Home ventilation, County Antrim
Positive input ventilation (PIV) in County Antrim
Loft or wall units that gently push filtered air into the home to tackle condensation, across County Antrim.
- From £725 inc VAT per home
- By arrangement
For a typical County Antrim semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Every job in County Antrim gets a written quote before it starts and a commissioning record when it finishes. We cover Carrickfergus, Ballymena, Antrim, Larne and Belfast and the villages around them.
PIV in County Antrim at a glance
- Area
- County Antrim, Northern Ireland
- Towns listed
- 7, largest Belfast
- Postcode districts
- BT37, BT42, BT43, BT41, BT40 and BT1
- Price region
- Northern Ireland
- Survey
- By arrangement, travel quoted first
What the work 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 County Antrim
| 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 |
These ranges use our Northern Ireland rates. Prices include VAT at 20%. You get a fixed written price before any work is booked. Travel is quoted separately for this area.
Common reasons people call
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
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 Antrim
Questions about positive input ventilation (PIV) in County Antrim
Are prices different in County Antrim?
Our guide prices are adjusted by region. In County Antrim 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.
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.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
Is the survey free in County Antrim?
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 Antrim?
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.
Other services in County Antrim
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