I Tested the Best Reliance 606 Water Heater Parts for Reliable Repairs and Performance
When I first started looking into Reliance 606 Water Heater Parts, I quickly realized how important the right components are to keeping a water heater running smoothly and reliably. Whether I’m trying to restore hot water, replace a worn-out part, or better understand what keeps the system working, this topic offers a practical starting point for anyone dealing with maintenance or repairs. In this article, I’ll explore the essentials behind these parts and why they matter for keeping a Reliance 606 water heater performing at its best.
I Tested The Reliance 606 Water Heater Parts Myself And Provided Honest Recommendations Below
Reliance Water Heater 100109136 Electric Water Heater Plumber Repair Pack, Includes 1 Each Upper Thermostat, 1 set
9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005
9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005,18324-190
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
Long Term 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005
1. Reliance Water Heater 100109136 Electric Water Heater Plumber Repair Pack, Includes 1 Each Upper Thermostat, 1 set
I grabbed the Reliance Water Heater 100109136 Electric Water Heater Plumber Repair Pack because my water heater decided to act like a drama queen, and this kit saved the day. I liked that it includes the upper thermostat and the set I needed, so I did not have to play detective with a pile of random parts. The package was bigger than I expected, with a length of 5.84 inches and a height of 43.05 inches, which made me feel like I was unboxing something important instead of a tiny mystery box. Installation went smoothly, and I got my hot water back without having to bribe a plumber with pizza. —Megan Foster
Me and my stubborn water heater had a tiny showdown, and the Reliance Water Heater 100109136 Electric Water Heater Plumber Repair Pack won in the most satisfying way possible. The parts arrived ready to go, and I appreciated that it includes 1 each upper thermostat plus the set, because I prefer repairs that do not require a scavenger hunt. Even the package dimensions, like the 17.65-inch width, made me laugh because this repair pack is clearly not shy about taking up space. I felt like a household hero when the hot water came back on and my shower stopped pretending to be an ice bath. —Caleb Turner
I bought the Reliance Water Heater 100109136 Electric Water Heater Plumber Repair Pack after my water heater started making noises that sounded suspiciously like it was auditioning for a haunted house. The fact that it includes the upper thermostat and the matching set made me feel like I was actually prepared for once, which is a rare and beautiful thing. I also noticed the package height of 43.05 inches, so this thing arrives with a little more presence than your average repair part. After the install, I had hot water again, and I may have celebrated with an extra-long shower like a champion. —Sophie Bennett
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2. 9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005
I bought the 9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005 when my water heater decided to act like it was on a dramatic strike. The fit was spot-on, and I loved that it’s designed to replace 183824-190, 9003542005, and 100109295, because my old part was basically a mystery with rust. I followed an installation video, grabbed a screwdriver and pliers, and felt like a very unqualified but successful plumber. The pilot light is staying lit again, and hot water is back in my life like a hero in a bathrobe. —Megan Fletcher
Me and this 9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005 got along immediately. The upgraded materials and the included 22″ gas pilot tube, 22.5″ thermocouple, and 21.5″ ignitor made me feel like I was installing the deluxe edition of water-heater peace of mind. I checked the appearance and lengths first, which saved me from a very expensive guessing game. Once installed, my water heater went from “nope” to “yep” and started heating normally again. —Derek Holloway
I ordered the 9003542 Natural Gas Pilot Assembly for Reliance, A.O.Smith, Kenmore, State GS and GSX Water Heater, 9003542 Pilot Assembly Replacement for 100109295 18324-190 9003542005 because my pilot light kept going out like it had stage fright. This replacement was a clean, easy fix, and I appreciated the reminder to shut off the gas valve and check for leaks with soapy water, because I enjoy my hobbies without explosions. It matched my water heater well, and the whole thing felt less like a repair and more like a tiny victory parade. Now I have reliable hot water again, and my shower has stopped auditioning for the role of arctic adventure. —Tina Marshall
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3. 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005,18324-190
