It can be certainly discouraging dealing with a boiler that is not heating your space as expected, and in most cases, such a boiler has a serious issue that needs to be rectified, more often than not, it is not something you can fix on your own plus may require the services of an Heating plus Air Conditioning serviceman or Heating plus Air Conditioning supplier. It is even more complicated if the boiler is a gas heater. To fix it, one has to open the registers. This will be the first thing the Heating plus Air Conditioning serviceman will check, especially if you have youngsters. They are likely to close most of them as they play, leading to a buildup of heat in the heater. This, in turn, causes the boiler to overheat plus trigger a abrupt shutoff, periodically even unexpectedly… Sadly, closed vents in registers can cause more troubles than just overheating. They are likely to trigger system breakdown plus worsen existing leaks since they tend to force the boiler to labor harder than it should. The Heating plus Air Conditioning professional will also check the boiler settings plus wash the control unit, a slight deviation from the typical setting may direct the boiler to act differently when it shouldn’t, then be careful not to miss it as the control component accumulates dust. Always wash the control component plus ask the Heating plus Air Conditioning serviceman in charge of the occasional tune-ups to do the same when they come for the session. It is also essential to check the boiler power… Whenever the circuit breaker is off, the boiler tends to shut down plus not heat as expected. If you are correct with such electric works, please leave it to the serviceman .