What Would Cause a Furnace to Overheat?

October 27, 2020

What Would Cause a Furnace to Overheat?

What Would Cause a Furnace to Overheat?

Is your furnace continuously turning on and off, and the burning smell isn’t going away? If yes and your house isn’t getting warm, then this could be a clear sign of overheating your heating system.

Don’t ignore this problem! Read this blog to learn about 5 (five) possible reasons your furnace might overheat.

Restricted Airflow

Your furnace’s internal components can become too hot when there’s poor air circulation. It usually happens when you forget to change your air filter regularly. The air filter traps dust and other air pollutants to prevent clogging your furnace’s ventilation. Once it gets blocked, the airflow gets impeded, making the furnace work harder and become hot.

Unclean Internal Components

If your air filter gets clogged, the dust and contaminants cover your furnace’s components. The coil can become covered with grime, stopping the heat ex-changer from moving heat. Also, the blower motor is sensitive to dust and dirt—when it gets too dirty, it can’t ventilate itself and may overheat.

Short Cycling

Short cycling happens when your furnace turns on and off quickly or turns off early during the heating cycle. It stresses your furnace motors and prevents your home from warming up. Few issues cause short cycling. Some of them may be caused by:

  • A furnace that is too large for your house
  • Overheating
  • A malfunctioning thermostat

When it’s overheating, short cycling happens because the furnace is turning itself off to avoid damage to its motors. Once your heating system cools off, it can turn back on but suddenly overheat again.

Mechanical Failure

Your furnace’s electrical wiring and its fan blower can sustain a great deal of stress. It means your heating equipment could overheat because of a short circuit or inadequate circulation.

You can prevent this issue by scheduling regular furnace tune-ups to ensure that your furnace’s moving parts are in good working order. It also allows your trusted technicians to find signs of strain and premature wear. It’s always the best option to repair or replace mechanical components before they completely break down and damage their other parts.

Old Age

Nothing lasts forever. If your system is getting older (or rusty, unable to heat your home, or short-cycling), you may want to talk with your HVAC professional to learn about new options. Newer models are efficient and will run quieter, plus they have features that make your system more convenient to use.

Are you worried about the dangerous risks of your overheating furnace? Leave your worries to us. Our team of experts at Accu-Aire will provide the best solution for your furnace problem. Dial 609-733-5925 today or contact us online to get started!