This 1500 watt heater element was used on all 1980-1994 Hot Spring spa models that operated on 115v. (have a power cord that plugs into an outlet). This heater element, located inside of a stainless steel cylinder style housing, is an immersion type heater. A single 1.5 kw heater element is used in 115 volt model spas. The end of the heater element has a place (dry well) where the copper probe from the heater hi-limit inserts into the end of the heater element. Some folks have mistakenly cut the copper wire off believing it to be a simple ground wire which in turn ruins the heater hi-limit probe.

Models	Serial # Range	Years
All 115v models		1980-1994
Diagram of parts

Note: This square flanged heater element is secured into the heater body using four nuts and bolts. An o-ring and gasket (not included) are used to prevent water from leaking between the heater and heater body.

Technical Specs: 115 Volt AC, 1.5 kW, 13 Amps


AKA-31225 SIU J98 TH 90646 110V 1500W
TH 34387 110v 1500w