We bought a 2010 series Momentum 50 Master Spa. We had problems with the swim spa from the very start.
We were in contact with the dealer every few months and they came to fix the spa at least 6 times (2 hours drive each way), but the problems kept returning. The problem was largely that the swim spa area would heat up and we were not able to lower the temperature to a comfortable level. There was also a recurring problem with the propulsion system.
After 2.5 years, Master Spa decided to solve our problem permanently. They sent two service technicians from Wisconsin to Cape Cod, Massachusetts (20 hours drive) and they worked for two very long days to completely re-plumb our system.
It now works like a charm. They charged us NOTHING for this exceptional service, even though some of the repairs were out of warrantee.
To all the complainers I only have to say that Master Spa delivers on their commitment and stands behind their product. All it takes is patience and persistence and good record keeping, but that is true for all large purchases.
Reason of review: Good customer service.
Monetary Loss: $40000.