Gas Tankless Water Heater Reviews (7-8 GPM)

Gas Tankless Water Heater Reviews
Ratings Guide
Best
Better
Good
Fair
Poor
Go To: Tankless Gas 5-6 GPM | 7-8 GPM | 9 GPM | 10 GPM | 11-19 GPM

Navien
NPE-180A-NG

Type: 8.4 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $1000
Energy

0.97

Factor
Utility Cost

$209

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$119

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4100

Install+Utilities
Navien
NPE-180S-NG

Type: 8.4 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $1000
Energy

0.99

Factor
Utility Cost

$204

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$119

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4000

Install+Utilities
Rheem
ECO180DVLN3

Type: 8.4 GPM Tankless
Fuel: Natural Gas
Flow: 3.9 GPM (77* Rise)
Nominal Price: $1000
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$119

Per GPM
Vent

Direct

Type
10 Yr Cost

$4500

Install+Utilities
Rheem
ECO180XLN3

Type: 8.4 GPM Tankless
Fuel: Natural Gas
Flow: 3.9 GPM (77* Rise)
Nominal Price: $800
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$95

Per GPM
Vent

Power

Type
10 Yr Cost

$4300

Install+Utilities
Rheem
ECOH160DVLN

Type: 8.4 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $1000
Energy

0.92

Factor
Utility Cost

$220

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$119

Per GPM
Vent

Direct

Type
10 Yr Cost

$4200

Install+Utilities
Rheem
ECOH160XLN

Type: 8.4 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $1100
Energy

0.92

Factor
Utility Cost

$220

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$131

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4300

Install+Utilities
Richmond
RMTGH84DVLN

Type: 8.4 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $900
Energy

0.92

Factor
Utility Cost

$220

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$107

Per GPM
Vent

Direct

Type
10 Yr Cost

$4100

Install+Utilities
Richmond
RMTGH84XLN

Type: 8.4 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $900
Energy

0.92

Factor
Utility Cost

$220

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$107

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4100

Install+Utilities
Bosch
Therm 830 ES NG

Type: 8.3 GPM Tankless
Fuel: Natural Gas
Flow: 3.7 GPM (77* Rise)
Nominal Price: $1000
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$120

Per GPM
Vent

Atmos

Type
10 Yr Cost

$4500

Install+Utilities
Noritz
NR83-DVC-NG

Type: 8.3 GPM Tankless
Fuel: Natural Gas
Flow: 4 GPM (77* Rise)
Nominal Price: $1100
Energy

0.85

Factor
Utility Cost

$238

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$133

Per GPM
Vent

Direct

Type
10 Yr Cost

$4500

Install+Utilities
A O Smith
ATI-310-N

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4.1 GPM (77* Rise)
Nominal Price: $1100
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

Power

Type
10 Yr Cost

$4600

Install+Utilities
A O Smith
ATI-310U-N

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4.1 GPM (77* Rise)
Nominal Price: $1100
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

Power

Type
10 Yr Cost

$4600

Install+Utilities
A O Smith
ATI-340H-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.5 GPM (77* Rise)
Nominal Price: $1200
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$150

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4300

Install+Utilities
A O Smith
ATO-310-N

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4.1 GPM (77* Rise)
Nominal Price: $1100
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

Power

Type
10 Yr Cost

$4600

Install+Utilities
A O Smith
ATO-310U-N

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4.1 GPM (77* Rise)
Nominal Price: $1100
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

Power

Type
10 Yr Cost

$4600

Install+Utilities
A O Smith
ATO-340H-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.5 GPM (77* Rise)
Nominal Price: $1200
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$150

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4300

Install+Utilities
American
GT-310-NE

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$113

Per GPM
Vent

Power

Type
10 Yr Cost

$4400

Install+Utilities
American
GT-310-NI

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$113

Per GPM
Vent

Power

Type
10 Yr Cost

$4400

Install+Utilities
American
GT-310-UE

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$113

Per GPM
Vent

Power

Type
10 Yr Cost

$4400

Install+Utilities
American
GT-310-UI

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$113

Per GPM
Vent

Power

Type
10 Yr Cost

$4400

Install+Utilities
Navien
NR-180A-NG

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.6 GPM (77* Rise)
Nominal Price: $1000
Energy

0.94

Factor
Utility Cost

$215

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$125

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4200

Install+Utilities
Navien
NR-180-NG

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.6 GPM (77* Rise)
Nominal Price: $1000
Energy

0.96

Factor
Utility Cost

$211

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$125

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4100

Install+Utilities
Reliance
TS-340-GEH

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.5 GPM (77* Rise)
Nominal Price: $1400
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$175

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4500

Install+Utilities
Reliance
TS-340-GIH

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.5 GPM (77* Rise)
Nominal Price: $1400
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$175

