The answer to 'why is my boiler' is that there could be several common causes, such as a faulty thermostat, low water pressure, or a problem with the pilot light or ignition system. Symptoms may include the boiler not heating up, strange noises, or leaks. Some simple solutions may be adjusting the thermostat, checking the water pressure, or relighting the pilot light. However, more complex issues like a malfunctioning heating element or pump may require a professional HVAC technician to diagnose and repair.
It's generally best to call in a professional HVAC technician if you're not comfortable troubleshooting the boiler yourself or if the problem persists after trying basic DIY fixes. An expert can properly identify the root cause and make the necessary repairs to get your boiler back up and running safely and efficiently.