Water Heater Parts of 2025

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Last Updated - June 7, 2025

Best Choice

1

Ranein
Ranein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater

20% Off

9.5 worth the money

9.1 Easy installation

8.7 Long life

Why we love it

Instant hot water on demand.

Easy installation with included vent pipe.

Energy-efficient with reduced heat loss.
Main highlights

Continuous_Hot_Water_Availability
Provides up to 3.6 GPM, supporting multiple outlets simultaneously.

Ideal_for_Multi-Point_Households
Perfect for homes needing hot water in bathrooms, kitchens, and bars.

Ease_of_Installation_Praised
Customers love the straightforward installation and setup process.
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9.8

Exceptional

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How do we rank?

Using our advanced technology, we scan thousands of products and stores, analyzing reviews, ratings, and trends to find what matters most to users like you.

Our team then reviews the data and real user feedback, combining AI and human insights to bring you real-time, top-rated recommendations to guide your decisions with clarity and confidence.
Value for Money

2

Chromex
Chromex Tankless Water Heater Flush Kit with Gallon Liquid Descaling Solution and 1/6HP Extra Strength Pump

9.9 Easy installation

9.7 Simple to use

9.5 Instruction
Main highlights

Works with most all tankless water heaters such as Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra, Navien, Ecosmart, Stiebel, Eccotemp, Atmor, Trutankless, Marey Power, and others. ChromeX manufactures thoughtful tools and accessories for both the do-it-yourselfer and the professional. Customer satisfaction is our main priority, so please don’t hesitate to contact us with any questions or concerns. All Chromex products also come with a 1 Year warranty and hassle-free returns.
Works with most all tankless water heaters such as Rinnai, Bosch, Noritz, Rheem, Takagi, Tempra, Navien, Ecosmart, Stiebel, Eccotemp, Atmor, Trutankless, Marey Power, and others.
Our cleaning solution removes scale deposits from tankless water heaters, which helps improve its efficacy and lifespan. Its citric acid based, and solvent free formula is safe for use with most metals, PVC, Rubber and ABS plastic hoses and materials. Its also non corrosive and safe for potable water systems.
6 Piece Tank-less Water Heater Flush Kit. Helps maintain and extend the lifespan of your tank-less water heater. Kit comes with 5 gallon bucket with lid, 1/6 HP Pump, 2 High quality stainless steel hoses, descaler solution.
6 Foot hoses easily connect to tankless heater valves, and the kit will clean most heaters in 30 minutes or less! Usage instructions are included as an info-graphic on this listing as well as with your kit.
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9.7

Exceptional

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3

Corro-Protec
Corro-Protec Powered Anode Rod for Water Heater, 20-Year Warranty, Eliminates Rotten Egg/Sulfur Smell within 24 hours, Stops Corrosion and Reduces Limescale, Electrical Anode Rod Made of Titanium

