HVAC System Contractor

What Are Some Signs My Furnace Isn’t Working Properly?

Furnace Repair ExpertYour furnace might exhibit telltale signs of possible malfunctions that require appropriate action, beyond your scheduled furnace maintenance and inspection. Irregular and unusual noises, odors, flames and heating comprise furnace warning signs that efficient furnace operation is not achieved. Appropriate action can save your furnace from more complicated problems, as well as ensure your safety.

Warning signs

  • Furnace age

Relatively new furnaces operate noiselessly and without awkward smells. The older your furnace is, the more some of its parts wear out and the more its efficiency declines. Cleaning filters or replacing them, ensuring there is no obstructed airflow (no materials block or clog vents) and lubricating furnace parts can increase the efficiency of your old furnace, as well as prolong its life. During your annual or other scheduled furnace inspection, more serious problems can be detected and rectified in time to prevent further damage or the complete breakdown of your furnace when you need it most.

  • Irregular thermostat reading

If your thermostat’s readings indicate a change without any detectable change in indoor air temperature, either your thermostat is broken, or your furnace is not working as it should. If your furnace goes on or off without interference or thermostat regulation, have an HVAC technician check both. Abrupt breakdowns indicate a faulty furnace. If and when, no matter how much your furnace runs or the degree set on your thermostat, there is no heating in your premises, it is a sign that your furnace is not functioning properly.

  • Smells and noises

The running of your furnace should not wreck havoc on your nerves. If and when your furnace makes creaking, knocking or other unusual or loud noises that disturb your peace, you can be sure your furnace is not functioning properly. Strange odors, from your furnace, are also a sign that the furnace is not in perfect shape, and its efficiency is compromised. At times, you may be able to identify the source of the noise or odor, and even rectify the problem, but most often, you need to contact an HVAC professional.


Regular inspection of your furnace detects parts of the furnace that need servicing. Furnaces may also exhibit signs that everything is not okay. Such warning signs include, but are not limited to, irregular heating, abnormal sounds or smells and constant breakdowns. Contact your local HVAC contractor for a thorough check-up of your furnace and other HVAC needs.

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