What are the features of a good boiler?

A good boiler should have high energy efficiency to minimize fuel consumption and reduce operating costs. It should also offer reliable safety features, such as pressure relief valves and automatic shut-off mechanisms, to prevent accidents. Additionally, ease of maintenance and access to parts are important for long-term usability, while a compact design can save space in installation areas. Lastly, good customer service and warranty options from the manufacturer enhance overall satisfaction.