9.5 worth the money

9.5 Easy installation

9.5 Aroma
Main highlights

STANDARD DEDICATED ANODE PORT INSTALLATION [standard for all water heater brands except Bradford White] - This 40-89-gallon model is designed for installation in a dedicated anode port located on top of your water heater. If you need to install your anode in the hot water outlet instead (no anode port or old anode stuck), select our anode for Bradford White tank and hot water outlet installation.
SAY GOODBYE TO ODORS - Eliminate your water heater odor problem by removing the rotten egg smell in hot water with our advanced powered anode rod.
SAFE WITH ALL WATER SOURCES, TREATMENT SYSTEMS & WATER HEATER TYPES - Corro-Protec anodes are safe with any water sources [city and well water], water treatment systems [water softeners, filtration, reverse osmosis, etc.], and water heater tanks [electric, gas, solar, hybrid and geothermal].
PERMANENT CORROSION PROTECTION - Designed to replace your 40-89-gallon water heater’s hex head anode rod, it can defend against any level of water hardness, including the increased corrosiveness of softened water.
MAXIMUM DURABILITY WITH TITANIUM - Forget about the constant replacement of aluminum anode rods or magnesium ones—our titanium-made powered anode rod is maintenance-free and is made of materials that do not disintegrate.
MAXIMIZE ENERGY SAVINGS - Our energy-efficient design combats sediment build-up, enhancing water quality and prolonging tank life while saving you money on energy bills.
INSTALLATION SIMPLIFIED - We’ve included comprehensive, easy-to-follow step-by-step instructions, ensuring a smooth installation process of the water heater anode rod and its accompanying long 12-foot cord power supply. 1" 1/16 and 1" 3/16 sockets will be required for removal and installation.
HASSLE-FREE HOT WATER - Corro-Protec’s powered anode rods are revolutionizing the water heater maintenance by preventing and solving numerous water heater problems.
CERTIFIED LEAD-FREE - Our titanium mixed-metal oxide rod is not just lead-free but also boasts the prestigious Gold Seal by the Water Quality Association for your safety and trust.
20-YEAR WARRANTY & QUALITY – Manufactured in Canada since 2006, our hot water heater anode rod is backed by a 20-year warranty, fully compatible with your water heater warranty under U.S. MMWA law, and significantly extends the life of your tank.
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9.4

Excellent

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4

DROMIX
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

9.3 Easy installation

8.7 worth the money

8.0 Simple to clean
Main highlights

【Versatile Fits】The Tune-up Kits in Plumber's pack Fits Most Water Heaters with Dual Elements - Rheem, A.O Smith, Whirlpool, GE, Richmond, Ruud, BRADFORD WHITE; CRAFTMASTER; GENERAL ELECTRIC; GS WOOD; KENMORE; LOCHINVAR; RELIANCE; RICHMOND; STATE; MOR-FLO; APCOM etc
【ONE YEAR WARRANTY】Z Turn-up Kit Includes (2) 4500W 240V COPPER Water Heater Element, Insert Length: 13-9/16". 3500W@208V. Fit Most Brands of Water Heater >= 30 Gallons.
【ONE YEAR WARRANTY】Includes (1) Upper Water Heater Thermostat, (1) Lower Water Heater Thermostat, 120V ~ 480V
【More Durable】Extra Longer Life of Heating Element with Chromed Coating on the Heating Area
【Interchangeable】Therm-O-Disc Type Thermostat, Can interchange with APCOM type.
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9.3

Excellent

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5

Lamudo
9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005(12-month warranty)

8.9 Easy installation

8.7 Temperature control

8.4 materials Quality

Why we love it

High compatibility with various water heater brands.

Includes all necessary components for easy installation.

12-month warranty ensures long-term reliability.
Main highlights

Upgraded Replacement Pilot Assembly
This 9003542 pilot assembly is designed for natural gas water heaters, made of premium material, offers stable and durable performance, and includes a 12-month warranty.

Ideal for Natural Gas Water Heaters
Perfect for replacing the pilot assembly in Reliance, A.O.Smith, Kenmore, State GS and GSX natural gas water heaters, ensuring compatibility and ease of installation.

Exact Replacement and Easy Installation
Customers appreciate the exact fit and straightforward installation process, with many noting it resolved their water heater issues quickly and efficiently.
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9.0

Excellent

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6

RESIDEO
Resideo CQ100A1013/U 24-Inch Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters

33% Off

Why we love it

Durable and long-lasting build.

Universal fit for easy installation.

Positive positioning ensures quick setup.
Main highlights

Durable Construction
Heavy, long-lasting element ensures extended use and reliability.

Versatile Compatibility
Ideal for gas furnaces, boilers, and water heaters.

Easy Installation
Universal adapter fits various pilot burner types seamlessly.
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8.9

Very Good

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7

Rheem
Rheem SP20060 Electric Water Heater Tune-Up Kit, 2

27% Off

9.9 Simple to clean

9.7 Easy installation

9.7 Simple to take off

Why we love it

Complete kit for water heater repair.

