Upgrade your home’s comfort and efficiency with the Rinnai E75CRP E-Series Wall-Mounted Condensing Combi Boiler, engineered to deliver reliable whole-house heating and domestic hot water in one compact, ultra-efficient system. Perfect for homes with up to two bathrooms, this ENERGY STAR® rated propane boiler provides powerful performance while reducing energy consumption and operating costs.

Designed as a modern retrofit solution for outdated traditional boilers, the Rinnai E75CRP features advanced condensing technology, ultra-low NOx emissions, and a space-saving wall-mounted design that frees valuable floor area. With heating outputs adjustable from 37,000 to 85,000 BTU, and a maximum domestic hot water flow rate of 2.1 GPM, this boiler ensures consistent warmth and steady hot water year-round.

Whether you’re upgrading an older system or building a high-efficiency home, the Rinnai E-Series delivers exceptional reliability, easy installation, and long-term performance you can trust.

Key Features:

• 75,000 BTU Central Heating Capacity for dependable whole-home comfort
• ENERGY STAR® Certified for exceptional efficiency and reduced energy costs
• Condensing Technology maximizes heat extraction, minimizing fuel waste
• Dual Function: Provides both home heating and domestic hot water
• Ultra Low NOx Emissions – SCAQMD approved for cleaner operation
• Compact Wall-Mounted Design saves space and simplifies installation
• Reliable Propane Operation ideal for homes without natural gas
• 2.1 GPM Maximum Hot Water Flow Rate for up to two bathrooms
• Wide BTU Modulation Range (37,000–85,000 BTU) for precise comfort control
• Perfect Retrofit Option for replacing older, less efficient boilers
  

What’s Included

• Rinnai E75CRP E-Series Combi Boiler Unit
• Wall-mount installation hardware
• User & installation manual
• Built-in internal pump and sensors (factory assembled)
• Manufacturer warranty documentation
  

Specifications

Care & Maintenance Instructions

• Annual Professional Service: Schedule yearly maintenance for optimal performance and longevity.
• Keep Air Intake/Cover Vents Clear: Ensure no dust, debris, or obstructions reduce airflow.
• Monitor Pressure Levels: Check boiler pressure periodically; refer to the user manual for ideal ranges.
• Flush System as Needed: Helps prevent scale buildup and maintain heat exchanger efficiency.
• Inspect for Leaks or Odors: Contact a licensed technician immediately if abnormalities are detected.
• Use Only Approved Propane Supply: Ensure clean, regulated propane for safe combustion.
• Avoid Covering the Unit: Maintain proper ventilation around the wall-mounted boiler.