Check the listing for details. 76228 Hot Spring Heater Assembly Titanium - 4 kW. Condition: New. Listed at 563.64 USD. Titanium Heater Assembly, 4 kW This contains a no fault heater with a pressure switch wire replacement 4kW to plug onto the P34 port in the motherboard. The heater also provides new thermistor O-rings. The IQ 2020 system that is included alerts you with a green light and a red light displayed when the heater has shut down. Compatible with a variety of the 2003 to current Hot Spring Highlife, Limelight, and Tiger River spa models. Specifications Make Model Date Range Hot Spring Grandee 2005-2018 Hot Spring Vista 2004-2013 Hot Spring Envoy 2004-2018 Hot Spring Vanguard 2014-Current Hot Spring Grandee NXT 2014-Current Hot Spring Envoy NXT 2014-Current Hot Spring Aria 2007-Current Limelight Pulse 2008-Current Limelight Gleam 2013-2017 Limelight Flair 2008-Current Limelight Glow 2008-2017