Home ventilation, Powys
Positive input ventilation (PIV) in Powys
Loft or wall units that gently push filtered air into the home to tackle condensation, across Powys.
- From £750 inc VAT per home
- Free survey
Condensation in Powys homes usually has one of two answers: better extract fans, or PIV as well.
We carry out positive input ventilation (PIV) across Powys, including Newtown. Prices use Wales rates. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Powys at a glance
- Area
- Powys, Wales
- Towns listed
- 1, largest Newtown
- Postcode districts
- SY16
- Price region
- Wales
- Survey
- Free survey (UK mainland)
What the work involves
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. 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.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
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 Powys
| 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 |
These ranges use our Wales rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
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 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.
How the job runs
- Survey
- Fixed quote
- Install
- Set up
- Hand over
Towns we cover in Powys
Questions about positive input ventilation (PIV) in Powys
Which rules apply to ventilation in Powys?
In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
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.
Which towns in Powys do you cover?
All of Powys, including Newtown. If your town is not listed, send the postcode and we will confirm.
Are prices different in Powys?
Our guide prices are adjusted by region. In Powys we use Wales rates, so positive input ventilation (PIV) loft unit, supplied and fitted is typically £750 to £1,325 inc VAT per home.
Most Powys PIV jobs are done in half a day, so ask about the next available date.
Other services in Powys
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