Combi Boiler

A Combi Boiler is a central heating boiler and water heater combined into one packaged unit. There is usually no seperate hot water cylinder. No additional water storage tank or F&E(Feed and Expansion tank). Where space is limited combi boilers are usually fitted. In the past they were usually suited to flats and small properties. However large combi and storage combi’s have emerged that can meet the requirements of larger homes. Technical sizing and specification requirements still have to be done to determine suitability.

The only drawbacks of a combi boiler is that no backup immersion heater is available. Additionally if an important components goes down you could be without both hot water and heating. An electric shower can be fitted if a backup is required.

If you are looking for more information on combi boilers or looking for installation, please feel free to contact us.


Recommended Products for Maximum Life

For a combi boiler’s life to be prolonged, we recommend the installation of the items shown below. We have preferences of what we install, however as long as an equivalent is installed, it’s perfectly ok.

Controls – Preferred choice is direct modulating controls otherwise Nest Thermostat or Tado
Central Heating Filter – Preferred choice Fernox Omega TF1
Central Heating De-aerator – Preferred choice Spironvent RV2
DHW Expansion vessel mini – Preferred choice Caleffi Mechanical Shock arrestor
Limescale Prevention – Preferred choice is water softener. At minimum, an Inline Magnetic Limescale Filter


Faultfinding section

Disclaimer: Information on this website is provided for informational purpose therefore we cannot accept liability for subsequent problems. All repair tasks should be carried out by qualified trades people. We may also receive commission payments when you are taken to external websites and complete purchases from third party sellers, once you leave our site, we cannot be held liable for your purchases.