As long as the system spends most of its cycle time burning gas and blowing hot air, it isn't short cycling. Many apartment and condo units have furnaces that have very little "dead" time waiting for heating calls in between run cycles. I lived in one a number of years ago that I swear cycled fifteen or more times an hour. Vent 1 minute, light burner, blower kicks on, burner shuts off 2 minutes later, blower shuts off 1 minute later. 3 Minutes later, vent kicks on and here we go again. Not a well designed heating system.
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