To light the pilot on a Rheem water heater, locate the pilot light assembly, turn the gas control knob to Pilot, press down, and use a long lighter to ignite the pilot flame while continuing to hold the knob for about 30 seconds before releasing it to ensure the pilot stays lit.
Lighting the pilot on your Rheem 4-star gas water heater is essential for continuous hot water. This guide covers all models with step-by-step instructions, troubleshooting tips, and safety precautions.
METER STAR
METER STAR Pilot Burner Assembly Replacement for…
- Pilot burner assembly replacement: Replaces Rheem SP20824 RE523121 and fits select related kits SP20754, SP21058, SP21059 and SP20…
- Natural gas pilot assembly: Set is configured for Natural Gas and includes an LP orifice for propane conversion when the appliance…
- Water heater pilot kit: Includes pilot assembly, thermopile components, sparker igniter, LP burner orifice, mounting screws, orang…
Step-by-Step Pilot Lighting Instructions
Before You Begin
Turn off the gas supply valve and wait 5 minutes for any gas to dissipate. Locate the control knob – it will have settings for “Off,” “Pilot,” and “On.”
Lighting Process
- Turn the gas knob to “Pilot” position
- Press and hold the red button while immediately lighting the pilot with a long lighter
- Keep holding for 30 seconds after ignition
- Release the button and turn knob to “On”
Troubleshooting Common Issues
Pilot Won’t Stay Lit
If the pilot light won’t stay lit after releasing the button:
- Check for drafts near the water heater
- Clean the thermocouple with fine sandpaper
- Ensure gas supply is fully open
No Gas Flow
If you smell gas or suspect a leak, immediately turn off the gas supply and contact a professional. Learn more about gas leak detection in our detailed guide.
Rheem 4-Star Specific Features
The Rheem 4-star series offers 33% lower NOx emissions than standard models. These energy-efficient units have:
| Feature | Benefit |
|---|---|
| 4-Star rating | Higher energy efficiency |
| 135L capacity | Ideal for 3-4 person households |
| Atmospheric vent | No electricity required |
Maintenance Tips
Regular maintenance extends your water heater’s life:
- Check the anode rod annually (see our anode rod replacement guide)
- Flush sediment every 6 months
- Inspect the pilot flame (should be blue with yellow tip)
Safety Precautions
Always follow these safety measures when working with gas appliances:
- Never use matches – only long lighters
- Keep flammable materials away
- Install a carbon monoxide detector nearby
For more information on gas appliance safety, visit Rheem’s official website or consult the U.S. Department of Energy guidelines.
When to Call a Professional
Contact a licensed technician if you experience:
- Persistent gas smell
- Water leaks around the unit
- Pilot light that won’t stay lit after multiple attempts
Understanding your water heater’s operation helps prevent issues. For related information, see our article on how gas water heaters function.
Related pick: Check today's price on Amazon
I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.
Related guides
Easy Rheem Water Heater Conversion Kit: Natural Gas to Propane Review
Switch your Rheem water heater from natural gas to propane quickly with this easy-to-use conversion kit. Save time…
How to Turn On Your Rheem Water Heater: Complete Guide
The water's been cold for two days. You've checked the breaker, maybe fiddled with the dial, and now…
Water Heater Flashing Red? Here’s What It Means
If your water heater is flashing red, it typically indicates a fault or error, such as overheating or…