Ruud SP20303A Gas Water Heater...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$139.25
Ruud SP20303A Gas Water Heater Thermostat/Gas Valve Assembly

Ruud SP20303A Gas Water Heater Thermostat/Gas Valve Assembly

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Model: SP20303A

In Stock (leaves warehouse same day if ordered before 3pm ET)

$139.25
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Ruud SP20303A Gas Water Heater Thermostat/Gas Valve Assembly

The Ruud SP20303A is an OEM replacement thermostat/gas valve assembly engineered for gas-fired water heater applications. This combination control governs gas flow to the burner while regulating water temperature at the tank, making it a direct-fit service part for plumbing and mechanical contractors performing water heater repair and maintenance. As a factory-branded component, the SP20303A is intended for technicians who need a reliable, matched control valve when servicing residential or light commercial gas water heater installations. Because it combines thermostatic temperature control and gas shutoff in a single assembly, it replaces two functions with one part, reducing the number of components a technician needs to source and install during a service call. The SP20303A is stocked for contractors who prioritize manufacturer-matched parts over generic aftermarket substitutes when restoring a gas water heater to proper working order.

Key Features

  • OEM Replacement Part: Manufactured by Ruud as a direct-fit thermostat/gas valve for compatible gas water heater models, simplifying service calls and reducing installation guesswork.
  • Combined Thermostat and Gas Control: Integrates temperature regulation and gas shutoff functions into a single valve assembly, streamlining the water heater control system and minimizing the number of separate parts required for a repair.
  • Service and Repair Ready: Designed for straightforward removal and replacement during routine water heater maintenance or troubleshooting of temperature or ignition issues, helping technicians complete service calls efficiently.
  • Brand-Matched Reliability: Sourced directly under the Ruud brand for contractors who prioritize manufacturer-matched components over generic aftermarket substitutes, supporting proper fit and function on compatible equipment.
  • Gas Flow and Temperature Control: Regulates both gas supply to the burner and tank water temperature from a single control point, consolidating two critical functions of gas water heater operation.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Gas Water Heater Repair and Replacement
  • Residential Plumbing Service Calls
  • Water Heater Temperature Control Troubleshooting
  • Mechanical Contractor Maintenance Stock
  • Light Commercial Gas Water Heater Servicing

Why Ruud?

Ruud is a recognized manufacturer of water heating equipment, and OEM control components like the SP20303A are built to match the fit and function of the original equipment they replace. Choosing a factory-matched thermostat/gas valve helps contractors restore proper water heater operation with a part designed specifically for Ruud equipment, avoiding the fit and performance uncertainty that can come with generic substitutes. For service technicians managing multiple water heater repair calls, stocking the correct OEM control valve reduces callbacks and helps ensure the replacement part performs as the original equipment was designed to.

Manufacturer Resources

Product Specs

list_batch:
RUU-20260924
Product Type:
Gas Valve Assembly
Department:
Plumbing
Product Subgroup:
Fittings and Valves

Ruud SP20303A – Frequently Asked Questions

1) What does the Ruud SP20303A gas water heater part actually do?
The SP20303A is a combination thermostat and gas valve assembly for gas-fired water heaters. One assembly handles two jobs: it regulates tank water temperature and controls gas flow to the burner, including gas shutoff. So when you replace it, you are replacing the temperature control and the gas control in a single part rather than sourcing them separately.
2) My gas water heater won't hold temperature or the burner won't light - is the thermostat/gas valve the part to replace?
Those are the two symptom groups this assembly covers. Because the SP20303A controls both the tank temperature setting and the gas supply to the burner, it is the part technicians go to when troubleshooting temperature control problems or ignition issues on a gas water heater. Confirm the valve is the fault and not the thermocouple or igniter before swapping it, since this is a single-point control for both functions.
3) Will this gas valve work on a propane water heater or an electric unit?
Neither can be assumed here. The SP20303A is a gas water heater control, so it has no application on an electric heater at all. For fuel type, gas valves are built specifically for natural gas or LP and are not interchangeable between them, so match the valve to the fuel type called out on your heater's rating plate and the Ruud model it was built for.
4) Is the SP20303A an OEM Ruud part or an aftermarket replacement?
It is a factory Ruud part, sold under manufacturer part number SP20303A. That matters on a control valve because an OEM combination control is built to match the fit and function of the valve that came on the heater, instead of an aftermarket unit you have to adapt.
5) Can the SP20303A be used on light commercial water heaters or is it residential only?
Ruud lists it for both residential and light commercial gas water heater service. It is a repair part for gas-fired tank heaters, so the deciding factor is whether your heater model calls for the SP20303A control, not whether the building is a house or a small commercial site.
6) Is this a single part number or are there multiple versions to choose from?
One configuration only. The Ruud thermostat/gas valve assembly is ordered as SP20303A with no finish, size, or fuel-type options to specify, so there is nothing to select beyond confirming that number is the control your heater takes.
How fast can I get the Ruud SP20303A delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Ruud SP20303A come with a warranty?
Absolutely. The Ruud SP20303A is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Ruud SP20303A?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Ruud SP20303A from ZenSupply?
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