Answering the search for a dependable water heater pilot assembly, this guide highlights five compatible options to restore reliable ignition and heat. Each product suits different system types, including Whirlpool, A.O. Smith, American, Kenmore, Reliance, and Rheem/Ruud/Richmond gas water heaters. The top picks are best for homeowners seeking straightforward replacements, while some are better for RV or propane configurations. Use the brief product table to compare key fitment and application at a glance.
| Product | Best For | Key Compatibility |
|---|---|---|
| 1) 100112330 Water Heater Pilot Assembly | Whirlpool, AO Smith, American, Reliance, State | Whirlpool, AO Smith, American, Reliance, State models listed |
| 2) Upgraded SP20075 Pilot and Igniter Assembly | Rheem, GE, Richmond nat. gas heaters | RHG PRO50-40F to 3WA64 and similar |
| 3) Upgrade 100112330 Replacement Kit | Multiple major brands | Whirlpool, A.O. Smith, Reliance, Kenmore, State, American |
| 4) SP21058 SP20824 Pilot Assembly | Rheem, Ruud, Richmond gas heaters | SP20824/20754/21058/21059/20800 series |
| 5) Atwood 91603 Pilot Assembly (RV) | RV/ camper water heaters | Atwood 91603/91214 replacement |
100112330 Water Heater Pilot Assembly 9007876 Fit for AO Smith/Whirlpool
The 100112330 pilot assembly is designed to fit a broad range of Whirlpool, American, AO Smith, Reliance, and State water heaters. It targets models such as N30T61-303, N40T61-403, N50T61-403, and many others listed in its compatibility notes. This makes it a versatile choice for homeowners who own multiple brands or are unsure of the exact sub-model.
Best for: homeowners with Whirlpool, AO Smith, or American water heaters seeking a direct replacement for the pilot assembly and thermopile. This part is chosen for compatibility across several common models, reducing the need for multiple replacements.
Limitation: verify that the exact model numbers match the compatibility list before ordering, as small variations in size or shape can exist across production runs.
Upgraded SP20075 Pilot and Igniter Assembly Replacement Kit
This kit delivers an upgraded SP20075 pilot and igniter assembly with high-quality materials designed for durability. It addresses issues where the burner takes long to light or fails to stay lit, and it includes gaskets made of silicone to handle high burner temperatures and prevent leaks. This makes it a solid choice for Rheem, GE, and Richmond nat. gas water heaters.
Best for: homeowners facing slow ignition or intermittent flame in Rheem or GE/Natural Gas systems, seeking a comprehensive replacement that includes the igniter and thermocouple components.
Caution: confirm that your model is covered by the kit’s compatibility list and that the appearance matches the replacement before purchasing, as visual variations can occur.
Upgrade 100112330 Water Heater Pilot Assembly
This product is a direct upgrade for 100112330, compatible with a wide set including Reliance, Whirlpool, A.O.Smith, Kenmore, State, and American water heaters. It replaces part numbers such as 1100112330 and 9007876/9007877, addressing issues where the ignition condenses malfunctions or the heater stops heating. It also lists the same broad model compatibility as the first entry.
Best for: buyers who want a widely compatible replacement that can cover several brands with a single part, especially if the home has multiple brand systems.
Limitation: ensure the exact model numbers align with the listed compatible models to avoid incorrect fitment.
SP21058 SP20824 Pilot Assembly for Water Heater Parts
This kit includes a complete pilot burner assembly with thermopile and sparker, suitable for Rheem, Ruud, and Richmond natural gas heaters. It supports models SP20824, SP20754, SP21058, SP21059, and SP20800, and includes an LP orifice for LP propane configurations. It notes the necessity of matching thermocouple connections to existing systems.
Best for: homeowners with specific Rheem/Ruud/Richmond models in need of a full pilot burner assembly including sparker and thermopile, plus LP compatibility where required.
Limitation: verify the electrical thermocouple connection type matches your current setup before ordering.
Water Heater Pilot Assembly For Atwood 91603 (RV)
This RV-specific pilot assembly includes a pilot tube, thermocouple, and a complete assembly suitable for Atwood 91603/91214 units. It is designed for replacement in camper and trailer water heaters, providing a straightforward install by replacing the old igniter in place. The assembly length and fittings are tailored for RV use.
Best for: RV and travel trailer owners needing a direct replacement that is compatible with Atwood RV water heaters to restore reliable ignition in mobile settings.
Caution: RV parts can vary by model year; confirm the part number and fit with your exact Atwood unit before purchasing.
Buying Guide
What should I check before buying a water heater pilot assembly?
- Model compatibility: Compare the exact model numbers listed by the manufacturer with your water heater’s model tag.
- Gas type and ignition components: Confirm whether your heater uses natural gas and whether the kit includes igniter, thermopile, and sparker as needed.
- Electrical connections: Some assemblies require specific thermocouple connections; ensure your system matches.
- Propane vs natural gas: If you have a propane heater or an RV unit, verify LP compatibility when listed.
- RV-specific considerations: For campers, confirm that the length, tubes, and fittings align with your Atwood or similar RV model.
Which option is best for a multi-brand home?
Products that list broad compatibility across Whirlpool, AO Smith, American, Reliance, Kenmore, and State are best for homes with multiple brands. They reduce the need for separate parts and simplify replacements.
What about installation effort?
Some kits emphasize straightforward replacement with minimal tool needs, while others warn of matching electrical and gas connections. Follow included instructions and disconnect power and gas before work.
How to avoid common pitfalls?
- Double-check model numbers to avoid wrong fitment.
- Inspect gaskets and silicone seals for reliability to prevent leaks.
- Confirm whether an LP or NG configuration is required for your unit.
Quick reference: key buyer considerations
- Compatibility breadth: Choose a part list that covers your brands and models.
- Ignition components included: Thermopile, sparker, and pilot tube should be present if ignition reliability is a concern.
- RV readiness: If you own an RV, select RV-specific pilot assemblies to avoid fitment issues.
FAQ
- Q: Will this pilot assembly fix a water heater that won’t ignite? A: A properly matched pilot assembly with a working thermopile and igniter can restore ignition capability when the main burner is otherwise functional.
- Q: How do I know if my part number is correct? A: Check your heater’s model number and part compatibility list; cross-check the 10–12 digit part number in the product description.
- Q: Are these assemblies universal? A: No; they are compatible with specific brands and models. Look for exact matches in the compatibility notes.
- Q: Should I hire a professional to install? A: Installation involves gas and electrical connections; if unsure, consider a licensed technician.
- Q: Do these kits include a thermocouple? A: Some kits include a thermopile and sparker; verify included components in the features list.
- Q: Can I use these on propane and natural gas heaters? A: Some kits specify LP or natural gas compatibility; confirm your gas type before ordering.