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I ALMOST agree with every one else. There is only one statement I take issue with, but the poster disclaimed it by useing the word "arguably" in front of the rest of the statement. None the less, This whole pump number and hp thing just astounds me. If you really want to research this, find a pool builder that DOESNOT sell spas. Ask him to show you a 6 hp pump. You will soon realize that the sheer weight and size of a pump of that size is prohibitive in use in a self contained spa. A true 6 hp motor, WITHOUT the wet end is about 2 feet in length, add the wet end and now the complete pump is 2'6" now add the discharge and suction plumbing and the dang thing will never fit inside a cabinet. However, if you like their sales presentation and you think the product will work for you, then buy the thing, just be sure you realize what you are buying.
I do not know about Master spas but the HP numbers on the Beachcomber are continuous HP. Not Break HP like Bob declared.
How many pumps should a hot tub have.
The Beachcomber hot tubs I tested (580 and 750) will not far well with all of the jets on and the foot jets on. You definitely notice a reduction in power. If all of the jets are on and not the foot jets then you do not notice any power issues, but with the foot jets and the all the seats on it is a more mellow massage. But I still bought the Beachcomber.
I do not know about Master spas but the HP numbers on the Beachcomber are continious HP. Not Break HP like Bob declared.