Failing Heat Exchanger

With Boise and the Treasure Valley in the fall season, and winter right around the corner, homeowners need to be aware of how their HVAC system is performing so that it doesn’t break down and leave them in the cold this winter. A common failure experienced with these systems in the fall and winter is the breakdown of the heat exchanger due to thermal fatigue.

When metals are heated and cooled repeatedly in a heater exchanger, it can weaken the metal over time and create a crack. This will create failure in the HVAC system over time no matter what, but the degree to which the metal in the heat exchanger is subjected to thermal fatigue can be dependent on a few factors, such as:

  • How often the metal is heated and cooled
  • How quickly the temperature changes
  • The composition of the metal

If a crack in the heat exchanger is not discovered in a timely manner, toxic fumes like carbon monoxide can leak out into the air and can lead to illness and even death. To protect your home and family it’s a good idea to install carbon monoxide detectors.

All HVAC heat exchangers will eventually endure thermal fatigue and need to be replaced. However, with proper maintenance they can last quite a long time.

When Diamond Heating and Cooling completes the annual furnace maintenance for their customers, one of the first components they examine is the heat exchanger. Since it is something that can commonly fail and bring harm to the household if undetected, they want to check it and ensure household safety. Diamond Heating and Cooling also provides free second opinions for those who have been told they have a crack in their heat exchanger.

Now’s the time to get the furnace inspected and serviced. Talk to Diamond Heating and Cooling about their Silver Club Membership too. It’s a cost-effective way to ensure the HVAC system gets serviced twice a year. Visit the Diamond Heating and Cooling website to learn more.


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