Heating and cooling is a business of extremes. During the first heat wave or cold snap the phones won't stop, and every competitor is advertising at once. A few weeks later, in mild weather, the same phones can go quiet. Both situations are marketing problems, and they call for different answers.
In peak season the goal is to be visible and reachable at the exact moment someone's system fails. In the shoulder seasons the goal shifts to tune-ups, maintenance agreements and planned replacements, the work that smooths out revenue. HVAC digital marketing done well plans for both ahead of time instead of reacting after the temperature changes.