Find the right part faster
Multiple models matched. Select your model to confirm fit.

Upper thermostat

Lower thermostat - AO Smith Electric Water Heater

Thermostat 90/150 with limit.

Thermostat

Lower Thermostat

Water heater control valve

Thermostat

Hotwtrhtrvlvlp 10"(182792-000)
When dealing with water heater repair or maintenance, having the correct parts is crucial. Repair Clinic offers genuine OEM AO Smith Water Heater Thermostat Parts, ensuring your thermostat operates efficiently within the warranty guidelines. Recognized for precise functionality, these parts are indispensable for regulating your water heating system to avoid water temperature problems. Repairing an AO Smith water heater thermostat with our genuine OEM parts aids in restoring the optimal temperature control, addressing issues such as unexpectedly hot or cold water. Avoiding potential breakdowns initiated by thermostat failures maintains your unit's efficiency. For more AO Smith parts, browse our Float Valve Parts. Browse our extensive inventory of replacement parts online to ensure a reliable restoration of your water heater's peak performance.
Find the right AO Smith Water Heater Thermostat Parts with tips and solutions for common water heater issues. If your water heater isn't providing the desired hot water, a faulty thermostat might be the culprit. Thermostats play a critical role in maintaining water temperature, ensuring that your heater operates efficiently. Find how to best maintain and replace these key parts.
Signs of a faulty thermostat include inconsistent water temperatures or no heat. If you've ruled out power issues, testing the thermostat using a multimeter can confirm if it's defective. Replacement may be necessary for effective water heating.
Costs vary based on model and retailer. Thermostat replacement might range from $20 to $50, excluding labor if hiring a professional. Shop for competitive pricing on replacement parts for AO Smith water heaters to save money.
Repair Clinic is a reliable source for genuine OEM replacement parts. With a large inventory and same-day shipping, you'll get the parts you need swiftly. Browse more about AO Smith parts and solutions to repair your heater efficiently.


Ensure your AO Smith water heater functions optimally by replacing its thermostat with genuine parts. Whether you're a homeowner or a professional technician, you can easily order AO Smith water heater thermostat parts online to repair your unit efficiently. Shopping online offers the benefit of same-day shipping, helping you'receive your parts quickly. It's easy to find the right thermostat with a simple model number or part number lookup. Plus, enjoy a Price Match Guarantee and No-Hassle 365-Day Returns for any uninstalled part. Ensuring the correct thermostat installation resolves common issues like inconsistent water temperatures, keeping your water heater in top condition. For additional repair resources and solutions, visit our Water Heater Repair Help page. For other essential AO Smith parts, browse the AO Smith Water Heater Baffle Parts collection.
AO Smith prints the model number on a label or rating plate attached to the side of most water heater tanks. Check the upper or lower portion of the tank, and look for the model number near the serial number and other electrical or gas specifications. Copy the complete model number, including letters, numbers, and any hyphens. Enter it in the model number search to pull up the parts matched to your unit. Because the model number identifies the entire water heater, it narrows the catalog across all associated part categories, not just thermostat parts. That means fewer wrong orders and a faster repair.

From symptom-based troubleshooting articles to step-by-step video walkthroughs, Repair Clinic's online repair library has the guidance AO Smith Water Heater owners and technicians need. Part testing videos help verify a component before you swap it, wiring diagrams give the electrical reference, and written repair guides cover each step of the installation. Use the model number lookup to find the exact OEM part.

"Find out the top five reasons your gas water heater is not heating and how to troubleshoot issues like a faulty pilot light, gas valve, thermocouple, pressure switch, or thermostat.

Find out five common reasons your electric water heater is not heating and how to address each issue.

Learn why testing your electric water heater thermostat is essential, how to safely check it with a multimeter, and how to interpret results to diagnose and resolve heating problems.