Monmouth, Gwent
Positive input ventilation (PIV) in Monmouth
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Monmouth and GL16 and NP25.
- From £750 inc VAT per home
- Free survey
If your Monmouth flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Customers in Monmouth can get a guide price online in a couple of minutes. It uses Wales rates, which is what we would charge for the same job anywhere in Gwent. The survey is free for new installations on the UK mainland, and the quote that follows is fixed and in writing.
PIV in Monmouth at a glance
- Town
- Monmouth, Gwent
- Postcode districts
- GL16 and NP25
- Nearby
- Chepstow (12 miles), Abergavenny (13 miles) and Pontypool (16 miles)
- Price region
- Wales
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Monmouth
| 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 |
Guide prices using Wales rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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 that apply in Wales
In Wales, ventilation follows the Welsh Approved Document F rather than the English version, with building control checking notifiable work. We design to the Welsh rates and commission mechanical systems so the results can be recorded.
Questions from Monmouth
Is the survey free in Monmouth?
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.
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.
How do I get a price for a PIV unit in Monmouth?
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 Monmouth do you work in?
All of Gwent. Near Monmouth that includes Chepstow, Abergavenny, Pontypool and Cwmbran.
Most Monmouth PIV jobs are done in half a day, so ask about the next available date.
PIV near Monmouth
More services in Monmouth
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.