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4500

Install+Utilities
Rinnai
RU80e-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.9 GPM (77* Rise)
Nominal Price: $1300
Energy

0.96

Factor
Utility Cost

$211

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$163

Per GPM
Vent

Power

Type
10 Yr Cost

$4400

Install+Utilities
Rinnai
RU80i-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.9 GPM (77* Rise)
Nominal Price: $1200
Energy

0.96

Factor
Utility Cost

$211

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$150

Per GPM
Vent

Power

Type
10 Yr Cost

$4300

Install+Utilities
Rinnai
RUC80i-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.8 GPM (77* Rise)
Nominal Price: $1300
Energy

0.96

Factor
Utility Cost

$211

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$163

Per GPM
Vent

Direct

Type
10 Yr Cost

$4400

Install+Utilities
Takagi
T-H3-OS-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.9 GPM (77* Rise)
Nominal Price: $1100
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

Power

Type
10 Yr Cost

$4200

Install+Utilities
Takagi
T-H3S-DV-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.4 GPM (77* Rise)
Nominal Price: $1100
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4200

Install+Utilities
Takagi
T-H3S-OS-N

Type: 8 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 4.4 GPM (77* Rise)
Nominal Price: $1100
Energy

0.95

Factor
Utility Cost

$213

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$138

Per GPM
Vent

Power

Type
10 Yr Cost

$4200

Install+Utilities
Takagi
T-K4-IN-N

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4.1 GPM (77* Rise)
Nominal Price: $800
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$100

Per GPM
Vent

PowerD

Type
10 Yr Cost

$4300

Install+Utilities
Takagi
T-K4-OS-N

Type: 8 GPM Tankless
Fuel: Natural Gas
Flow: 4.1 GPM (77* Rise)
Nominal Price: $800
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

15

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$100

Per GPM
Vent

Power

Type
10 Yr Cost

$4300

Install+Utilities
Bradford White
TG-180E-N

Type: 7.5 GPM Tankless
Fuel: Natural Gas
Flow: 4.6 GPM (65* Rise)
Nominal Price: $1200
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$160

Per GPM
Vent

Atmos

Type
10 Yr Cost

$4700

Install+Utilities
Bradford White
TG-180I-N

Type: 7.5 GPM Tankless
Fuel: Natural Gas
Flow: 4.6 GPM (65* Rise)
Nominal Price: $1200
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$160

Per GPM
Vent

Atmos

Type
10 Yr Cost

$4700

Install+Utilities
Rinnai
RL75e-N

Type: 7.5 GPM Tankless
Fuel: Natural Gas
Flow: 3.8 GPM (77* Rise)
Nominal Price: $1000
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$133

Per GPM
Vent

Direct

Type
10 Yr Cost

$4500

Install+Utilities
Rinnai
RL75i-N

Type: 7.5 GPM Tankless
Fuel: Natural Gas
Flow: 3.8 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$120

Per GPM
Vent

Direct

Type
10 Yr Cost

$4400

Install+Utilities
Rinnai
V75e-N

Type: 7.5 GPM Tankless
Fuel: Natural Gas
Flow: 3.8 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$120

Per GPM
Vent

Direct

Type
10 Yr Cost

$4400

Install+Utilities
Rinnai
V75i-N

Type: 7.5 GPM Tankless
Fuel: Natural Gas
Flow: 3.8 GPM (77* Rise)
Nominal Price: $900
Energy

0.82

Factor
Utility Cost

$247

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$120

Per GPM
Vent

Direct

Type
10 Yr Cost

$4400

Install+Utilities
Noritz
NRC711-DV-NG

Type: 7.1 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.9 GPM (77* Rise)
Nominal Price: $1000
Energy

0.94

Factor
Utility Cost

$215

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$141

Per GPM
Vent

Direct

Type
10 Yr Cost

$4200

Install+Utilities
Noritz
NRC711-OD-NG

Type: 7.1 GPM Tankless
Fuel: Natural Gas Condensing
Flow: 3.9 GPM (77* Rise)
Nominal Price: $1000
Energy

0.94

Factor
Utility Cost

$215

National Avg
Warranty

12

Yrs Tank/HE
Warranty

5

Yrs Parts
Unit Cost

$141

Per GPM
Vent

Power

Type
10 Yr Cost

$4200

Install+Utilities

About This Data: Operating and 10 year costs are based on US EIA national averages of Electricity ($0.0125/kWh), Natural Gas ($13.50/1000 ft3), and Propane ($3.00/gal). Your state may be higher or lower, so compare relative costs between water heaters. Listed water heater prices are nominal and may vary. Installation costs are assumed $300 (tanks) and $1,000 (tankless).

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