It's hard to believe, but winter is just around the corner, and with it comes a new wave of heating, ventilation and air-conditioning claims.
A common failure that aging HVAC systems suffer in fall and winter months is the breakdown of the heat exchanger because of thermal fatigue.
To some degree, all metals that are repeatedly heated and cooled are subject to thermal fatigue, a cyclic stress that weakens the metal to an eventual point of failure. The degree to which metals are affected by thermal fatigue includes such stressors as: How often the metal heats and cools, how quickly the temperature of the metal changes, and the composition of the metal.
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