Garston, Cheshire
Positive input ventilation (PIV) in Garston
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Garston and L18, L19, L24 and L25.
- From £750 inc VAT per home
- Free survey

We fit loft and wall-mounted PIV units across Garston, after checking the house first.
Whether the property is in the middle of Garston 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 Garston at a glance
- Town
- Garston, Cheshire
- Postcode districts
- L18, L19, L24 and L25
- Nearby
- Hunts Cross (2 miles), Allerton (2 miles) and Speke (2 miles)
- Price region
- North West
- Survey
- Free survey (UK mainland)
PIV for Garston 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.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Guide prices in Garston
| 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 North West rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Common reasons people call
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
Rules that apply in England
In England, ventilation is covered by Part F of the Building Regulations and its guidance, Approved Document F (2021 edition). For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Garston
How do I get a price for a PIV unit in Garston?
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.
How long does PIV installation take?
A loft unit is normally fitted in two to four hours, including the diffuser and electrical connection.
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.
What area around Garston do you work in?
All of Cheshire. Near Garston that includes Hunts Cross, Allerton, Speke and Mossley Hill.
Do you cover Garston and nearby?
Yes. We cover Garston and nearby places including Hunts Cross, Allerton, Speke and Mossley Hill. Send your postcode and we will confirm.
Tell us whether your Garston home has a loft and we can price a PIV unit before visiting.
PIV near Garston
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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.