This replaces the entire tube assembly and heater element on older Balboa Heaters, with a pressure switch. These come in 2.0kW, 4.0kW, and 5.5kW. Originally had white unions, Do not use a larger heater size from the original! Tube is approximately 382mm long.
These suit early controllers, where a high-limit sensor is placed on the heater tube, while another temperature sensor is in the spa shell.
Do not confuse this with M7 heater assemblies (without pressure switch).
- New tube
- New pressure switch
- Heater Element