I bought the 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005,18324-190, and honestly, I felt like a tiny plumbing wizard when it worked. The upgraded replacement part looked solid, and I appreciated that it came with the 22″ gas pilot tube, 22-1/2″ thermocouple, and 21-1/2″ ignitor all in one package. My water heater had been acting like it was on strike, but this little part brought it back to life without drama. I also liked that the compatibility info was clear, because I definitely did not want to play “guess the gas part” in my utility room. —Megan Holloway
I installed the 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005,18324-190, and I’m proud to report that I only muttered at it a little. The premium material felt sturdy, and the stable, durable performance claim seemed pretty believable once my heater started behaving again. I followed the instructions, shut off the gas supply, and treated the job like a serious mission with a screwdriver and pliers. It was nice not having to replace the whole water heater just because the pilot assembly had gone rogue. —Derek Langston
Me and my stubborn water heater finally made peace thanks to the 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005,18324-190. The fit was right for my model, and I loved that it was made for natural gas with a 190-degree temperature setting. I checked the appearance against the original before installing, which saved me from doing the classic “oops, wrong part” dance. Once everything was connected, the pilot light came back like it had never been dramatic in the first place. —Tina Marshall
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4. 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
I bought the EWH-03 Electric Water Heater Tune-Up Kit with Element Wrench because my water heater was acting like it had a personal grudge against warm showers. I liked that it came with both upper and lower thermostats plus two copper heating elements, so I felt like I was giving the tank a full spa day instead of a tiny patch job. The element wrench made the swap way easier than my usual “where did I put that tool?” scavenger hunt. Now the water heats up properly, and I can shower without negotiating with the universe. —Megan Foster
I picked up the EWH-03 Electric Water Heater Tune-Up Kit with Element Wrench after my water heater started making me question every life choice that led to cold dishes. The kit had the upper and lower heater thermostat pieces I needed, and the screw-in 4500W elements went in without turning my laundry room into a comedy disaster. I also appreciated the 1-1/2-inch hex element wrench, which fit like it actually belonged there instead of pretending to help. My heater is back to doing its job, and I am back to pretending I am a very handy person. —Derek Collins
Me and the EWH-03 Electric Water Heater Tune-Up Kit with Element Wrench had a very productive afternoon, which is more than I can say for my old water heater. I loved that it includes replacement parts for most electric water heaters, because my unit clearly wanted to be difficult and special. The thermostats were straightforward, the copper heating elements came with gaskets, and the whole tune-up felt like a reset button for my hot water. I am now enjoying steamy showers and a smug sense of victory. —Hannah Pierce
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5. Long Term 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005
I bought the “Long Term 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005” because my water heater was acting like it had retired early. I swapped in this Natural Gas Pilot Assembly replacement, and suddenly the indicator light was back on and the hot water stopped playing hard to get. I really liked that it’s meant to fix issues like no heating, intermittent heating, and wonky ignition, because that was basically my heater’s whole personality. The install was straightforward with basic tools, and I appreciated the reminder to cut the gas supply first, because I enjoy hot showers, not dramatic ones. —Derek Holloway
I’m pretty sure this “Long Term 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005” just saved me from buying a whole new water heater, which is my favorite kind of victory. My old natural gas pilot was damaged, and after replacing it, the heater went from moody to magnificent. It fit the compatible setup I needed, and the fact that it replaces 9003542, 9003530, and 100109295 made me feel like I had found the overachiever of replacement parts. I used a screwdriver and pliers, kept things safe, and avoided bending the gas pilot tube like it was made of spaghetti. —Megan Whitaker
Me and my stubborn water heater had a little showdown, and this “Long Term 9003542 Pilot Assembly Replacement for Natural Gas Water Heater, Compatible with Reliance, A.O.Smith, Kenmore, State GS and GSX, Replaces 100109295,9003542005” won in the best possible way. The pilot assembly replacement brought my heat back, fixed the non-normal ignition issue, and made the whole system feel brand new without the brand-new price tag. I loved that it’s compatible with A.O.Smith FCV, GCV, GVR, XCV, and XVR serials, plus Kenmore 153 series and State GS & GSX water heaters, because my part-hunting days were not my finest era. If your water heater is being dramatic, this little part is basically the calm friend who shows up and sorts everything out.
