John, the reason why the WP FL has rating of 159 KWH is because of software programming. Coincidentally my old Duet also had a similar KWH rating all the way back to 2011. First of all, on the Duet most common cycles had the heater automatically maintain and boost wash water temperatures. I suspect the current WP & Maytag still have the same appropach. Cycles that did automatically have th heater come on was Bulky, Whites, Heavy Duty, Sanitize. Normal and Delicate the heater didn't come on. Currently, the heaeter may come on at highest soil levels for Wrinkle Free, but I don't know for sure. Also, the Duet heated warm water between 95 & 100F. Hot wash was 125F-127F. Allergene was between 131F & 133F. Contrast those temps with my LG. The heater will come on to reach target temp and once that is reaached, the heateer turns off and doesn't come back on. Those cycles are Whites, Bulky, Towels, and Perm Press. For warm target temp ranges from 89F to 94F. Hot ranges from 104F to 112F. For Normal & Heavy Duty cycles, the heater does not come on at all for warm or hot water temps. (by design). Whatevr the temperature is once fill is complete is what the wash water temps is and begins to decline from there. For these two cycles, if Extra Hot is selected, there's no specific target temp except highest temp before heater turns of is 158F (allergene is 161F-163F). As I've said before, 90F classified as warm is marginal at best. The thought of "hot" being 112 is abysmal and disgusting. With button pushing, I am thankful I can reach temperatures I find acceptable for warm or hot.