Getting the hot tub heater out of peak usage

Device: Pool Heater
Make: Mecana
Estimated Savings:
Using Sense, I found one of my big usages was a hot tub heater which came on randomly every several hours (and a lot more in the winter, as expected). I purchased an ECO WiFi power switch box with a timer that allows me to turn off the heater during peak periods, and I shifted to turning on the heater in the super off peak beginning of the day before 6 am when electricity costs 7 cents a Kw hour.