Rinnai RE180EN 180,000 BTU Outdoor Non-Condensing Natural Gas Tankless Water Heater

Rinnai RE180eN 180,000 BTU Outdoor Non-Condensing Natural Gas Tankless Water Heater

The Rinnai RE180eN is a powerful 180,000 BTU outdoor non-condensing tankless water heater engineered for reliable whole-home performance. Designed specifically for exterior installation, this model eliminates the need for indoor venting while delivering continuous on-demand hot water.

Ideal For:

• 2–3 bathroom homes
• Homes in mild or moderate climates
• Installations where indoor venting is not practical
• Replacing older outdoor non-condensing tankless units
• Retrofit applications requiring exterior mounting

Key Features

• 180,000 BTU (180 MBH) maximum input
• Outdoor-rated non-condensing design
• Natural gas configuration (eN model)
• No indoor stainless steel venting required
• Compact wall-mounted exterior installation
• Advanced safety controls and built-in diagnostics
• Continuous hot water delivery without standby heat loss

Performance & Application

The RE180eN is ideal for mid-sized homes that require dependable simultaneous hot water use. Depending on groundwater temperature, this 180,000 BTU unit can support multiple fixtures at once while maintaining stable performance.

Outdoor Installation Advantages

• No Category III stainless steel venting required
• Preserves interior wall space
• Simplifies retrofit installations
• Designed for exterior weather exposure (per manufacturer specifications)

Non-Condensing vs Condensing

The RE180eN uses a non-condensing heat exchanger. Unlike condensing models that require PVC venting and produce condensate drainage, this unit operates using a traditional non-condensing system optimized for outdoor use.

Installation Requirements

• Outdoor wall-mounted installation only
• Proper gas line sizing for 180,000 BTU input
• 120V electrical connection required
• Installation must meet local building codes
• Professional installation recommended

Compare With Other Rinnai Models

• Need indoor installation? Consider RE180iN (indoor version)
• Need higher capacity? See RE199eN (199,000 BTU outdoor)
• Looking for higher efficiency? Explore Rinnai condensing RX models

Why Buy From United Plumbing & Fire Supply?

• Trusted plumbing supply serving Los Angeles
• Local pickup available
• Competitive pricing
• Nationwide shipping options

Frequently Asked Questions

Is the RE180eN condensing?
No. This is a non-condensing outdoor tankless water heater.

Can this be installed indoors?
No. The RE180eN is designed strictly for outdoor installation.

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

Is this enough for a 3 bathroom home?
Yes, in many 2–3 bathroom homes with moderate simultaneous usage, 180,000 BTU provides strong performance depending on groundwater temperature.

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