Best Bosch Natural Gas Water Heaters In June 2025

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 Buy Now	9.7 Buy Now
2	Rinnai RUCS65IN Tankless Hot Water Heater, 6.5 GPM, Natural Gas, Indoor Installation Buy Now	9.5 Buy Now
3	Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural Buy Now	9.1 Buy Now

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

1

Buy Now

9.7/10 our score

Buy Now

• Energy and space efficient: space-saving design conserves energy as it heats only when necessary
• Instant heating: circ-logic technology enables recirculation patterns that coincide with your typical habits, wi-fi monitoring creates hot water on demand
• 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
• Optimal water pressure: high-performance 7.5 gpm hot water flow rate for a powerful, constant stream

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

2

Buy Now

9.5/10 our score

Buy Now

• 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
• Multiple venting options available including pvc/cpvc using the ubbink concentric to twin pipe adaptor allow for an easy installation

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

3

Buy Now

9.1/10 our score

Buy Now

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