OK, I see. Not exactly the 911 type of "emergency" I was envisioning, but I can see how you'd probably want warmer water for that.Hahaha - 4 grandsons coming by for the weekend when the water temp is in the 70's! ...
To tell you the truth I was visualizing more of an emergency situation where someone might slip and fall into the pool and it was too cold to go in and rescue them so you'd quickly flip on the emergency heater so you could comfortably go in after them once the water warmed up enough.