Hartley, Kent
Positive input ventilation (PIV) in Hartley
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Hartley and DA3, DA4 and DA13.
- From £875 inc VAT per home
- Free survey

We fit loft and wall-mounted PIV units across Hartley, after checking the house first.
For positive input ventilation (PIV) in Hartley, send us the postcode, a few photos and a rough idea of the rooms involved. We will tell you what we would fit and roughly what it costs before arranging a visit.
PIV in Hartley at a glance
- Town
- Hartley, Kent
- Postcode districts
- DA3, DA4 and DA13
- Nearby
- Longfield (1 mile), Swanscombe (4 miles) and Gravesend (5 miles)
- Price region
- South East
- Survey
- Free survey (UK mainland)
PIV for Hartley homes
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
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.
Guide prices in Hartley
| 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.
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 Hartley
How do I get a price for a PIV unit in Hartley?
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 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.
What area around Hartley do you work in?
All of Kent. Near Hartley that includes Longfield, Swanscombe, Gravesend and Dartford.
Do you cover Hartley and nearby?
Yes. We cover Hartley and nearby places including Longfield, Swanscombe, Gravesend and Dartford. Send your postcode and we will confirm.
Most Hartley PIV jobs are done in half a day, so ask about the next available date.
PIV near Hartley
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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.