Depending on the type of heating system, furnace or boiler, heating problems, as well as, their troubleshooting can differ. Most heating systems have similar parts, for example, thermostat or gas heater. Even if you can easily fix many possible problems, it is a good idea to have your central heating system serviced regularly by a licensed professional.
No heat. The first thing to check is thermostat. It can be set too low. If it is a programmable (digital) one, the timer or other settings can be wrong due to power outage in the past. Also it may be not working. Other possible reasons can be in furnace (boiler) module: circuit breaker or fuse is blown; the pilot light does not work; unusual flashing lights inside furnace or boiler, etc. If you do not know how to check and fix listed above, call experts.
Boiler problem: Noise. If your house is heated by conventional boiler, then there may be a lack of water in the water tank. Water gurgling. It indicates air in the pipes or radiators. Lack of water, as well as, air in central heating system can cause more serious problems that is why it is better to call heating specialist as soon as possible.
Boiler problem: Water leaking from heating pipes or from water tank. To avoid house flooding, immediately shut off the water supply and the water heater, and then call professional plumbers.