Aberdare, Mid Glamorgan
Positive input ventilation (PIV) in Aberdare
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Aberdare and CF43, CF44 and CF48.
- From £750 inc VAT per home
- Free survey

If your Aberdare flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Whether the property is in the middle of Aberdare or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
PIV in Aberdare at a glance
- Town
- Aberdare, Mid Glamorgan
- Postcode districts
- CF43, CF44 and CF48
- Nearby
- Mountain Ash (4 miles), Rhondda (4 miles) and Merthyr Tydfil (4 miles)
- Price region
- Wales
- Survey
- Free survey (UK mainland)
PIV for Aberdare homes
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.
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 Aberdare
| 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.
Signs it is time to call us
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
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 Aberdare
What area around Aberdare do you work in?
All of Mid Glamorgan. Near Aberdare that includes Mountain Ash, Rhondda, Merthyr Tydfil and Tonypandy.
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 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.
Do you cover Aberdare and nearby?
Yes. We cover Aberdare and nearby places including Mountain Ash, Rhondda, Merthyr Tydfil and Tonypandy. Send your postcode and we will confirm.
What is the price of a PIV unit in Aberdare?
Guide prices for Aberdare 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.
Get a PIV guide price for your Aberdare home online, then confirm it on a free survey.
PIV near Aberdare
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