Our rankings are generated through the algorithmic analysis of thousands of customer reviews about products, brands, merchant customer service levels, popularity trends, and more. We use advanced technology, including AI, to help process and organize this information at scale, supporting our analysis with greater speed and consistency. The rankings reflect our opinion and should be a good starting point for shopping.
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10 Best water heater replacement parts of 2026
Explore top picks
Best Choice1
Corro-Protec9.8Exceptional
Corro-Protec Powered Anode Rod for Water Heater
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is electric:‎Yes
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color:‎Black
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batteries included:‎No
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special feature:‎Certified by the Water Quality Association
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item model number:‎CP-R
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Value for Money2
Reliance9.7Exceptional
Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters
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is electric:N/A
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color:N/A
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batteries included: No
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special feature:N/A
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item model number: 9007884005
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3
DROMIX9.6Exceptional
EWH-01 Electric Water Heater Tune-Up Kit, Includes Two Water Heater Thermostats, Two Water Heater Heating Elements - 4500W 240V, T-O-D Style Thermostat, Water Heater Replacement Parts
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is electric:N/A
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color: EWH-01
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batteries included: No
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special feature:N/A
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item model number: EWH-01
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4
Reliance9.5Excellent
Reliance Water Heater 100109136 Electric Water Heater Plumber Repair Pack, Includes 1 Each Upper Thermostat, 1 set
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5
Eemax9.4Excellent
Eemax EX410 Element for MB004120T - 120V Electric Tankless Water Heater
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6
yrjns9.3Excellent
44" Flexible Magnesium Anode Rod, Hot Water Heater Anode Rod Replace for GE, Rheem, Reliance, Richmond, Kenmore Water Heater Including 1-1/16" Hex Socket Tool and Teflon Tape
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7
HYDRO MASTER9.2Excellent
HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass
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is electric:N/A
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color:‎multi-color
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batteries included:‎No
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special feature:N/A
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item model number:‎0560301
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8
Reliance9.0Excellent
Reliance Gas Thermopile Assembly 100112330 Water Heater Pilot Assembly Compatible with Reliance, State, A.O. Smith, and American Branded Heaters
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9
DROMIX8.9Very Good
EWH-03 Electric Water Heater Tune-Up Kit with Element Wrench, Includes Upper & Lower Heater Thermostat, 2x Heater Elements - 4500W 240V (3500W@208V), 1 x Element Wrench, Water Heater Replacement Parts
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is electric:N/A
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color: EWH-03
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batteries included: No
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special feature:N/A
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item model number: EWH-03
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10
Holdly8.8Very Good
SP20172 Flammable Vapor FV Sensor Kit | AP13447-3 - 25VS | Water Heater Flammable Vapor Sensor Replacement Parts for Rheem, Ruud, Richmond FVIR Water Heaters
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