Balboa heaters which use pressure switches are available in 1.5kw, 2kw, 3kw, 4kw and 5.5kw for the European market.
Complete assembly with pressure switch and seals. Part number 50139
Complete assembly with pressure switch and seals. Part number 50145 All of these numbers are for this same heater : 50145 50146 58122 50138
2006-Current. Used on Hotspring Hot Spot and Caldera spas. Generally uses the square pressure switch show below in accessories. Can also be found carrying a Balboa code 58287. See pictures fitted to a Hotspring Spa pack.