Prenton, Merseyside
Positive input ventilation (PIV) in Prenton
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Prenton and CH41, CH42 and CH43.
- From £750 inc VAT per home
- Free survey

Condensation in Prenton homes usually has one of two answers: better extract fans, or PIV as well.
Work in Prenton follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Prenton at a glance
- Town
- Prenton, Merseyside
- Postcode districts
- CH41, CH42 and CH43
- Nearby
- Bebington (2 miles), Birkenhead (2 miles) and Heswall (3 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
What the work involves
It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source. On survey we check the loft, the landing position and the existing fans, and we tell you if PIV is not the right answer.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Prenton
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £750–£1,325 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £950–£1,600 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£280 inc VAT |
Guide prices using North 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
- 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
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 Prenton
What area around Prenton do you work in?
All of Merseyside. Near Prenton that includes Bebington, Birkenhead, Heswall and Bromborough.
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 Prenton and nearby?
Yes. We cover Prenton and nearby places including Bebington, Birkenhead, Heswall and Bromborough. Send your postcode and we will confirm.
What is the price of a PIV unit in Prenton?
Guide prices for Prenton use North West rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,325 inc VAT per home. We confirm a fixed price in writing before any work starts.
We will check the existing fans in your Prenton home at the same visit, because PIV works best with them working.
PIV near Prenton
More services in Prenton
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