Easy to install with basic DIY skills.

Cost-effective compared to replacing the water heater.
Main highlights

Complete Tune-Up Kit
The Repair Kit, PlumberS Pack by Rheem is a comprehensive solution for revitalizing water heaters, including both thermostats and heating elements.

Ideal for DIY Repairs
Perfect for homeowners looking to fix water heater issues themselves without needing extensive tools or expertise, making it a cost-effective alternative to replacements.

Easy Installation
Customers frequently praise the easy-to-follow instructions and straightforward installation process, allowing for quick and efficient repairs.
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8.6

Very Good

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8

Pulaim
Upgrade 100112330 Water Heater Pilot Assembly, Replace 9007876 Thermopile for Water Heater, Compatible with 300 301 Series Whirlpool Water Heater Parts & A.O.Smith, American, State, Kenmore, Reliance

9.7 Comfort

9.3 worth the money

9.3 Easy installation

Why we love it

Easy Installation: 15 30 minutes

Perfect Quality: raw materials rigorous testing

After Sales: 100 money back guarantee
Main highlights

Key Features
Ensures perfect compatibility with major brands, solves non-lighting indicator issues, high-quality materials for extended life.

Ideal Use Cases
Ideal for replacing damaged thermocouples in Reliance, Whirlpool, A.O.Smith, Kenmore, State, American water heaters, excluding propane models.

Customer Praise
Most reviews highlight its easy installation, perfect fit for listed models, and the reliability of the lifetime warranty.
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8.5

Good

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9

Reliance
Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters

8.2 Easy installation

8.0 worth the money

Why we love it

Durable value

Professional installation

Quality manufacturing
Main highlights

Key Features
Enhances safety and efficiency in gas appliances, manufactured in China, ensuring reliable performance and adding significant value to your setup.

Ideal Use Cases
Perfect for professional installation in residential or commercial gas systems, optimizing functionality and ensuring compliance with safety standards.

Customer Reviews
Most praised for its durability and reliability, customers appreciate the peace of mind and quality assurance it offers.
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8.4

Good

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10

HYDRO MASTER
HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass

9.1 Easy installation

8.9 Simple to use

8.4 worth the money

Why we love it

Lead Free: Safe drinking water

Colored handles: Easy hot/cold identification

CSA Certified: Quality assured
Main highlights

Key Features and Benefits
Lead-free brass, 3/4-Inch IPS, easy identification colored handles, includes pressure relief valve, CSA certified, easy installation.

Ideal Use Cases
Perfect for tankless water heater installations requiring safe, lead-free components and effective system isolation for maintenance.

Customer Reviews Summary
Highly praised for its straightforward installation process and the reliable, easy-to-use color-coded valve handles.
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8.3

Good

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Water Heater Parts of 2025

1

Ranein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater

Why we love it

How do we rank?

2

Chromex Tankless Water Heater Flush Kit with Gallon Liquid Descaling Solution and 1/6HP Extra Strength Pump

3

Corro-Protec Powered Anode Rod for Water Heater, 20-Year Warranty, Eliminates Rotten Egg/Sulfur Smell within 24 hours, Stops Corrosion and Reduces Limescale, Electrical Anode Rod Made of Titanium

4

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

5

9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005(12-month warranty)

Why we love it

6

Resideo CQ100A1013/U 24-Inch Replacement Thermocouple for Gas Furnaces, Boilers and Water Heaters

Why we love it

7

Rheem SP20060 Electric Water Heater Tune-Up Kit, 2

Why we love it

8

Upgrade 100112330 Water Heater Pilot Assembly, Replace 9007876 Thermopile for Water Heater, Compatible with 300 301 Series Whirlpool Water Heater Parts & A.O.Smith, American, State, Kenmore, Reliance

Why we love it

9

Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters

Why we love it

10

HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass

Why we love it

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