
Built-up dust and residue on this MAHLE heat exchanger reduce thermal efficiency and can contribute to performance issues if left unchecked.
These aren't just dirty parts — they're warning signs. Clogged heat exchangers, neglected filters and contaminated components all lead to inefficiency, breakdowns and potential safety risks.
Our servicing is designed to spot and address these problems early, keeping your boiler running smoothly and protecting your investment.
- Preventative servicing for boilers and heat exchangers.
- Commercial appliance maintenance support for kitchens and catering environments.
- Gas Safe diagnostics to catch issues before they escalate.
Book your service today and experience the Plumb-On difference — where precision meets prevention.

Residue buildup in commercial and domestic appliances poses hygiene risks and can affect performance — regular maintenance keeps everything working as intended.