Water Heater Parts

Water Heater Parts & Repair Guide

When your water heater fails, the fix is often simpler — and far cheaper — than you'd expect. A thermocouple, heating element, or dip tube replacement can restore hot water in an afternoon. Repair Clinic stocks OEM parts for all major brands:, and more. Whether you have a gas, electric, or tankless model, we'll help you find the exact replacement parts you need.

Most water heater issues fall into one of three categories: pilot light problems (thermocouples and thermopiles), no hot water (heating elements and thermostats), and water quality issues (anode rods and dip tubes). Identify your symptoms below, confirm your model number, and order the OEM part that can help resolve it.

• Pilot won't stay lit: Thermocouple or thermopile failure; $10 to $20 fix; most common gas water heater repair
• No hot water or insufficient hot water: Heating element (upper or lower) or thermostat failure; electric models; $30 to $80 per element
• Cold water at hot tap: Broken dip tube mixing cold water into hot; simple $5 to $15 replacement
• Pressure relief valve leaking: Safety valve; replace if over 6 years old or actively dripping
• Rust-colored water or corrosion: Anode rod depleted; maintenance part; aluminum or magnesium

Use our model number lookup to confirm your exact water heater model, then browse OEM thermocouples, heating elements, thermostats, dip tubes, and gas valve assemblies. Same-day shipping available.

Water Heater Parts: Frequently Asked Questions

Why won't my gas water heater pilot light stay lit?

The thermocouple is a small metal rod that sits in the pilot flame and generates a tiny electrical signal that tells the gas valve the pilot is burning. When the thermocouple fails, the signal stops and the gas valve closes as a safety measure. A new OEM thermocouple costs $10 to $20 and fixes the problem 80% of the time. Before replacing it, make sure the pilot ignites at all and burns a steady blue flame. If the pilot won't light, the gas valve or igniter assembly may be the issue.

How do I know if my electric water heater heating element needs replacement?

An electric water heater with no hot water or very little hot water almost always has a failed heating element. If you hear the tank filling but feel no warmth coming from the tap, one or both elements have burned out. Most electric water heaters have an upper and lower heating element — either can fail independently. You can test for continuity with a multimeter, but OEM replacement is straightforward: turn off power, drain the tank partially, unscrew the old element, and screw in the new one. Match the wattage rating exactly (typically 4500W, 5500W, or 8000W).

What's a dip tube, and why does it matter?

The dip tube is a plastic pipe inside your water heater that feeds incoming cold water all the way to the bottom of the tank for even heating. When the dip tube cracks or breaks off (very common on older tanks), cold water mixes directly with hot water at the top of the tank. You'll notice hot water that runs out unusually fast, or water that never gets hot enough. A replacement dip tube is only $5 to $15 and takes minutes to install. Confirm your model number to get the right length and connection type.

How often should I replace my anode rod?

The anode rod is a sacrificial metal rod (usually aluminum or magnesium) that corrodes instead of the tank itself. It's the reason water heater tanks last 10 to 15 years instead of 5. Most manufacturers recommend inspecting it every 1 to 3 years and replacing it when it's more than 50% corroded. If you live in an area with soft water or a water softener, the anode may corrode faster and need replacement every 2 to 3 years. A new anode rod costs $20 to $40 and can add years to your tank's life.

Find and Order Water Heater Parts Online Today

Whether you're a homeowner tackling DIY repairs or a professional technician, finding the right water heater parts online. Use your model number to get the right part. From thermostats to heating elements, you can find a wide range of parts to ensure your hot water heater runs smoothly. Take advantage of our model and part number lookup for a reliable shopping experience, and enjoy the convenience of same-day shipping on all orders. Our commitment to quality includes a No-Hassle 365-Day Returns policy and a Price Match Guarantee, making this the best place to fulfill your water heater repair parts needs. If you're dealing with issues like leaks or insufficient heating, identify potential problems and order your replacement water heater parts promptly.

Model Number Basics for Water Heater Owners

Before ordering, check the rating plate on your water heater, usually on the side of the tank near the top. Depending on the unit, the model number may also appear behind an access panel or beneath a protective cover. Copy the complete number, including letters and any dashes, because similar water heaters can use different parts. Type it into our model number lookup and the catalog narrows to parts made for your unit. This filters the full water heater parts selection, not just one category, so you can compare compatible heating elements, thermostats, valves, and other replacement parts with less guesswork. You get parts that fit the first time.