HOT ! Rinnai RE199iN 199,000 BTU Indoor Non-Condensing Natural Gas Tankless Water Heater

Rinnai RE199iN 199,000 BTU Indoor Non-Condensing Natural Gas Tankless Water Heater

The Rinnai RE199iN is a powerful 199,000 BTU indoor non-condensing tankless water heater designed for high-demand residential applications. Built for performance and reliability, this model delivers continuous on-demand hot water while using a traditional non-condensing venting system.

Ideal For:

• 3–4 bathroom homes


• High-demand households with multiple simultaneous fixtures


• Replacing older Rinnai non-condensing models


• Homes with existing Category III stainless steel venting


• Installations where condensing venting is not preferred

Key Features

• 
  199,000 BTU (199 MBH) maximum input


• Indoor non-condensing design


• Natural gas configuration (iN model)


• Compact wall-mounted installation


• Advanced safety and self-diagnostic system


• Continuous on-demand hot water delivery


• Reliable Rinnai engineering and durability

Performance & Application

With 199,000 BTU of heating power, the RE199iN is designed for larger homes requiring strong simultaneous performance. This model can support multiple showers, appliances, and fixtures at once depending on groundwater temperature and installation conditions.

Non-Condensing vs Condensing: What’s the Difference?

The RE199iN uses a non-condensing heat exchanger, which requires stainless steel Category III venting. Unlike condensing models, it does not use PVC venting and operates at a slightly lower efficiency rating. This makes it a strong replacement option for existing non-condensing installations.

Installation Requirements

• Indoor installation only


• Category III stainless steel venting required


• Proper gas line sizing for 199,000 BTU input


• 120V electrical outlet required


• Professional installation recommended

Compare With Other Rinnai Models

• Looking for higher efficiency? Consider condensing models like RX160iN or RX180iN


• Need outdoor installation? Choose outdoor-rated Rinnai models


• View all models in our Tankless Water Heater collection

Why Buy From United Plumbing & Fire Supply?

• Trusted plumbing supply serving Los Angeles


• Local pickup available


• Competitive pricing and knowledgeable support


• Nationwide shipping available

Frequently Asked Questions

Is the RE199iN condensing?
No. The RE199iN is a non-condensing tankless water heater and requires stainless steel Category III venting.

Is this model natural gas?
Yes. The “iN” model is configured for natural gas.

Can this replace my older Rinnai non-condensing unit?
Yes. It is commonly used as a replacement for older non-condensing Rinnai systems with compatible venting.

Can this unit be installed outdoors?
No. The RE199iN is designed for indoor installation only.

Available for local pickup in Los Angeles or nationwide shipping. Contact United Plumbing & Fire Supply for availability and ordering assistance.