Holyhead, Gwynedd and Anglesey
Positive input ventilation (PIV) in Holyhead
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Holyhead and LL65.
- From £750 inc VAT per home
- Free survey

Condensation in Holyhead homes usually has one of two answers: better extract fans, or PIV as well.
For positive input ventilation (PIV) in Holyhead, 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 Holyhead at a glance
- Town
- Holyhead, Gwynedd and Anglesey
- Postcode districts
- LL65
- Nearby
- Bangor (22 miles)
- Price region
- Wales
- Survey
- Free survey (UK mainland)
How we approach PIV in Holyhead
Loft air is usually a little warmer and drier than outside air, and the unit filters it before it comes down into the house. 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.
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 Holyhead
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £750–£1,325 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £950–£1,600 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £140–£280 inc VAT |
Wales rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
When to get it looked at
- 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 that apply in Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
Questions from Holyhead
Do you cover Holyhead and nearby?
Yes. We cover Holyhead and nearby places including Bangor. Send your postcode and we will confirm.
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.
What is the price of a PIV unit in Holyhead?
Guide prices for Holyhead use Wales rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,325 inc VAT per home. We confirm a fixed price in writing before any work starts.
Is the survey free in Holyhead?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Most Holyhead PIV jobs are done in half a day, so ask about the next available date.
PIV near Holyhead
More services in Holyhead
Get a guide price in two minutes
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.