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 heaters parts of 2026
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Best Choice1
RelianceReliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters
Key specs-
product dimensions: 12W x 8H
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item weight: 1.94 pounds
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batteries included: No
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item model number: 9007884005
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best sellers rank: 100,890 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 118 in Water Heater Replacement Parts
9.9Exceptional
Our Rating
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Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
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Value for Money2
HYDRO MASTERHYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass
Key specs-
product dimensions:N/A
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item weight:3.75 pounds
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batteries included:No
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item model number:0560301
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best sellers rank:#5,732 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #2 in Water Heater Replacement Parts
9.8Exceptional
Our Rating
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3
NISHCONEWH-00 Water Heater Thermostat, Electric Water Heater Thermostat For Double Element Heater, Include Upper And Lower Element Thermosatat, Water Heater Replacement Parts Fit For Most Water Heaters
9.5Excellent
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4
DROMIXEWH-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
Key specs-
product dimensions:N/A
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item weight: 1.61 pounds
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batteries included: No
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item model number: EWH-01
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best sellers rank: 22,393 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 9 in Water Heater Replacement Parts
9.4Excellent
Our Rating
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5
NISHCONNISHCON EWH-01 Electric Water Heater Tune-Up Kit, Water Heater Parts Fit for Most Electric Water Heaters, Includes 2× Heater Elements - 4500W 240V (3500W@208V), Upper & Lower Heater Thermostat
9.3Excellent
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6
DROMIXEWH-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
Key specs-
product dimensions:N/A
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item weight: 2.72 pounds
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batteries included: No
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item model number: EWH-03
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best sellers rank: 32,377 in Tools & Home Improvement See Top 100 in Tools & Home Improvement 15 in Water Heater Replacement Parts
9.2Excellent
Our Rating
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7
SEDIMENT GONESediment Gone™ Water Heater Sediment Removal Tool – Flushes, Cleans & Breaks Up Sediment Clogs in Electric or Gas Water Heaters – Easy DIY Water Heater Cleaning Tool
19% Off Limited Time Deal9.1Excellent
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8
ONENESS 369Oneness 369 RV Water Heater Anode Rod 2-Pack, Galvanized 9.25”x3/4” NPT
Key specs-
product dimensions: 9.25 x 1 x 1 inches
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exterior: Smooth
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item weight: 12.5 ounces
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special features: Our anode rod comes with a one-year warranty, guaranteeing reliability and top performance for your RV's hot water system. Choose our product for optimal protection and maintenance of your RV water heater
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oem part number: 232767, 233514
9.0Excellent
Our Rating
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9
YIGUCS100112330 Water Heater Pilot Assembly 9007876 Fit for AO Smith/Whirlpool
8.9Very Good
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10
KAINGAKAINGA Tankless Water Heater Service Valve Kit, 3/4 Inch IPS Isolator Set with Pressure Relief Valve, Hot & Cold Shut-Off Valves, Lead-Free Premium Brass, Compatible with Rheem, Rinnai, Navien
8.8Very Good
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