Belmont, Greater London
Positive input ventilation (PIV) in Belmont
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Belmont and SM1, SM2 and SM7.
- From £950 inc VAT per home
- Free survey
If your Belmont 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 Belmont 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 Belmont at a glance
- Town
- Belmont, Greater London
- Postcode districts
- SM1, SM2 and SM7
- Nearby
- Sutton (under a mile), Banstead (2 miles) and Cheam (2 miles)
- Price region
- London
- Survey
- Free survey (UK mainland)
What the work involves
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.
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 Belmont
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,200–£2,025 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £175–£355 inc VAT |
Guide prices using London rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- Black mould on window reveals and in corners of bedrooms
- Musty smell in wardrobes or behind furniture
- The house feels stuffy and damp rather than cold
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. 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 Belmont
How do I get a price for a PIV unit in Belmont?
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.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
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.
What area around Belmont do you work in?
All of Greater London. Near Belmont that includes Sutton, Banstead, Cheam and Ewell.
Do you cover Belmont and nearby?
Yes. We cover Belmont and nearby places including Sutton, Banstead, Cheam and Ewell. Send your postcode and we will confirm.
Book a free Belmont survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Belmont
More services in Belmont
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.