The answer to 'my boiler keeps shutting off' is that there could be several common causes, including a problem with the thermostat, low water pressure, a faulty safety switch, or a malfunctioning boiler component. Symptoms may include the boiler cycling on and off frequently, not heating the home effectively, or completely shutting down.
If the boiler is shutting off regularly, it's best to have a professional HVAC technician inspect the system. They can diagnose the specific issue and provide the appropriate repair or replacement. While some basic troubleshooting like checking the thermostat settings or resetting the boiler may be possible as a DIY task, any major repairs or replacements should be handled by a licensed and experienced HVAC professional for safety and to ensure the problem is properly addressed.