How do I maintain water quality in my combi boiler?

Maintaining water quality in a combi boiler is essential for its efficient and safe operation. The water in the boiler should be free from contaminants such as minerals, debris, and bacteria, which can cause corrosion, blockages, and other issues. Here are some steps you can take to maintain water quality in your combi boiler:

Check the water pressure:

The water pressure in a combi boiler should be between 1 and 1.5 bar. Low or high water pressure can lead to problems with the boiler’s performance and potentially damage the heating system. You should regularly check the water pressure gauge and top up the system with water if needed.

Use a water softener:

As mentioned in the previous article, hard water can cause limescale buildup in the boiler and reduce its efficiency. A water softener can remove the minerals from the water and prevent such issues.

Install a water filter:

A water filter can remove impurities and debris from the water before it enters the boiler. It can also prevent corrosion and extend the lifespan of the heating system. Make sure to choose a filter that is compatible with your combi boiler and change the filter cartridge as needed.

Perform regular maintenance:

Regular maintenance of the combi boiler can help maintain water quality. You should have the boiler serviced by a qualified engineer at least once a year to ensure it is operating safely and efficiently. The engineer will clean the heat exchanger, check the pressure, and test the safety features of the boiler.

Bleed the radiators:

Air can accumulate in the radiators, causing them to heat unevenly and reduce the efficiency of the heating system. You can bleed the radiators by opening the valve at the top and releasing the air until water flows out. You should do this once or twice a year.

Use inhibitor:

A central heating inhibitor is a chemical that is added to the water to prevent corrosion and scale buildup in the heating system. It is recommended to add inhibitor to the water when the system is installed and to top up the inhibitor levels as needed.

Check for leaks:

Leaks in the heating system can cause water contamination and reduce the efficiency of the boiler. You should regularly check for leaks in the pipes, valves, and radiators, and have them repaired as soon as possible.

By following these steps, you can maintain water quality in your combi boiler and ensure its efficient and safe operation. It is important to note that water quality can vary depending on your location, so you should consult a qualified engineer for advice on how to maintain your heating system.