Just seems to increment the compressor on time by one second.

and the flip side, compressor on.
What are you trying to do? You know that the time in seconds is epoch time, correct?
use the power draw increase of a motor start to determine when it started, and the drop in power to determine when it stopped, to tell the run time of the motor.
Okay....The problem is, the first rule is going to run every time the power is greater 15, not just the first. and the second is going to run every time the power is less than 15, not just the first. The rules are not thresholds that once violated do not execute again but instead are conditional. It triggers if the reading is below (or above depending on which you pick) the value you enter. You have to use PB to get it to only happen once. I would do this in one rule also.
Trigger: Power level of Fan CHANGED
Action:
If Power level of Fan is > 15 and PB is false
Do you variable setting and your variable math
Set PB to True
Else If Power Level of fan is <15 and PB is True
Do the rest of your variable setting and math
Set Private Boolean to False
End-If
It was just one rule, the two snaps where the flip side of the equation.
I am quite sure that what you posted will work, I could not figure out the PB aspect of it. This will be the first try at PB for me. Down the rabbit hole I go!
And very much thank you for your help, with this, and the overall efforts that I see you put forth on this group. It is why I do not put the atbravnel in the post. B needs to keep working on this fantastic HA setup. The community members like you do a bang up job of answering the communitys "stoooopid" questions.
No problem. Glad to help. I think the rule will just function better if you don't have the wait in there since it is going to trigger multiple times. When that happens, the previous wait gets canceled. You can only have one wait at a time. That's why you were only ever seeing this report 1 minute.
And the only stupid question is the one you have to ask 12 times. If you haven't gotten it by then, review answers 1-11 again. hehe
(and for those that have no sense of humor, that was a joke...as noted by the winking tongue face)
final revision seems to work great!
Thanks Again.
My pleasure.