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What are the top 5 reported problems with residential furnaces?

1. Wear and tear

Normal wear and tear can cause airflow problems, heat control-related problems or even overheating.

2. The furnace is too noisy

Rumbling, squeaking and rattling aren’t normal. The sounds may indicate a mechanical problem, airflow reductions or a clogged burner.

3. The blower continuously runs

Blower issues may indicate a problem with the limit switch, which a professional may need to replace.

4. The furnace doesn’t heat at all

A furnace that doesn’t perform its main task may have problems with the thermostat setting, power, gas or the pilot light.

5. Frequent cycling

Cycling between the “On” and “Off” modes may indicate a clogged filter, improper airflow or a bad thermostat setting.