Boilers are built to last, but one of the biggest threats to their performance and lifespan is corrosion. Left untreated, corrosion can cause leaks, breakdowns, and costly repairs. The good news is that by understanding what causes boiler corrosion and how to prevent it, you can protect your heating system for years to come.
What Causes Boiler Corrosion?
Oxygen in the System
Oxygen entering your central heating system is the most common cause of boiler corrosion. When oxygen combines with water and metal, it creates rust, which gradually eats away at pipes, radiators, and the boiler itself.
Poor Water Quality
If your heating system water contains too many minerals or isn’t treated with the right chemicals, it can accelerate internal corrosion. Limescale build-up also makes the system less efficient, leading to higher energy bills and potential damage.
Leaks and Damp
Even small leaks from joints or valves can create external corrosion. Water exposure around the boiler casing or nearby pipework will eventually weaken the metal and compromise the system.
Neglected Servicing
Without regular servicing, problems like sludge build-up, faulty seals, or untreated water go unnoticed. Over time, these issues increase the likelihood of corrosion developing inside the boiler.
How to Prevent Boiler Corrosion
Annual Servicing
Booking regular maintenance is one of the most effective ways to prevent corrosion. A professional boiler service in Christchurch or boiler servicing in New Milton will ensure your system is thoroughly checked, cleaned, and treated with corrosion inhibitors where needed.
Water Treatment
Adding the correct chemicals to your heating system helps prevent oxygen and mineral build-up. Power flushing may also be recommended to remove sludge and rust already present in the system.
Prompt Repairs
If you spot a leak or notice unusual noises, don’t delay repairs. Timely boiler repairs in Christchurch prevent small issues from turning into costly problems and stop corrosion from spreading further.
Professional Installation
When installing a new boiler, a correct setup is essential for long-term reliability. Choosing expert boiler installation in New Milton ensures the system is fitted properly, with protective measures in place from day one.
Local Plumbing and Heating Support
At Armstrong Plumbing and Heating, our team provides professional boiler services in Christchurch and New Milton, covering everything from installation and servicing to urgent repairs.
Contact us today to book your service and keep your heating system in excellent condition.