Home ventilation, Lothians
Positive input ventilation (PIV) in the Lothians
Loft or wall units that gently push filtered air into the home to tackle condensation, across the Lothians.
- From £775 inc VAT per home
- Free survey

PIV can suit Lothians houses and flats because it treats the whole home from one quiet unit.
The Lothians has every kind of building, from old terraces to new estates and business parks, and every job is designed around the building in front of us, not a standard kit.
PIV in the Lothians at a glance
- Area
- Lothians, Scotland
- Towns listed
- 13, largest Livingston
- Postcode districts
- EH33, EH47, EH48, EH40, EH42 and EH52
- Price region
- Scotland
- Survey
- Free survey (UK mainland)
How we do it
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.
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.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in the Lothians
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £775–£1,350 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £950–£1,625 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£285 inc VAT |
Scotland 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
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
Rules in Scotland
Scottish projects follow the Technical Handbooks (section 3, Environment) under the Building (Scotland) Regulations, usually with a building warrant. Extract and whole-home rates are designed to the Scottish standards and measured at handover.
How the job runs
- Survey
- Fixed quote
- Install
- Set up
- Hand over
Towns we cover in the Lothians
- Livingston
- Musselburgh
- Bathgate
- Bonnyrigg
- Penicuik
- Broxburn
- Mayfield
- Linlithgow
- Armadale
- Dalkeith
- Tranent
- Whitburn
- Dunbar
Questions about positive input ventilation (PIV) in the Lothians
Is the survey free in the Lothians?
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.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
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.
Which rules apply to ventilation in the Lothians?
In Scotland, ventilation is covered by section 3 of the Building Standards Technical Handbooks. Private rented homes must meet the Repairing Standard, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Which towns in the Lothians do you cover?
All of the Lothians, including Linlithgow, Livingston, Musselburgh, Bathgate and Bonnyrigg. If your town is not listed, send the postcode and we will confirm.
We will check the existing fans in your Lothians home at the same visit, because PIV works best with them working.
Other services in the Lothians
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.