Bridport, Dorset
Positive input ventilation (PIV) in Bridport
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Bridport and DT6 and DT8.
- From £825 inc VAT per home
- Free survey
For a typical Bridport semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
For positive input ventilation (PIV) in Bridport, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Bridport at a glance
- Town
- Bridport, Dorset
- Postcode districts
- DT6 and DT8
- Nearby
- Chard (13 miles), Dorchester (14 miles) and Yeovil (15 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
What the work involves
Loft air is usually a little warmer and drier than outside air, and the unit filters it before it comes down into the house. Many units have a temperature sensor that reduces the flow or switches to a heater module on cold days, so the incoming air does not feel like a draught.
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 Bridport
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,025–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£305 inc VAT |
Guide prices using South West 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
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Bridport
Is the survey free in Bridport?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
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.
How do I get a price for a PIV unit in Bridport?
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.
What area around Bridport do you work in?
All of Dorset. Near Bridport that includes Chard, Dorchester, Yeovil and Weymouth.
Book a free Bridport survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Bridport
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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.