After 13 months of ownership, it has stopped working. If you look at the warranty it says it has a one year warranty from its manufacturing date. Not the normal from date of purchase. So possibly one could purchase this unit with zero warranty.

Well, I found that you cant upgrade this unit to ANY other control. So if you get the two button and later want to upgrade. TOO BAD. If you get the 4 button and want to change, TOO BAD. I got delayed on my project because of availability on my contractor. So I had the heater for just short of two months still brand new in its box. When I found that this is not going to work for me, spadepot was unwilling to make any exception (even if I paid restocking, etc) to exchange it so I can buy something FROM THEM with better compatability. This is after someone on the phone said I could return it and sent me the instructions.

I had a very old control kit that is no longer available, the Balboa WH-MAS75-GCAK. Bought this, re-did some old plumbing, and hooked it up. Most of the wiring and plug-ins are easy and straightforward, but I did have a few questions which Ryan quickly answered. The hot tub is now running again, exactly as before, no glitches or hassles. I can't speak to the unit's durability yet, of course, but so far it's running great. Considering that my hot tub is about 25 years old, I'm very pleased with how smooth the upgrade process was. I had to improvise a little here and there, but nothing major.

Had a 20 year old Jaccuzi hot tub. The pump ran but it stopped heating. We did some trouble shooting and the heater wasn't getting any power which meant a bad control circuit board. Tyler from Spa Depot helped me choose the right pack. This one isn't as pretty as the other digital units but he recommended it over them because it had more flexibility in installation for my situation (didn't hurt that it was also a little less expensive). The footprint of the box is smaller than my original unit AND the heater can be seperated from it allowing more installation options. It went in perfectly and almost everything was plug and play. You may even be able to use your old temperture sensors but make sure you take pictures of your existing circuit board and all the connections before you disconnect anything. The only down side to the new circuit board is that it does not have terminal connections inside for the 220V like the old one did. It just has wires coming out, but I robbed the plastic covered terminal connector block from the old unit and used it in the new one. Worked fine. With that said, if you're not an electrictian and not comfortable working around 220, no shame in having an electrictian do the power hookup. Another thing I liked about the Spa Depot was I originally put in an order for just a replacement circuit board and was also going to replace the heater just to be on the safe side, but they held my order and contacted me. Rather than replacing the heater and circuit board, they pointed out that buying the pump pack kit was the exact same cost and it added a replacement topside control unit, sensors, wire harness and supplied a lot of extra parts. Recommend this unit and Spa Depot's excellent staff.