The answer to 'how to fix boiler' is to first identify the specific issue with your boiler. Common problems include pilot light issues, water leaks, strange noises, or the boiler not turning on. Once you've identified the problem, you can take steps to fix it, such as relighting the pilot light, tightening fittings, or resetting the boiler. However, if the issue is more complex or you're not comfortable working on the boiler, it's best to call a professional HVAC technician to diagnose and repair the problem.
Boilers are complex systems that require proper maintenance and care to function safely and efficiently. Regular tune-ups and inspections by a qualified technician are recommended to prevent issues and ensure your boiler is operating at its best.