on-Tees and Thornaby-on-Tees. Send your postcode and we will confirm.
What is the price of a PIV unit in Darlington?
Guide prices for Darlington use North East rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £725 to £1,275 inc VAT per home. We confirm a fixed price in writing before any work starts.
Most Darlington PIV jobs are done in half a day, so ask about the next available date.
PIV near Darlington
More services in Darlington
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