Combi boiler reliability is of utmost importance today, especially when boiler manufacturers have been accused of manufacturing frail boilers that only last last long enough to cover their warranty period.
Reliability is not dependent on brand name, brand reputation, after-sales service, how many service engineers the brand has, or national pride.
Combi boiler reliability depends on the following factors:
- Quality of Internal Components
- Metal Type and Quality of the Heat Exchanger
- Do Heating Engineers like it?
- Boiler Manufacturer’s Experience in Central Heating
With those things in mind, let’s look at the most reliable combi boiler brands in the UK in 2019.
To understand combi boiler reliability, you need to understand how a combi boiler works first.