In a heat run the job is triage, and nobody has written the script for it
When the phone rings twice as often as your board can absorb, every booking becomes a judgment call, and untrained judgment is where your best jobs get lost.
Left alone, a phone under pressure books whoever called first and whoever was easiest to talk to. Neither is the job you most want, and one of them is fifteen minutes past the far edge of your service area.
Write the triage rules before the season, then hand them to whoever answers. Which conditions get today. What an existing maintenance customer is owed. What happens with an elderly customer with no cooling, which is a safety question and deserves an explicit rule rather than a shrug. Which calls get an honest offer of tomorrow instead of a soft promise for tonight.
Give the phone permission to say no clearly. Turning down a job outside your zone in thirty seconds is better for everybody than booking it, running it late, and eating the review. Log every one of those declines, because that list is your real service area.
Then measure what triage did. Booked jobs per hundred calls during the peak week, compared with a normal week. If the gap is large, the loss is on the phone, not in the field.