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Quick specs
Brand
Rheem PROTECH
Part Number
RTG20235BC
Replaces
RTG20235C
Part Type
Ignitor coil with wire
Voltage
120V
Fits
Rheem, Ruud, Richmond tankless gas water heaters (RTGH-84, RTGH-90 and others)
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.
SKU: RTG20235BC · Category: IGNITOR COILS

RHEEM PROTECH Ignitor Coil RTG20235BC

Direct Replacement Ignitor Coil·High-Voltage Spark Ignition

$45.38

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  • Free shipping — most items ship by the next day

Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.

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SKU: RTG20235BC · Category: IGNITOR COILS
RHEEM PROTECH Ignitor Coil RTG20235BC
Quick specs
Brand
Rheem PROTECH
Part Number
RTG20235BC
Replaces
RTG20235C
Part Type
Ignitor coil with wire
Voltage
120V
Fits
Rheem, Ruud, Richmond tankless gas water heaters (RTGH-84, RTGH-90 and others)
Not sure this fits your unit?
Call us with your model number and we'll confirm the right part before you order.

RHEEM PROTECH Ignitor Coil RTG20235BC

The RTG20235BC Ignitor Coil (also known as an igniter coil) is a high-quality, direct replacement part designed to restore reliable ignition in tankless gas water heaters. It uses a high-voltage spark to ignite the gas burner efficiently, eliminating the need for a standing pilot light and ensuring quick, consistent starts every time you need hot water.

Key Specifications

  • Part Number: RTG20235BC (replaces older RTG20235C)
  • Type: Hot surface or spark ignitor coil with wire
  • Voltage: 120 Volts
  • Function: Delivers a high-voltage spark to ignite the gas burner
  • Material: Durable, high-temperature resistant construction for long-lasting performance
  • Installation: Easy access and straightforward replacement within the tankless water heater unit
  • Condition: Genuine OEM or premium aftermarket equivalent (new in original packaging)

Compatibility

This ignitor coil is fully compatible with tankless gas water heaters from the following major brands:

  • Rheem
  • Ruud
  • Richmond

It fits a wide range of popular models, including series such as:

  • RTGH-84 (DVL-1, DVL-2)
  • RTGH-90
  • And many other Rheem/Ruud/Richmond tankless models

It is commonly used to resolve error code 11 (ignition failure) on Rheem tankless units.

Capabilities & Benefits

  • Reliable Ignition: Provides strong, consistent sparking for fast burner ignition and dependable hot water on demand.
  • Energy Efficient: Supports electronic ignition systems that eliminate wasteful standing pilots.
  • Durable Performance: Built to withstand high temperatures and resist wear, helping extend the overall lifespan of your water heater.
  • Cost-Effective Repair: A simple, affordable fix compared to full unit replacement — ideal for DIY or professional service.
  • Direct Fit: Matches OEM specifications for perfect compatibility and seamless operation.

Note: Always verify your specific water heater model number before purchase to ensure exact fitment.

This RTG20235BC ignitor coil is the perfect solution for restoring your tankless water heater to peak performance with minimal downtime.

Key features
  • Direct Replacement Ignitor Coil — replaces older RTG20235C
  • High-Voltage Spark Ignition — no standing pilot light needed
  • Quick, Consistent Starts — reliable ignition every time you need hot water
  • Multi-Brand Fit — Rheem, Ruud and Richmond tankless gas heaters

Why homeowners choose NAW

Genuine OEM parts

Every part we sell is the real thing — authorized, factory-genuine, and backed by the full manufacturer warranty.

Easy online ordering

Find your part by model number, add to cart, and get it delivered to your door — no middleman, no markup.

30-day hassle-free returns

Ordered the wrong part? Send it back within 30 days.

Help when you need it

Not sure if this is the right part? Call us at (888) 292-0874 and we’ll help you find the correct replacement.

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