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Free Shipping on qualified orders over $599! Excluding HI, AK & Canada, and products marked Special Handling. *Some Items Excluded*

Rheem Tankless Water Heaters

Rheem Tankless Water Heaters

Professional installation guides and technical videos for optimal tankless water heating system performance. Learn from industry experts about Rheem's innovative tankless water heaters designed to enhance efficiency and reliability.

Rheem Ikonic Super High Efficiency Tankless Water Heater

Discover Rheem's reliable RTG-3 series mid-efficiency tankless water heaters. These non-condensing units offer dependable performance with proven technology, perfect for residential applications where space and budget are key considerations.

  • Non-condensing technology with proven reliability
  • Compact design ideal for tight installation spaces
  • Available in multiple BTU ratings for various applications

How The Rheem Ikonic Works

Learn about Rheem's advanced RTGH-3 series high-efficiency condensing tankless water heaters. These premium units deliver maximum energy savings with ultra-high efficiency ratings and advanced features for demanding applications.

  • Condensing technology with up to 94% thermal efficiency
  • ENERGY STAR® certified for maximum savings
  • Advanced modulation for precise temperature control

Rheem RTGH Series Condensing Tankless

Explore the key differences between indoor and outdoor tankless water heater installations. This comprehensive guide covers venting requirements, climate considerations, and space optimization for both installation types.

  • Indoor units: Venting requirements and clearances
  • Outdoor units: Weather protection and freeze prevention
  • Gas line sizing and electrical requirements

Rheem RTG Non-Condensing Tankless

Experience professional installation with step-by-step guidance from certified technicians. Learn proper mounting, gas connections, water line installation, and initial system commissioning procedures for optimal performance.

  • Proper unit mounting and securing techniques
  • Gas line connections and leak testing procedures
  • Initial startup and system commissioning

How The Rheem RTGH Series Works

Ensure long-term reliability with proper maintenance procedures and troubleshooting techniques. Learn how to perform routine service, identify common issues, and implement preventive maintenance schedules.

  • Annual descaling and cleaning procedures
  • Filter inspection and replacement schedules
  • Error code diagnosis and resolution

How The Rheem RTG Series Works

Choose the perfect Rheem tankless water heater for any application with our comprehensive sizing and selection guide. Learn how to calculate demand, consider climate factors, and select optimal BTU ratings.

  • Hot water demand calculation and flow rates
  • Temperature rise requirements by climate zone
  • BTU rating selection for optimal performance

🏆 Why Choose Rheem Components?

✓ Industry Leading

Over 100 years of innovation in water heating technology

✓ Professional Grade

Engineered for commercial and residential applications

✓ Expert Support

Comprehensive technical resources and installation guidance

Need help selecting the right Rheem tankless water heater for your project?

Our water heating experts are here to help you choose the perfect tankless water heater for optimal system performance.