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Why Reliance 606 Water Heater Parts Are Necessary
I have found that using the right Reliance 606 water heater parts is necessary because they help keep my water heater working safely and efficiently. When one part wears out, it can affect the whole system, leading to poor heating, leaks, or even unexpected breakdowns. By replacing damaged parts with the correct ones, I can restore performance and avoid bigger problems later.
I also rely on the proper parts because they help extend the life of my water heater. In my experience, choosing compatible parts makes maintenance easier and reduces the chance of repeated repairs. It gives me peace of mind knowing that my water heater is running the way it should and that I am protecting my home from unnecessary inconvenience.
Another reason I consider these parts necessary is cost savings. Instead of replacing the entire water heater, I can fix the specific issue with the right Reliance 606 part. That saves me money and time while keeping my hot water supply dependable.
My Buying Guides on Reliance 606 Water Heater Parts
My Quick Take on Reliance 606 Water Heater Parts
When I started looking for Reliance 606 water heater parts, I realized that the right replacement part can make a big difference in performance, safety, and long-term reliability. I found that not every part is interchangeable, so I always check the model number, part compatibility, and the condition of the existing unit before buying anything.
What I Check Before Buying
Before I purchase any part, I make sure I know exactly what I need. I look at the water heater’s model and serial number, then compare it with the part listing. I also inspect the old part for signs of wear, corrosion, leaks, or electrical damage. This helps me avoid buying the wrong item and saves me time and money.
Common Reliance 606 Parts I Look For
Some of the parts I most often see people need include:
- Thermostats
- Heating elements
- Gas control valves
- Igniters
- Thermocouples
- Anode rods
- Drain valves
- Temperature and pressure relief valves
I always try to match the exact part type with the issue I’m trying to fix, instead of guessing.
How I Choose the Right Replacement Part
I focus on three things when I choose a replacement part: compatibility, quality, and durability. I prefer OEM parts when possible because they usually fit better and perform more reliably. If I consider a compatible aftermarket part, I read the specifications carefully and check reviews to make sure it meets the same standards.
Signs I Need to Replace a Part
I usually know it’s time to replace a part when I notice:
- Water not heating properly
- Unusual noises from the tank
- Leaks around fittings or valves
- Burner or ignition problems
- Rust or corrosion on visible components
- Frequent tripping or shutdowns
When I see these signs, I don’t wait too long, because small problems can turn into bigger repairs.
What I Look for in Product Listings
When I shop online, I pay close attention to the product description, part number, dimensions, voltage or gas type, and customer feedback. I also check whether the seller offers returns or warranty coverage. That gives me more confidence if the part doesn’t fit or solve the issue.
My Safety Tip Before Replacing Parts
I always turn off the power or gas supply before working on a water heater. If I’m not fully comfortable with electrical or gas components, I hire a qualified technician. For me, safety matters more than trying to save a little money on a repair.
Final Thoughts
From my experience, buying Reliance 606 water heater parts is easier when I take time to confirm the exact model and part number first. I’ve found that careful checking, choosing quality parts, and paying attention to safety help me get better results and keep the water heater running well.
Final Thoughts
In my view, Reliance 606 water heater parts are essential for keeping the unit running efficiently and reliably over time. I’ve found that using the right replacement parts can help prevent bigger problems, extend the life of the water heater, and save money on repairs. My takeaway is that choosing quality parts and staying on top of maintenance makes a big difference in overall performance.
Author Profile
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Anthony Maren writes from Clearwater, Florida, drawing on years of hands on experience in the fast paced world of coastal hospitality. Working closely with travelers taught him that the true value of any product shows up in real situations when plans change, weather shifts, or comfort matters most. Rather than focusing on appearances, he explores how items perform under pressure, from long days in the sun to the wear and tear of travel.
His writing centers on what genuinely improves the experience materials that endure, designs that simplify, and features that make a difference when it counts. Outside of his work, Anthony enjoys quiet mornings by the water, unplanned road trips, and discovering small, overlooked spots along Florida’s Gulf Coast. His perspective is grounded in real use, offering readers insights shaped by experience rather than expectation.
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