Positive input ventilation (PIV) in Mid Glamorgan

We fit loft and wall-mounted PIV units across Mid Glamorgan, after checking the house first.

Our team is based in Great Barr, Birmingham, and we work throughout Mid Glamorgan, from Aberdare, Maesteg, Rhondda, Tonypandy and Bridgend. We survey first, free of charge for new installations on the mainland, then send a fixed written quote.

PIV in Mid Glamorgan at a glance

Area: Mid Glamorgan, Wales
Towns listed: 14, largest Rhondda
Postcode districts: CF32, CF34, CF31, CF33, CF15 and CF38
Price region: Wales
Survey: Free survey (UK mainland)

How we do it

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. Flats without a loft use a wall-mounted unit that draws air from outside through a cored hole.

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.

Heated PIV

A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.

Guide prices in Mid Glamorgan

Positive input ventilation (PIV) guide prices in Mid Glamorgan
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

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 in Wales

Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. Extract rates and commissioning are checked against the Welsh guidance on every job.

How the job runs

Survey
Fixed quote
Install
Set up
Hand over

Towns we cover in Mid Glamorgan

Questions about positive input ventilation (PIV) in Mid Glamorgan

Is the survey free in Mid Glamorgan?

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.

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 long does PIV installation take?

A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.

Which rules apply to ventilation in Mid Glamorgan?

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.

Which towns in Mid Glamorgan do you cover?

All of Mid Glamorgan, including Aberdare, Maesteg, Rhondda, Tonypandy and Bridgend. If your town is not listed, send the postcode and we will confirm.

Most Mid Glamorgan PIV jobs are done in half a day, so ask about the next available date.