Positive input ventilation (PIV) in County Armagh

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

Our team is based in Great Barr, Birmingham, and we work throughout County Armagh, from Craigavon, Portadown and Armagh. Visits here are by arrangement: we quote travel separately and in writing before you commit.

PIV in County Armagh at a glance

Area: County Armagh, Northern Ireland
Towns listed: 3, largest Craigavon
Postcode districts: BT63, BT60, BT61, BT64, BT65 and BT62
Price region: Northern Ireland
Survey: By arrangement, travel quoted first

What positive input ventilation (PIV) 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.

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 County Armagh

Positive input ventilation (PIV) guide prices in County Armagh
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

You have no loft but still need whole-flat ventilation (wall unit)
Streaming windows on most mornings in winter
Black mould on window reveals and in corners of bedrooms

Rules in Northern Ireland

Northern Ireland has its own building regulations, with ventilation guidance in Technical Booklet K. We design to the Northern Ireland guidance and measure the airflow achieved.

How the job runs

Survey
Fixed quote
Install
Set up
Hand over

Towns we cover in County Armagh

Questions about positive input ventilation (PIV) in County Armagh

Are prices different in County Armagh?

Our guide prices are adjusted by region. In County Armagh 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.

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.

Is the survey free in County Armagh?

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 Armagh?

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.