Londonderry County · County Londonderry
Positive input ventilation (PIV) in Londonderry County
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Londonderry County and BT47 and BT48.
- From £725 inc VAT per home
- By arrangement
PIV is often a good fix for Londonderry County homes with condensation on every window.
For positive input ventilation (PIV) in Londonderry County, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Londonderry County at a glance
- Town
- Londonderry County, County Londonderry
- Postcode districts
- BT47 and BT48
- Nearby
- Derry (under a mile), Strabane (14 miles) and Limavady (15 miles)
- 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.
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 Londonderry County
| 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 |
Northern Ireland rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job. Travel is quoted separately for this area.
Signs it is time to call us
- Streaming windows on most mornings in winter
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
Rules that apply in Northern Ireland
In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Extract rates follow the Northern Ireland guidance and are measured at handover.
Questions from Londonderry County
Is the survey free in Londonderry County?
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.
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.
How do I get a price for a PIV unit in Londonderry County?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
What area around Londonderry County do you work in?
All of County Londonderry. Near Londonderry County that includes Derry, Strabane and Limavady.
PIV near Londonderry County
More services in Londonderry County
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.