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10 bestGa Tankless Hot Water Heaterof December 2025

112M consumers helped this year.

1

Natural Gas Tankless Water Heater, Indoor Max 7.4 GPM, 190,000 BTU Instant Hot Water Heater
Natural Gas Tankless Water Heater, Indoor Max 7.4 GPM, 190,000 BTU Instant Hot Water Heater

Ranein

9.8

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18% off

2

Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey

Rheem

9.6

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3

Stiebel Eltron Tankless Heater – Tempra 36 Plus – Electric, On Demand Hot Water, Eco, White
Stiebel Eltron Tankless Heater – Tempra 36 Plus – Electric, On Demand Hot Water, Eco, White

Stiebel Eltron

9.3

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4

CAMPLUX Propane Tankless Water Heater Gas, 4.22 GPM On Demand Propane Water Heater Gas, 102000 BTU Instant Hot Water Heater with Touchscreen, 120V Indoor, White
CAMPLUX Propane Tankless Water Heater Gas, 4.22 GPM On Demand Propane Water Heater Gas, 102000 BTU Instant Hot Water Heater with Touchscreen, 120V Indoor, White

CAMPLUX ENJOY OUTDOOR LIFE

9.0

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5

RINNAI RL Series He+ Tankless Hot Water Heater: Indoor Installation
RINNAI RL Series He+ Tankless Hot Water Heater: Indoor Installation

Rinnai

8.8

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Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, Gray

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, Gray

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thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise, Side Connections

thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise, Side Connections

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CAMPLUX Mini Tank Electric Water Heater 5L (1.3 Gallons), Hot Water Heaters 120V, Under Sink Water Heater with Cord Plug 1.44kW

CAMPLUX Mini Tank Electric Water Heater 5L (1.3 Gallons), Hot Water Heaters 120V, Under Sink Water Heater with Cord Plug 1.44kW

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Gleyi 6L Tankless Water Heater, 1.58 GPM Portable Tankless Water Heater, On Demand Instant Hot Water Heater with Overheating Protection, for RV Camping, Outdoor Shower

Gleyi 6L Tankless Water Heater, 1.58 GPM Portable Tankless Water Heater, On Demand Instant Hot Water Heater with Overheating Protection, for RV Camping, Outdoor Shower

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10% off

6

Tankless Water Heater Propane, 4.21GPM 16L Indoor,Instant Hot Propane Gas Water Heater,Constant Propane Water Heater with Fahrenheit Digital Display,Multi-Protection (Black)
Tankless Water Heater Propane, 4.21GPM 16L Indoor,Instant Hot Propane Gas Water Heater,Constant Propane Water Heater with Fahrenheit Digital Display,Multi-Protection (Black)

DWALE

8.5

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5% off

7

FOGATTI Natural Gas Tankless Water Heater, Indoor 4.0 GPM, 90,000 BTU Instant Hot Water Heater, Instagas Classic 90 Series
FOGATTI Natural Gas Tankless Water Heater, Indoor 4.0 GPM, 90,000 BTU Instant Hot Water Heater, Instagas Classic 90 Series

FOGATTI

8.2

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8

Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation
Rinnai V53DeN Tankless Hot Water Heater, 5.3 GPM, Natural Gas, Outdoor Installation

Rinnai

7.9

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9

CAMPLUX 65,000 BTU RV Water Heater, 2.64 GPM RV Tankless Hot Water Heaters with 15.2×15.2 Inches Door and Remote Controller, Propane Tankless RV Water Heater with Mixing Tank DC12V/5A
CAMPLUX 65,000 BTU RV Water Heater, 2.64 GPM RV Tankless Hot Water Heaters with 15.2×15.2 Inches Door and Remote Controller, Propane Tankless RV Water Heater with Mixing Tank DC12V/5A

CAMPLUX ENJOY OUTDOOR LIFE

7.7

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10

Mizudo Propane Gas Tankless Water Heater 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water Heater
Mizudo Propane Gas Tankless Water Heater 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water Heater

MIZUDO

7.4

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