Simple installation - remove and replace. Anyone should be able to do this themselves if they can operate a screwdriver and a pair of pliers. I was replacing a Watkins No-Fault which has a pressure relief wire that feeds into the mainboard. This is not needed with the new heater but it will not work unless you jump the mainboard connector. Please - don't let this intimidate you. Just cut the old wire from your defective heater, maybe 3-4 inches after the board interface plug. Clear and strip the wires and twist them together - install a wire nut or solder and tape if you like. Plug back into the appropriate receptor and all is go. You cannot get this wrong.

Worked AOK. I’ve replaced the heater in my hot springs jet setter at least two times. This one the heater lasted a year and a half.

PN BX5951A

Complete plug and play. It was a two wire and the original one was a three wire and all I had to do was create a jumper out of one of the plugs from the older heater. Took me 15 minutes to install it.

Ever so slightly longer than the OEM part I replaced (@1/4") so the holes for mounting were off. Not a big deal but the equipment cabinet is also not a great space to be working in. These newer heaters come without the 'onboard pressure switch/third grey wire'(now obsolete) of my original 2012. I didn't see the explanation on the Spadepot site(may have missed it) but you need to clip the molded plug from your old heater leaving an inch or two of wire, strip the red and black wires/twist them together, and reinstall on the circuit board where it originally went to 'jump/bypass/?" something in order for the heater/tub to work.

Super friendly customer service. Had a problem with the payment on the website super nice sales lady took my order on the phone. The heater was a direct fit. Easy to install. Working great.