Birkenhead, Merseyside
Positive input ventilation (PIV) in Birkenhead
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Birkenhead and CH41, CH42, CH43 and CH46.
- From £750 inc VAT per home
- Free survey
For a typical Birkenhead semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Customers in Birkenhead can get a guide price online in a couple of minutes. It uses North West rates, which is what we would charge for the same job anywhere in Merseyside. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Birkenhead at a glance
- Town
- Birkenhead, Merseyside
- Postcode districts
- CH41, CH42, CH43, CH46 and CH49
- Nearby
- Liverpool (2 miles), Prenton (2 miles) and Dingle (2 miles)
- Price region
- North 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.
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 Birkenhead
| 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 |
These ranges use our North West rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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
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 Birkenhead
What area around Birkenhead do you work in?
All of Merseyside. Near Birkenhead that includes Liverpool, Prenton, Dingle and Kensington.
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 Birkenhead and nearby?
Yes. We cover Birkenhead and nearby places including Liverpool, Prenton, Dingle and Kensington. Send your postcode and we will confirm.
What is the price of a PIV unit in Birkenhead?
Guide prices for Birkenhead 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 Birkenhead home at the same visit, because PIV works best with them working.
PIV near Birkenhead
More services in Birkenhead
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.