Condensation and mould ventilation fixes
We find why the house is wet and fix the ventilation, rather than painting over mould.
From £425 inc VAT per fan
Mid Glamorgan · Wales
Ventilation in Treharris
Homes, rentals and business premises in Treharris and CF45, CF46 and CF82.
- Wales rates
- Free survey for new installs
- Airflow tested and recorded
Our team is based in Great Barr, Birmingham, about 85 miles from Treharris. We plan each Treharris job around the survey, so you get a fixed written price and an agreed date rather than an estimate on the day.
If you are extending or converting in Treharris, ventilation is part of Building Regulations sign-off. We can fit the fans or MVHR and provide the airflow test results your inspector will ask for.
Commercial work in Treharris is priced from a site visit or your drawings. Kitchen extract cleaning, LEV testing and servicing visits are priced per system.
Treharris at a glance
- Town
- Treharris, Mid Glamorgan
- Postcode districts
- CF45, CF46 and CF82
- Nearby
- Nelson (1 mile), Gelligaer (2 miles), Mountain Ash (3 miles) and Bargoed (3 miles)
- Price region
- Wales
- Rules
- Wales
- Distance from our base
- about 85 miles
Services in Treharris
Ventilation for landlords and letting agents
Tested fans and PIV for rental homes and HMOs, with records for your property file.
From £1,425 inc VAT per property
Commercial ventilation design and installation
Supply and extract with heat recovery for offices, shops, clinics and fit-outs.
From £7,550 + VAT per system
Commercial kitchen extraction
Canopies, extract fans, make-up air and gas interlocks for cafés and restaurants.
From £5,650 + VAT per kitchen
- Duct cleaning (TR19 Grease and Air)
- Ventilation repairs and fault finding
- MVHR installation
- MVHR servicing and filter changes
- Positive input ventilation (PIV)
- Extractor fan installation
- Commercial heat recovery
- Ductwork
- Car park ventilation
- LEV
- Servicing contracts
- dMEV fans
- Single-room heat recovery
- Social housing
- Air quality surveys
- New builds & extensions
- Airflow testing
- Air handling units
Guide prices in Treharris
| Work | Guide price |
|---|---|
| Continuous-running extract fan (dMEV) with humidity boost, flow tested (per fan) | £330–£575 inc VAT |
| Rental upgrade: PIV unit plus two humidity-controlled extract fans (typical 2 to 3 bed) (per property) | £1,425–£2,550 inc VAT |
| TR19 Grease kitchen extract clean with post-clean report, single canopy system (per clean) | £375–£850 + VAT |
| Kitchen canopy and extract system for a café or takeaway (canopy up to 2 m) (per kitchen) | £5,650–£11,350 + VAT |
Guide prices using Wales 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.
Rules in Wales
In Wales, the Welsh Government's own Approved Document F (2022 edition) applies to ventilation in homes, with a new edition taking effect on 4 March 2027. Rented homes must be fit for human habitation under the Renting Homes (Wales) Act 2016, and workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations 1992.
Questions from Treharris
What does ventilation work cost in Treharris?
It depends on the job. As a guide, like-for-like extractor fan replacement (existing duct and wiring) is typically £165 to £280 inc VAT per fan, using Wales rates.
Do you cover Treharris?
Yes. We cover Treharris (CF45, CF46 and CF82) and nearby places including Nelson, Gelligaer, Mountain Ash and Bargoed.
Is the survey free in Treharris?
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.
Nearby
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