Positive input ventilation (PIV)
Loft or wall units that gently push filtered air into the home to tackle condensation.
Greater London · England
Homes, rentals and business premises in Lee and SE3, SE12 and SE13.
We cover Lee (SE3, SE12 and SE13) as part of our work across Greater London. We can help homeowners, landlords and businesses with new systems, testing, cleaning and repairs.
Landlords in Lee can book a whole-property check: fans tested, trickle vents looked at and a written list of what to fix, which is useful evidence if a tenant reports damp or mould.
Commercial work in Lee is priced from a site visit or your drawings. Kitchen extract cleaning, LEV testing and servicing visits are priced per system.
Loft or wall units that gently push filtered air into the home to tackle condensation.
Bathroom, kitchen and utility fans sized to the Part F rates, ducted outside and tested.
We find why the house is wet and fix the ventilation, rather than painting over mould.
Tested fans and PIV for rental homes and HMOs, with records for your property file.
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £950–£1,675 inc VAT |
| Whole-home MVHR retrofit, 3 bedroom house (per home) | £7,750–£11,350 inc VAT |
| Condensation and mould ventilation survey with written findings (per home) | £150–£270 inc VAT |
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £415–£725 inc VAT |
Guide prices using London rates. Home prices include VAT at 20%; business prices exclude VAT. A guide price is not a quote: we confirm a fixed price in writing first.
In England, ventilation in new and altered homes is covered by Approved Document F of the Building Regulations. Landlords also have duties under the Housing Health and Safety Rating System, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Our team is based in Great Barr, Birmingham, about 111 miles away. Every visit is booked by appointment and confirmed in writing.
It depends on the job. As a guide, positive input ventilation (PIV) loft unit, supplied and fitted is typically £950 to £1,675 inc VAT per home, using London rates.
Yes. We cover Lee (SE3, SE12 and SE13) and nearby places including Blackheath, Ladywell, Kidbrooke and Catford.
Answer a few questions for a price range, or send photos and we will come back to you with a written quote.