Compare Noritz vs. Rinnai vs. Takagi

Compare Noritz vs. Rinnai vs. Takagi, specifications, and top features so you can buy the best tankless water heater for heating potable water and home space. Find out which manufacturer has the largest selection of models, most Energy Star models, and water heaters with the best features.

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Best tankless water heater comparison

Best of Rinnai - Specifications

Models / Specs RUR98i RU98e RUC98i
Gas input
(BTU)		 15,200
199,000		 15,200
199,000		 15,200
199,000
Water flow (GPM)
30 F temp.rise		 9.8 9.8 9.8
Energy Factor 0.92 0.92 0.92
Temp. settings (F) 98-140 98-140/185 98-140/185
Weight (lbs) 72.8 61.7 61.7
Remote PROVIDED PROVIDED INTEGRATED
Ultra-Low NOx YES YES YES
WiFi ready YES YES YES
Recirculation YES YES YES
Warranty 12 12 12

Features

  • Super high efficiency
  • Condensing technology
  • Ultra Low NOx gas emission
  • WiFi ready for remote control
  • Recirculation for faster water delivery
  • Mobile home certified
  • Multiple venting options for condensing models
  • Energy Star
  • Isolation valves included
  • Warranty - 12 years

Best of Noritz - Specifications

Models / Specs NRCP1112 NRCB199 NRC111
Gas input (BTU) 18,000
199,900		 18,000
199,900		 16,000
199,900
Water flow (GPM)
30 F temp.rise		 11.1 11.1 11.1
Energy Factor 0.94 95% 0.92
Temp. settings (F) 100-140 90-140
80-180		 100-140
Weight (lbs) 85 95 66
Remote INTEGRATED INTEGRATED PROVIDED
Ultra-Low NOx NO NO NO
WiFi ready ? ? ?
Recirculation YES YES NO
Warranty 12 10 12

Features

  • High efficient
  • Condensing
  • Highest water flow
  • Warranty - 12 years
  • Low NOx burner
  • Large display (some models)
  • Internal pump, recirculation compatible, two modes
  • Commercial grade heat exhangers and dual flame burners
  • Combined domestic and space heating (some models)
  • Communication cable to connect two units into one system for bigger capacity
  • Optional isolation valves
  • Energy Star approved

Best of Takagi - Specifications

Models / Specs T-H3-DV-N TK-540P-NIH
Gas input (BTU) 19,500
199,000		 19,500
199,000
Water flow (GPM)
30 F temp.rise		 10 10
Energy Factor 0.93 0.93
Temp. settings (F) 100-140 100-140
Weight (lbs) 71 70
Remote INTEGRATED INTEGRATED
Ultra-Low NOx YES YES
WiFi ready ? ?
Recirculation NO YES
Warranty 15 15

Features

  • High Efficiency
  • Condensing technology
  • Integrated temperature controller
  • Warranty - 15 years
  • Ultra Low NOx models available
  • Easy-Link up to four units
  • Multi-Link up to 20 units
  • Energy Star approved

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