Compare Tankless Water Heater

 Bosch, AO Smith, Rheem, Rinnai vs. Noritz
Comparison

• Life span of tankless water heaters is around 20 years.

• Majority of the parts are replaceable and recyclable.

• All the presented tankless water heaters are high efficient with EF 0.82 or higher, and EnergyStar qualified.

• They use the latest innovative engineering with green technology that is increasing performance while reducing greenhouse CO2 and NOx gases emission.

• These on demand water heaters use direct electronic ignition to ignite the gas burner.

• Great protection with safety features like flame failure, overheat, power failure...

• Materials they are made of are superior quality.

• They are designed to work on both natural and propane gas.

• Maximum input power they got is around 199,900 BTU.

Compare Tankless Water Heater - Bosch Aquastar 2700ES

Bosch 2700ES NG Aquastar 7.2 GPM Indoor Tankless Natural Gas Water Heater

• Solid copper heat exchanger for efficient heat exchange.

• Modulating gas valve for improved combustion.

• Modulating water valve for better comfort and hot water control.

• High efficiency Ceramat Burner with low NOx emission.
  

• Two fans for better performance; primary fan is the mixer and secondary air fan. Fan speed adjustment.

• Front panel has an LCD display with key pad interface control for temperature and failure code display.

• Wireless remote to control the temperature of the hot water.

• Option to install outside with an outdoor kit.

• Pressure relief valve supplied.

• High altitude options up to 4500 and 8000 ft.

• 12-year warranty on heat exchanger and 2 years on other replacement parts for residential installations.

Rheem RTGL74

Rheem Outdoor Liquid Propane & Natural Gas Tankless Water Heater For 2-3 Bathroom Homes RTGL-74XP

• Environmentally friendly gas burner with low NOx emission.
  

• Wireless remote to control the temperature of the hot water.

• Intelligent electronic system and self diagnostic program.

• EZ Link to connect two tankless units to operate as one, for high demand application.

• Guardian SBT sensing burner technology.

• Guardian OFW overheat film wrap.

• Two high altitude options up to 6560 and 9840.

• Option to link up to 20 unit manifold installation.

• Three tankless models available: Indoor, Outdoor and Direct vent.

• 12-year warranty on heat exchanger and 5 years on other replacement parts for residential installations.

• Rheem RTGL74 price is around $950.

Rinnai R94LS

Rinnai R94LSiN Natural Gas Indoor Tankless Water Heater

• Commercial grade heat exchanger

• Integrated digital controller available with the error code indicator.

• Integrated condensate collector on the indoor model.

• EZConnect to connect two tankless units to operate as one, for high demand application.

• High altitude options up to 10200 ft.

• Option to link up to 5 tankless into one water heating system.

• Indoor and outdoor venting installation.

• 12-year warranty on heat exchanger and 5 years on other replacement parts for residential installations.

• Rinnai R94LSi price is around $1100.

Compare Tankless Water Heater - Noritz N-0842MC

NORITZ 8.4 GPM Direct Vent Condensing Water Heater

• Dual heat heat exchanger - fusion of stainless steel and commercial grade copper heat exchanger with 25% thicker piping.

• Over 93% energy efficiency.

• Great reduction of CO2.

• Due to lower exhaust temperatures less costly PVC venting is used, instead of expensive stainless steel.

• Turbo flow feature allows higher hot water flow.

• Amazing 8.4 gallons per hour for 45 degree rise, others are in a range of 7 gpm.

• It uses Quick-Connect to connect two identical units to double the heating output.

• It also uses a multi system to connect up to 24 units.

• Recirculation compatible.

• Self diagnostic onboard computer system.

• 12-year warranty on the heat exchanger and 5 years on other replacement parts for residential installations.

• NORITZ 8.4 GPM price is around $1700.