Helston, Cornwall
Positive input ventilation (PIV) in Helston
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Helston and TR12 and TR13.
- From £825 inc VAT per home
- Free survey
PIV can suit Helston houses and flats because it treats the whole home from one quiet unit.
For positive input ventilation (PIV) in Helston, 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 Helston at a glance
- Town
- Helston, Cornwall
- Postcode districts
- TR12 and TR13
- Nearby
- Camborne (8 miles), Redruth (9 miles) and Falmouth (10 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
PIV for Helston homes
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.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in Helston
| 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.
Common reasons people call
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Helston
What is the price of a PIV unit in Helston?
Guide prices for Helston use South West rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £825 to £1,450 inc VAT per home. We confirm a fixed price in writing before any work starts.
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.
Is the survey free in Helston?
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.
How do I get a price for a PIV unit in Helston?
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.
Send a photo of your loft hatch area and landing ceiling for a quicker Helston quote.
PIV near Helston
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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.