Positive input ventilation (PIV) in Aberdeen and Aberdeenshire

If your Aberdeen and Aberdeenshire flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.

Aberdeen and Aberdeenshire 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 Aberdeen and Aberdeenshire at a glance

Area: Aberdeen and Aberdeenshire, Scotland
Towns listed: 8, largest Aberdeen
Postcode districts: AB41, AB10, AB11, AB42, AB10 and AB11
Price region: Scotland
Survey: Free survey (UK mainland)

What positive input ventilation (PIV) involves

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. PIV works well in houses and flats with general condensation on windows and cold walls.

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.

Loft-mounted PIV

The most common option for houses with a loft. Usually fitted in half a day.

Guide prices in Aberdeen and Aberdeenshire

Positive input ventilation (PIV) guide prices in Aberdeen and Aberdeenshire
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

Guide prices using Scotland rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.

When to get it looked at

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 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 Aberdeen and Aberdeenshire

Questions about positive input ventilation (PIV) in Aberdeen and Aberdeenshire

Which rules apply to ventilation in Aberdeen and Aberdeenshire?

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.

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.

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.

Which towns in Aberdeen and Aberdeenshire do you cover?

All of Aberdeen and Aberdeenshire, including Inverurie, Fraserburgh, Westhill, Stonehaven and Ellon. If your town is not listed, send the postcode and we will confirm.

Are prices different in Aberdeen and Aberdeenshire?

Our guide prices are adjusted by region. In Aberdeen and Aberdeenshire we use Scotland rates, so positive input ventilation (PIV) loft unit, supplied and fitted is typically £775 to £1,350 inc VAT per home.

We will check the existing fans in your Aberdeen and Aberdeenshire home at the same visit, because PIV works best with them working.