Rinnai Parts

A tankless water heater that suddenly produces lukewarm showers is rarely the boiler itself. More often, it is a fan motor that has lost speed, a vent screen blocked by debris, a flame sensor reading dirty, or a control board that stopped registering inputs. Rinnai parts handle every one of these scenarios at the component level, which is the difference between a 90-minute repair and a $3,000 replacement quote. We stock genuine Rinnai tankless parts, Rinnai water heater parts, and Rinnai heater parts across the full SENSEI series, RU and RUR cover assemblies, V series furnaces, and the venting and isolation hardware most installers run through routinely.

This collection covers Rinnai water heater parts in three broad categories. Combustion and airflow components include fan motor assemblies for RL94e, RL75e, and VC indoor tankless heaters, vent screens for both intake and 3-inch combustion air, and air inlet assemblies. Venting and termination hardware covers non-condensing roof termination kits, concentric vertical termination kits, starter adapters, and pipe cover enclosures for SENSEI SE+ models. Service and conversion components include LP-to-NG conversion kits for SENSEI RU160e tankless units, Matsui isolation valve kits, retrofit door replacement kits for V53De units, and a recirculation pump kit that enables Rinnai Circ-Logic technology (WiFi and app control require a separately sold wireless module). Every component is genuine OEM Rinnai equipment.

Why Choose Rinnai Parts from HVAC Store?

• Genuine OEM Rinnai parts that maintain manufacturer warranty coverage and meet original safety specifications.

• Comprehensive coverage across SENSEI, RU, RUR, RSC, RX, and V series units, plus parts for Rinnai tankless water heater venting and combustion systems.

• Our dedicated technical team is here to help you identify the correct part by model and serial number, eliminating guesswork on part compatibility.

• Quality-focused inventory that keeps your Rinnai tankless water heater or heating unit running at original performance with parts engineered specifically for the equipment.

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Best Rinnai Parts for...

Rinnai Tankless Water Heater Parts for Restart Issues

The best Rinnai tankless water heater parts for restart issues are fan motor assemblies. Rinnai offers fan motor kits compatible with RL94e, RL75e, and VC indoor tankless water heaters, addressing the most common cause of slow startup or stalled operation as units age.

Natural Gas to Propane Conversions

The best Rinnai parts for natural gas to propane conversions are model-specific gas conversion kits. The SENSEI RU160e LP-to-NG conversion kit, for example, switches between LP and NG configurations using OEM components that maintain warranty coverage.

Vent System Maintenance

The best parts for Rinnai tankless water heater vent system maintenance are intake and exhaust vent screens. The dual-screen set protects PVC and CPVC venting from birds, debris, and insects, while the 3-inch room air intake screen handles dedicated combustion air systems.

Recirculation and Hot Water Delivery Speed

The best Rinnai parts for recirculation and hot water delivery speed are recirculation pump kits. The Rinnai recirculation pump kit enables Circ-Logic recirculation, reducing wait time at distant fixtures via scheduled or on-demand operation. Paired with a separately sold wireless module, the pump can be controlled remotely through the Rinnai Central app for scheduling and vacation mode.