Call for immediate furnace repair if you smell gas anywhere near your heating system, hear banging or grinding noises coming from the furnace, or notice that your furnace is blowing cold air when it should be heating. These are signs of potentially serious problems that can get worse quickly and leave you without heat entirely.
Other urgent warning signs include yellow flames instead of blue flames in gas furnaces, frequent cycling on and off, or unusual odors like burning plastic or metal. If your carbon monoxide detector goes off, turn off your furnace immediately, ventilate your home, and call for emergency service – this is a serious safety issue that requires professional attention.
Don’t ignore problems that seem minor, like uneven heating between rooms or higher than usual energy bills. These often indicate developing issues that are much cheaper to fix now than after they cause a complete system failure. Connecticut winters don’t give you second chances when heating systems fail, so it’s better to address problems early.