Prescot, Merseyside
Positive input ventilation (PIV) in Prescot
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Prescot and L34, L35 and L36.
- From £750 inc VAT per home
- Free survey
Condensation in Prescot homes usually has one of two answers: better extract fans, or PIV as well.
Whether the property is in the middle of Prescot or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Prescot at a glance
- Town
- Prescot, Merseyside
- Postcode districts
- L34, L35 and L36
- Nearby
- Whiston (1 mile), Rainhill (2 miles) and Huyton (2 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
How we approach PIV in Prescot
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 Prescot
| 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 |
North West rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
When to get it looked at
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
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 Prescot
How do I get a price for a PIV unit in Prescot?
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.
Does PIV really stop condensation?
PIV reduces condensation in most homes because it dilutes moist air and keeps it moving, but it works best alongside working extract fans in the kitchen and bathroom. Leaks, rising damp or a cold bridge need fixing separately.
How much does PIV cost to run?
A standard PIV unit uses very little electricity, comparable to a low-energy light bulb on normal speed. A heated unit costs more in cold spells because the heater switches on when loft air is cold.
What area around Prescot do you work in?
All of Merseyside. Near Prescot that includes Whiston, Rainhill, Huyton and St Helens.
Do you cover Prescot and nearby?
Yes. We cover Prescot and nearby places including Whiston, Rainhill, Huyton and St Helens. Send your postcode and we will confirm.
We will check the existing fans in your Prescot home at the same visit, because PIV works best with them working.
PIV near Prescot
More services in Prescot
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.