10 Best water heater parts of 2025

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Best Choice

1

Honeywell

Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1" Cavity made by Resideo
9.7

Exceptional

Our Rating
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Value for Money

2

Reliance
Reliance Water Heater Natural Gas Control Valve 100112336 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters
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.
Key specs
- size:Pack of 1
- style:Indoor Installation
- wattage:2000 watts
- material:N/A
- color:N/A
9.6

Exceptional

Our Rating

8.2
Easy installation

8.0
worth the money
3

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)
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.
9.3

Excellent

Our Rating

8.9
Easy installation

8.7
Temperature control

8.4
materials Quality
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
9.2

Excellent

Our Rating

9.3
Easy installation

8.7
worth the money

8.0
Simple to clean
5

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
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.
Key specs
- size:5.9 x 4.7 x 0.5 inches
- style:Water heater pilot assembly
- wattage:N/A
- material:High quality materials
- color:N/A
9.1

Excellent

Our Rating

9.7
Comfort

9.3
worth the money

9.3
Easy installation
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6

MENSI

MENSI Pilot Burner Assembly Replacement Replace for Kit SP20824,SP20754,SP21058,SP21059,SP20800 Compatible for Rheem, Ruud and Richmond Water Heaters, NG with LP Orifice
8.8

Very Good

Our Rating
7

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

33% Off
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.
8.7

Very Good

Our Rating
8

Sediment Buster

Sediment Buster - Water Heater Tool UL Verified V699054 – Flushes, Cleans, Drains, Breaks Up Sediment Clogs from Electric or Gas Water Heaters – Easy to Use
8.6

Very Good

Our Rating

9.9
lasts a long time

9.3
Easy installation

9.3
Simple to use
9

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

27% Off
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.
8.3

Good

Our Rating

9.9
Simple to clean

9.7
Easy installation

9.7
Simple to take off
10

HYDRO MASTER
HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass
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.
8.2

Good

Our Rating

9.1
Easy installation

8.9
Simple to use

8.4
worth the money

10 Best water heater parts of 2025

1

Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1" Cavity made by Resideo

How do we rank?

How do we rank?

Analyzing top stores

2

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

8.2

8.0

3

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

8.7

8.4

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

9.3

8.7

8.0

5

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

9.3

9.3

6

MENSI Pilot Burner Assembly Replacement Replace for Kit SP20824,SP20754,SP21058,SP21059,SP20800 Compatible for Rheem, Ruud and Richmond Water Heaters, NG with LP Orifice

7

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

8

Sediment Buster - Water Heater Tool UL Verified V699054 – Flushes, Cleans, Drains, Breaks Up Sediment Clogs from Electric or Gas Water Heaters – Easy to Use

9.9

9.3

9.3

9

Rheem SP20060 Electric Water Heater Tune-Up Kit, 2

9.9

9.7

9.7

10

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

9.1

8.9

8.4

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