Ruud parts are Rheem-manufactured. Most parts interchange directly with Rheem on equivalent products.
The Ruud parts catalog
- Anode rod — highest-ROI maintenance. Replace every 4-7 years
- Heating element — electric tanks
- Thermostat — electric upper/lower
- Gas valve — integrated; dealer-only replacement
- Thermocouple — standing pilot gas units
- Igniter — electronic ignition
- Heat exchanger — Ultra Series tankless
- Dip tube — broken = hot water runs out fast
Where to buy
- Plumbing wholesaler — Ferguson, Hajoca, Winsupply (Rheem distribution)
- Amazon — anode rods, elements, thermostats, thermocouples
- Ruud authorized installer — full catalog
- Home Depot — Rheem-branded equivalents (often work on Ruud)
Cross-brand compatibility
Most Ruud parts interchange with Rheem (same manufacturing). Gas valves and ignition modules are model-specific — check part number on the failed component before ordering.
Bottom line
Anode rod, element, thermostat, thermocouple, dip tube — DIY-replaceable. Gas valve and heat exchanger through Ruud-authorized installer.