Hot Spring Spas 1500w Heater - replaces 1989 - 1994 heaters with capillary thermostats

Hot Spring Spas 1500w circulation heater replacement kit for models pre 1994 with copper capillary high limit thermostats

replaces ALL older large grey plastic body heaters with coiled elements on pre 1994 models (not models with electronic temp sensors threaded into the heater)

3/4" barbs for tubing connection 
Re-use existing plug / connection 
High limit bulb in the original heater must be cable tied to the outlet side tube on the new heater.

*As Hot Spring spas generally have no flow/pressure switch protection, its extremely important that you ensure water has flooded the heater and is flowing through the plumbing (primed) after installation and after every drain/refill. 
Failure of the heater due to 'Dry Running' will likely result if the heater has not properly primed. 
This is not a manufacturing defect and therefore not a warranty covered failure. 

This heater kit is for spa models with copper capillary thermostats and includes the following: 
2 x Cap-Off Plugs with o-rings to close the electronic sensor holes (fitted in place as per image) 
3/4" clear tubing x 2  
6 x 3/4" spring loaded pressure clamps (wire type) 
Barbed coupling fittings X 2