What Is a Freeze-Thaw Cycle?
A freeze-thaw cycle is the repeated swing across the freezing point that's typical of the Western Suburbs of Chicago's humid-continental climate, rather than a steady, consistently cold winter. That repeated expansion and contraction places extra mechanical stress on outdoor equipment and condensate drainage.
Why It Matters to You
Chicago-area HVAC equipment experiences more of this specific type of mechanical stress than equipment in a milder or more consistently cold climate, which is exactly why seasonal maintenance matters more here.
Practical Guidance
Schedule a furnace check before the coldest part of winter — catching freeze-thaw-related wear (like a vulnerable condensate line) during a routine visit is easier than a mid-winter emergency call.
Related Terms
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