Penzance, Cornwall
Positive input ventilation (PIV) in Penzance
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Penzance and TR17, TR18 and TR20.
- From £825 inc VAT per home
- Free survey
We fit loft and wall-mounted PIV units across Penzance, after checking the house first.
Work in Penzance follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Penzance at a glance
- Town
- Penzance, Cornwall
- Postcode districts
- TR17, TR18 and TR20
- Nearby
- Helston (12 miles), Camborne (12 miles) and Redruth (16 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
What the work involves
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. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.
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 Penzance
| 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
- 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). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Penzance
What area around Penzance do you work in?
All of Cornwall. Near Penzance that includes Helston, Camborne, Redruth and Falmouth.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
How much does PIV cost to install?
A loft-mounted PIV unit usually costs £795 to £1,395 including VAT supplied and fitted, and £995 to £1,695 for a wall-mounted unit in a flat. A heater module adds around £145 to £295.
Do you cover Penzance and nearby?
Yes. We cover Penzance and nearby places including Helston, Camborne, Redruth and Falmouth. Send your postcode and we will confirm.
What is the price of a PIV unit in Penzance?
Guide prices for Penzance 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.
Most Penzance PIV jobs are done in half a day, so ask about the next available date.
PIV near Penzance
More services in Penzance
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