Positive input ventilation (PIV) in County Tyrone

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

We carry out positive input ventilation (PIV) across County Tyrone, including Cookstown, Omagh, Strabane and Dungannon. Prices use Northern Ireland rates. Visits here are by arrangement: we quote travel separately and in writing before you commit.

PIV in County Tyrone at a glance

Area: County Tyrone, Northern Ireland
Towns listed: 4, largest Omagh
Postcode districts: BT70, BT71, BT80, BT78, BT79 and BT82
Price region: Northern Ireland
Survey: By arrangement, travel quoted first

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.

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 County Tyrone

Positive input ventilation (PIV) guide prices in County Tyrone
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 Northern Ireland rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first. Travel is quoted separately for this area.

Signs it is time to call us

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 Northern Ireland

Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. Extract rates follow the Northern Ireland guidance and are measured at handover.

How the job runs

Survey
Fixed quote
Install
Set up
Hand over

Towns we cover in County Tyrone

Questions about positive input ventilation (PIV) in County Tyrone

Are prices different in County Tyrone?

Our guide prices are adjusted by region. In County Tyrone we use Northern Ireland rates, so positive input ventilation (PIV) loft unit, supplied and fitted is typically £725 to £1,275 inc VAT per home.

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.

Is the survey free in County Tyrone?

Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.

Which rules apply to ventilation in County Tyrone?

In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.