Home ventilation, Northumberland
Positive input ventilation (PIV) in Northumberland
Loft or wall units that gently push filtered air into the home to tackle condensation, across Northumberland.
- From £725 inc VAT per home
- Free survey

PIV is often a good fix for Northumberland homes with condensation on every window.
Every job in Northumberland gets a written quote before it starts and a commissioning record when it finishes. We cover Prudhoe, Berwick-upon-Tweed, Blyth, Cramlington and Ashington and the villages around them.
PIV in Northumberland at a glance
- Area
- Northumberland
- Towns listed
- 10, largest Blyth
- Postcode districts
- TD15, NE44, NE45, NE5, NE13 and NE22
- Price region
- North East
- Survey
- Free survey (UK mainland)
What positive input ventilation (PIV) involves
Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole. 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.
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.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Northumberland
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £725–£1,275 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £925–£1,550 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £135–£270 inc VAT |
Guide prices using North East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
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 Northumberland
Questions about positive input ventilation (PIV) in Northumberland
Are prices different in Northumberland?
Our guide prices are adjusted by region. In Northumberland we use North East rates, so positive input ventilation (PIV) loft unit, supplied and fitted is typically £725 to £1,275 inc VAT per home.
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.
Is the survey free in Northumberland?
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.
Which rules apply to ventilation in Northumberland?
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Send a photo of your loft hatch area and landing ceiling for a quicker Northumberland quote.
Other services in Northumberland
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