【Compatible Water Heater Models】HE 90240 heating element Compatible with the following water heaters: for EcoSmart ECO 18, ECO 27, and ECO 36. For iHeat/Drakken AHS27D, AHS18D, AH27, AH18. For Eemax HomeAdvantage HA018240, HA027240, HA036240. For Eemax ProAdvantage PR018240, PR027240, PR036240. For Eemax EEM24018, EEM24027. EEM24036. For Rheem RTEX-18, RTEX-27, RTEX-36. Rheem RETEX-18, RETEX-27, RETEX-36. For Richmond RMTEX-18, RMTEX-27, RMTEX-36. 【High-quality Copper Material】This heating elementis constructed from copper tubing with anti-oxidation coating for good toughness, excellent thermal conductivity, efficient heat transfer, and non-corrosive property. Designed for long-lasting performance and stable quality. 【Easy Screw-in Installation】The tankless water heater element adopts screw-in construction, allowing routine maintenance in just a few minutes. With a standard O-ring gasket to better seal the heating element in the electric water heater tank. 【24 Hour Hot Water】HE 90240 heating element can effectively solve problems such as abnormal water pressure, low water temperature, long heating time and slow water flow rate due to damaged heating element. 【Quality Assurance】 Each of spare parts is engineered and tested to rigorous standards. For anything you are not satisfied with, we will offer 100% refund. 【Comapatible with】for Ecosmart 18 27 36 water heater element.