Best Tankless Water Heater Elements for Efficient Hot Water Supply
Choosing the right tankless water heater element can dramatically improve heat delivery, efficiency, and reliability. This guide highlights five compatible heater elements designed to fit popular EcoSmart, Rheem, Eemax, Richmond, and iHeat/Drakken models. Each option focuses on a 9KW 240V class, with variants supporting 18KW, 27KW, and 36KW as needed. Read on to compare compatibility, installation ease, and durability to keep your system running smoothly.
| Product | Brand | Compatible Models | Power / Voltage | Notes |
|---|---|---|---|---|
| HE 90240 Heating Element Upgrade, 3 Pack | Lisnhlin | Ecosmart ECO 18/24/27/36; Eemax iHeat/Drakken; Rheem; Richmond | 9KW / 240V | 3-pack; includes O-ring; screw-in design |
| Upgrade HE 90240 Heating Element, 2 Pack | ATEEfaee | Ecosmart ECO 18/24/27/36; Eemax HA036240, PR036240; Rheem RTEX/RETEX; Richmond RMTEX | 9KW / 240V | Includes O-ring and screw; compatible with many models |
| HE 90240 Water Heater Element 2PCS | Lisnhlin | Ecosmart ECO 18/24/27/36; iHeat/Drakken; Eemax; Rheem; Richmond | 9KW / 240V | 2-pack; notes broad compatibility |
| HE 90240 Water Heater Element 9000W | zuverlass | Ecosmart ECO 27/18/36; Rheem RTEX/RETEX; Richmond RMTEX | 9KW / 240V | Long-lasting copper with antioxidant coating |
| HE 90240 Heating Element, 3 Pack | JURPLIX | EcoSmart, Eemax, iHeat/Drakken, Rheem, Richmond | 9KW / 240V | 3-pack; copper; oxidation-resistant coating |
Across options, these elements share a common goal: reliable and swift heating with robust build quality. They are designed for straightforward screw-in installation and include necessary O-rings or gaskets to prevent leaks. Compatibility varies by model family, so verify your water heater’s model number before purchase. The selections emphasize copper construction, oxidation resistance, and broad cross-compatibility to minimize downtime and maintenance costs.
HE 90240 Heating Element Upgrade (3 Pack) Overview
The 90240 heating element is compatible with multiple EcoSmart models including ECO 18/24/27/36, and extends to several third-party tankless units such as Eemax iHeat/Drakken and Richmond/Rheem products. It is rated at 9KW at 240V and includes an O-ring gasket to prevent leaks. This package is ideal for batch replacements when routine maintenance is due or when diagnosing heating inefficiencies caused by degraded elements. Replacement may restore heating speed and temperature consistency.
Upgrade HE 90240 Heating Element (2 Pack) Overview
This 2-pack offers a screw-in installation process and includes a new O-ring and screw. It is designed to replace the 80240 element and is compatible with EcoSmart ECO 18/24/27/36, along with a broad list of Eemax, Rheem, and Richmond models. It aims to deliver improved heat delivery where warming times are prolonged due to worn-out elements, reducing maintenance costs and downtime.
HE 90240 Water Heater Element 2PCS Overview
This 2-pack version covers EcoSmart ECO 18/24/27/36 and includes cross-compatibility with iHeat/Drakken, Eemax, Rheem, and Richmond lineups. It is described as a reliable replacement for failed 90240 elements, addressing issues such as insufficient heat, long heating times, and low water temperatures. The kit includes the core element and compatible sealing components to minimize leaks and ensure a tight fit.
HE 90240 9000W Element Overview
Designed for EcoSmart ECO 27/18/36 and compatible with Rheem RTEX/RETEX and Richmond RMTEX lines, this element is rated at 9000W at 240V. It uses copper construction and an antioxidant coating to improve durability and heat transfer. The component is positioned for instant heat responsiveness and stable temperature control, with enhanced resistance to corrosion and mineral buildup, extending the service life of the tankless system.
HE 90240 3 Pack for EcoSmart and More Overview
This 3-pack provides broad compatibility with EcoSmart ECO 18/24/27/36, Eemax, iHeat/Drakken, Rheem, and Richmond models. It features 9KW 240V copper elements with an oxidation-resistant coating and strong heat transfer properties. The set is intended for simultaneous or staggered replacements, offering flexibility for multi-node systems or spare parts for businesses managing several units.
Upgrade HE 90240 3 Pack Overview
This 3-pack offers screw-in installation with included O-ring and screw. It is compatible with Ecosmart ECO series, Eemax HA and PR series, Rheem RTEX/RETEX, and Richmond RMTEX families, among others. The copper construction with antioxidant coating supports efficient heat transfer, corrosion resistance, and durable operation in demanding household or commercial uses. The set is suitable for users replacing multiple units or stocking spare parts.
Buying Guide: Key Purchase Considerations
- Compatibility: Confirm your heater’s model family (EcoSmart ECO versions, Rheem RTEX/RETEX, Richmond RMTEX, Eemax iHeat/Drakken, etc.) before purchasing. The 90240 element is widely compatible but verify model numbers to avoid mismatch.
- Power and Voltage: Most options are 9KW at 240V, with some packs offering cross-compatibility for higher KW variants. Match the element’s specifications to your heater’s electrical capacity and circuit rating.
- Installation Ease: Many products advertise screw-in installation and include O-rings or gaskets. A simple replacement minimizes downtime; for some models, you may need basic tools and a gasket sealant.
- Durability: Copper elements with antioxidant coatings improve heat transfer and corrosion resistance. Look for elements with leak-proof O-rings and long operating lifespans in mineral-rich water conditions.
- Part Availability: Packs (2-pack or 3-pack) offer cost efficiency and readiness for future maintenance, especially in homes with multiple tankless units.
- Warranty and Support: Check product listings for warranty details and seller support, which can be beneficial for troubleshooting installation issues or model compatibility questions.
- Cross-Brand Compatibility: If you own a mixed-brand system, prioritize elements marketed as compatible across Ecosmart, Eemax, Rheem, and Richmond families to simplify sourcing.
- Maintenance Impact: Replacing a worn element promptly can restore heating efficiency, reduce energy usage, and prevent overheating or inconsistent water temperatures.
In selecting a replacement element, prioritize precise compatibility for your specific model, reliable construction materials, and installation ease. For households with multiple tankless units or service technicians, multi-pack options can reduce downtime and inventory costs while maintaining consistent hot-water performance. Always follow the manufacturer’s installation guidelines and consult a professional if electrical or plumbing work exceeds your experience level.