Best Bosch Natural Gas Water Heaters In June 2025

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Buy the Best Bosch Natural Gas Water Heaters for your needs. Choose from the Best Bosch Natural Gas Water Heaters on the market. Pick the one that satisfies your need.

To help you in your search, we have completed this list of the Best Bosch Natural Gas Water Heaters.

Top Rated Best Bosch Natural Gas Water Heaters Of 2025

Rank Product Name Score
1
Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation
Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation
9.7
2
Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation
Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation
9.5
3
Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural
Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural
9.1

1. Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation

1
9.7/10 our score

  • Energy and space efficient: space-saving design conserves energy as it heats only when necessary
  • Optimal water pressure: high-performance 7.5 gpm hot water flow rate for a powerful, constant stream
  • Guaranteed to last: 12-, 5-, and 1-year residential and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, parts, and labor respectively
  • Instant heating: circ-logic technology enables recirculation patterns that coincide with your typical habits, wi-fi monitoring creates hot water on demand

2. Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation

2
9.5/10 our score

  • Multiple venting options available including pvc/cpvc using the ubbink concentric to twin pipe adaptor allow for an easy installation
  • Guaranteed to last: 12-, 5-, and 1-year residential factory warranty for heat exchanger, parts, and labor respectively
  • Endless hot water: enjoy unlimited hot water flow throughout the house, compact, durable, and easy to install, professional installation recommended
  • Energy and space efficient: space-saving design conserves energy as it heats only when necessary
  • Optimal water pressure: high-performance 6.5 gpm hot water flow rate for a powerful, constant stream

3. Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural

3
9.1/10 our score

  • Low nox
  • Remote thermostat & 6' power cord included
  • Can be vented with schedule 40 pvc pipe and fitting
  • High efficiency
  • Endless hot water

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