Longfield, Kent
Positive input ventilation (PIV) in Longfield
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Longfield and DA3, DA4 and DA13.
- From £875 inc VAT per home
- Free survey
Condensation in Longfield homes usually has one of two answers: better extract fans, or PIV as well.
We cover Longfield and the surrounding DA3, DA4 and DA13 postcodes as part of our work across Kent. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Longfield at a glance
- Town
- Longfield, Kent
- Postcode districts
- DA3, DA4 and DA13
- Nearby
- Hartley (1 mile), Swanscombe (4 miles) and Gravesend (4 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Longfield homes
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.
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 Longfield
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £875–£1,525 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,100–£1,875 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £160–£325 inc VAT |
Guide prices using South East rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
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 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 Longfield
How do I get a price for a PIV unit in Longfield?
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 Longfield do you work in?
All of Kent. Near Longfield that includes Hartley, Swanscombe, Gravesend and Dartford.
Do you cover Longfield and nearby?
Yes. We cover Longfield and nearby places including Hartley, Swanscombe, Gravesend and Dartford. Send your postcode and we will confirm.
Send a photo of your loft hatch area and landing ceiling for a quicker Longfield quote.
PIV near Longfield
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.