Bath, Somerset
Positive input ventilation (PIV) in Bath
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Bath and BA1, BA2 and BA15.
- From £825 inc VAT per home
- Free survey
PIV is often a good fix for Bath homes with condensation on every window.
Work in Bath follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Bath at a glance
- Town
- Bath, Somerset
- Postcode districts
- BA1, BA2 and BA15
- Nearby
- Keynsham (6 miles), Neston (7 miles) and Trowbridge (8 miles)
- Price region
- South West
- Survey
- Free survey (UK mainland)
PIV for Bath 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.
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 Bath
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,450 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,025–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£305 inc VAT |
Guide prices using South West 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
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
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). It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Bath
Do you cover Bath and nearby?
Yes. We cover Bath and nearby places including Keynsham, Neston, Trowbridge and Midsomer Norton. Send your postcode and we will confirm.
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.
What is the price of a PIV unit in Bath?
Guide prices for Bath use South West rates: positive input ventilation (PIV) loft unit, supplied and fitted is typically £825 to £1,450 inc VAT per home. We confirm a fixed price in writing before any work starts.
Is the survey free in Bath?
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.
Book a free Bath survey and we will say honestly whether PIV, extract fans or both are needed.
PIV near Bath
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