July 3, 2025

Advertising Disclosure

Water Heater Parts of 2025

Explore top picks

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
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.
Key specs
- Brand:Ranein
- Color:Gray
- Battery Life:N/A
- Screen Size:N/A
- RAM Size:N/A
9.8

Exceptional

Our Rating

9.5
worth the money

9.1
Easy installation

8.7
Long life
How do we rank?

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

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Chromex

Chromex Tankless Water Heater Flush Kit with Gallon Liquid Descaling Solution and 1/6HP Extra Strength Pump
9.7

Exceptional

Our Rating

9.9
Easy installation

9.7
Simple to use

9.5
Instruction
3

Honeywell

Reliance water heater gas control valve 100112336 trade number WT8840B 160 Degree F 1" Cavity made by Resideo
9.5

Excellent

Our Rating
4

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.
9.2

Excellent

Our Rating

8.9
Easy installation

8.7
Temperature control

8.4
materials Quality
5

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
9.1

Excellent

Our Rating

8.2
Easy installation

8.0
worth the money
See Today’s Deals & Prices
6

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
9.0

Excellent

Our Rating

9.3
Easy installation

8.7
worth the money

8.0
Simple to clean
7

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.
8.9

Very Good

Our Rating

9.1
Easy installation

8.9
Simple to use

8.4
worth the money
8

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
8.6

Very Good

Our Rating

9.5
worth the money

9.5
Easy installation

9.5
Aroma
9

Rheem
Rheem AM39922-1 Water Heater Burner Assembly Kit - RG40S-40 Natural Gas
Main highlights

Key Features
Efficient heating with robust design, this RG40S-40 Natural Gas Burner Assembly Kit ensures consistent performance and durability for long-term use.

Ideal Use Cases
Perfect for residential water heaters requiring natural gas, excels in environments needing reliable hot water supply without frequent maintenance.

Customer Reviews Summary
Most praised for its easy installation process and significant improvement in water heater efficiency, leading to positive feedback from numerous users.
8.5

Good

Our Rating

9.9
Easy installation

8.0
worth the money
10

Iococee

3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit with Pressure Relief Valve, Clean Brass, 3/4 Inch Service Installation Valve for rheem,rinai,ecosmart,navien,noritz,takagi,bosch
8.4

Good

Our Rating

9.5
Easy installation

9.5
Simple to use

9.1
worth the money

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

9.5

9.1

8.7

How do we rank?

How do we rank?

Analyzing top stores

2

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

9.9

9.7

9.5

3

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

4

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

5

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

6

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

7

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

8

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

9.5

9.5

9

Rheem AM39922-1 Water Heater Burner Assembly Kit - RG40S-40 Natural Gas

9.9

8.0

10

3/4 Inch IPS Isolator Tankless Water Heater Service Valve Kit with Pressure Relief Valve, Clean Brass, 3/4 Inch Service Installation Valve for rheem,rinai,ecosmart,navien,noritz,takagi,bosch

9.5

9.5

9.1

Similar products on Amazon

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

$35.99

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

$8.67

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

$49.99

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

$39.99

RV Water Heater Anode Rod - 2-Pack, 2 Years Warranty - 9.25" x 3/4" NPT - Premium Magnesium Anode Rod for hot water heater Rv, Long-Lasting Protection Suburban Anode Rod for Rv Water Heater

$15.97

Rheem SP20060 Electric Water Heater Tune-Up Kit, 2

$35.99

EWH-03 Electric Water Heater Tune-Up Kit by puxyblue - Fit for A O Simith Ken-more Whhirl-pool with Upper & Lower Heater Thermostat, Heater Elements, Element Wrench, Water Heater Parts

$37.87

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

$42.99

Camco Automatic Temperature and Pressure Relief Valve with Extension Probe and Lever | Features an All Brass Body with a Stainless Steel Pressure Spring | (10473)

$20.49

Denkuhin 9003542 Natural Gas Pilot Assembly for Water Heater Replace for Reliance A.O.Smith Kenmore State GS and GSX Water Heater Replacement Part 100109295 9003542005 18324190 9003530

$27.90

Sign up and get exclusive special deals