It is a perfect size and shape for my deck.  Fewer jets than most but for a portable tub it has nice power.  Max heat is104.  But, once you turn on the jets, things do cool down.  We get about 30 minutes of use before it cools down to about 101...leave the jets off or only in your spot (you can spin the dial on the jet heads) and you get more time at a higher temp.  I am very happy with the plug and play...took about 36 hours to heat up.  Super easy!  :)