Mossley Hill, Merseyside
Positive input ventilation (PIV) in Mossley Hill
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Mossley Hill and L17, L18 and L19.
- From £750 inc VAT per home
- Free survey
Condensation in Mossley Hill homes usually has one of two answers: better extract fans, or PIV as well.
We cover Mossley Hill and the surrounding L17, L18 and L19 postcodes as part of our work across Merseyside. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Mossley Hill at a glance
- Town
- Mossley Hill, Merseyside
- Postcode districts
- L17, L18 and L19
- Nearby
- Allerton (1 mile), Wavertree (2 miles) and Childwall (2 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
How we approach PIV in Mossley Hill
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 Mossley Hill
| 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
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
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 Mossley Hill
Is the survey free in Mossley Hill?
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 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.
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 do I get a price for a PIV unit in Mossley Hill?
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.
What area around Mossley Hill do you work in?
All of Merseyside. Near Mossley Hill that includes Allerton, Wavertree, Childwall and Woolton.
Get a PIV guide price for your Mossley Hill home online, then confirm it on a free survey.
PIV near Mossley Hill
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