Heating could take 4 to 8 hours.
That is what I read in the hot tub manual. It only took 45 minutes to fill it... but I'd have to be patient and wait to get in it.
At 10:30 we checked the hot tub and it was HOT!
I can't even tell you how worth the wait has been. A hot relaxing 45 minutes with just my husband... a little rain (which was great) and relaxation.
ah, so worth it.