Home ventilation, Cumbria
Positive input ventilation (PIV) in Cumbria
Loft or wall units that gently push filtered air into the home to tackle condensation, across Cumbria.
- From £750 inc VAT per home
- Free survey

Condensation in Cumbria homes usually has one of two answers: better extract fans, or PIV as well.
We carry out positive input ventilation (PIV) across Cumbria, including Workington, Penrith, Ulverston, Carlisle and Barrow-in-Furness. Prices use North West rates. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Cumbria at a glance
- Area
- Cumbria
- Towns listed
- 7, largest Carlisle
- Postcode districts
- LA8, LA9, CA24, CA25, CA14 and CA15
- Price region
- North West
- Survey
- Free survey (UK mainland)
What the work involves
PIV works well in houses and flats with general condensation on windows and cold walls. 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.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Guide prices in Cumbria
| 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.
Common reasons people call
- 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 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.
How the job runs
- Survey
- Fixed quote
- Install
- Set up
- Hand over
Towns we cover in Cumbria
Questions about positive input ventilation (PIV) in Cumbria
Which towns in Cumbria do you cover?
All of Cumbria, including Workington, Penrith, Ulverston, Carlisle and Barrow-in-Furness. If your town is not listed, send the postcode and we will confirm.
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.
Are prices different in Cumbria?
Our guide prices are adjusted by region. In Cumbria we use North West rates, so positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,325 inc VAT per home.
Is the survey free in Cumbria?
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.
Book a free Cumbria survey and we will say honestly whether PIV, extract fans or both are needed.
Other services in Cumbria
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