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0.95+ (59)

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Indoor Only (93)
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Outdoor Only (62)

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5.8 (8)
6 (1)
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100,000 (2)
120,000 (14)
130,000 (2)
140,000 (15)
157,000 (6)
160,000 (21)
165,000 (2)
170,000 (2)
180,000 (25)
190,000 (7)

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Concentric Direct-Vent Termination (6)
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Power Direct Vent (8)

Flow Rate At 70F Temp Rise (GPM)
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3.2 (6)
3.3 (8)
3.5 (1)
3.6 (1)
3.8 (4)
4.2 (4)
4.3 (9)
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4.5 (5)

Flow Rate At 60F Temp Rise (GPM)
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3.3 (4)
3.7 (2)
3.8 (10)
3.9 (2)
4 (1)
4.2 (1)
4.4 (3)
4.9 (4)
5 (10)
5.2 (2)

Review Score
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(131)
(21)
(3)
(4)
(6)

Price Range
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$100 to $200 (1)
$300 to $400 (2)
$400 to $500 (2)
$500 to $600 (7)
$600 to $700 (8)
$700 to $800 (6)
$800 to $900 (11)
$900 to $1000 (18)
$1000 to $1500 (123)
$1500 to $2000 (110)

Residential Gas Water Heaters

414 items
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Product Image of 398,000 BTU Commercial Indoor Tankless Rack System - Free-Standing Back-to-Back (NG)
$8,856.96 each
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Product Image of 597,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
$9,738.57 each
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Product Image of ACO-CRS-23WM-N 398,000 BTU Commercial Outdoor Tankless Rack System - Wall Mount (NG)
$6,489.72 each
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Product Image of ACO-CRS-22WM-N 398,000 BTU Commercial Outdoor Tankless Rack System - Wall Mount (NG)
$6,066.13 each
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Product Image of NRC661 120,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (NG)
$1,052.69 each
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Product Image of RTG-199HE-N INFINITI High Efficiency Indoor Tankless Condensing Water Heater (8.3 GPM, NG)
$1,822.50 each
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Product Image of 50 Gallon - 34,000 BTU Residential Ultra Low NOx Gas Water Heater (Natural Gas)
$1,772.91 each
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Product Image of 50 Gallon - 40,000 BTU Residential Ultra Low NOx Gas Water Heater (Natural Gas)
$2,017.74 each
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Product Image of 199,000 BTU Ultra Low-NOx w/X3 Technology Liquid Propane Outdoor Condensing Tankless Water Heater (10 GPM)
$2,028.98 each
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Product Image of Sapphire Series 14L 100,000 BTU Tankless Water Heater (NG)
$597.10 each
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Product Image of 48 Gallon - 48,000 BTU Defender Safety System High Input Direct Vent Energy Saver Residential Water Heater (LP Gas)
$2,577.29 each
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Product Image of 50 Gallon - 38,000 BTU Defender Safety System PDX1 Power Direct Vent Energy Saver Residential Water Heater (LP Gas)
$3,522.91 each
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Product Image of 40 Gallon - 38,000 BTU TTW Power Vent Energy Saver Residential Water Heater (Propane)
$2,163.97 each
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Product Image of 40 Gallon - 34,000 BTU Defender Safety System High Efficiency Residential Atmospheric Water Heater (Propane)
$1,281.37 each
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Product Image of 48 Gallon - 40,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (Nat Gas)
$1,430.85 each
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Product Image of 50 Gallon - 42,000 BTU Defender Safety System Direct Vent Energy Saver Residential Water Heater (Nat Gas)
$2,117.59 each
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Product Image of 30 Gallon - 30,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (Nat Gas)
$1,289.72 each
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Product Image of 50 Gallon - 38,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (LP Gas)
$1,593.08 each
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Product Image of 40 Gallon - 40,000 BTU Defender Safety System TTW Power Vent High EF Residential Water Heater (LP Gas)
$2,443.28 each
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Product Image of 48 Gallon - 58,000 BTU Defender Safety System TTW2 Power Vent Energy Saver Residential Water Heater (LP Gas)
$2,362.50 each
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Product Image of 50 Gallon XCRL-50 40,000 BTU ProLine Residential Gas Water Heater, 10 Yr Warranty - Short (LP)
$1,310.22 each
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Product Image of 50 Gallon 42,000 BTU EF67 Tall Professional Achiever Power Vent Water Heater, 6 Year (NG)
$2,111.89 each
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Product Image of 40 Gallon 40,000 BTU EF62 Tall Professional Achiever Atmospheric Water Heater, 8 Year (NG)
$1,046.41 each
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Product Image of IKONIC High-Efficiency 10.0 GPM Indoor Condensing Tankless Natural Gas Water Heater with Recirculation Pump, RTGH-SR10I
$1,915.55 each
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Product Image of RTGH Super High Efficiency 9.0 GPM Indoor Condensing Tankless Water Heater (Propane), RTGH-90DVLP-3
$1,345.79 each
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Product Image of 30 Gallon - 27,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (Propane)
$1,313.59 each
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Product Image of 50 Gallon - 76,000 BTU Residential eF Series Power Direct Vent Energy Saver Residential Water Heater (LP Gas)
$4,422.30 each
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Product Image of 40 Gallon - 34,000 BTU Manufactured Home Defender Safety System Atmospheric Vent Energy Saver Water Heater (LP Gas)
$1,355.16 each
In Stock
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Product Image of 50 Gallon - 50,000 BTU Defender Safety System TTW Power Vent High EF Residential Water Heater (Nat Gas)
$2,611.07 each
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Product Image of T-H3-OS-P Outdoor Tankless High Efficiency Condensing Water Heater (LP)
$842.24 each
In Stock
Get 1 by Tue, Oct 20
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Product Image of Builder Series Outdoor Tankless Water Heater (7 GPM, NG)
$699.00 each
In Stock
Get 110 by Thu, Oct 22 - Fri, Oct 23
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Product Image of Therm 940 ES 199,000 BTU Non-Condensing Tankless Water Heater (LP)
$2,816.54 each
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Product Image of ACI-CRS-24IL-N 398,000 BTU Commercial Indoor Tankless Rack System - Free-Standing In-Line (NG)
$8,856.96 each
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Product Image of 190,000 BTU ATI-310C Non-Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG)
$1,171.69 each
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Product Image of 199,000 BTU ATO-540H Condensing Ultra-Low NOx Outdoor Tankless Water Heater (LP)
$1,509.37 each
In Stock
Get 3 by Wed, Oct 21
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Product Image of 120,000 BTU ATO-140H Condensing Ultra-Low NOx Outdoor Tankless Water Heater (NG)
$1,023.00 each
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Product Image of 180,000 BTU ATI-340H Condensing Ultra-Low NOx Indoor Tankless Water Heater w/ X3 Scale Prevention (LP)
$1,876.25 each
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Product Image of ACI-CRS-22WM-N 398,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
$6,066.13 each
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Product Image of ACI-CRS-23WM-N 398,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
$6,489.72 each
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Product Image of 597,000 BTU Commercial Outdoor Tankless Rack System - Wall Mount (NG)
$9,738.57 each
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Product Image of 190,000 BTU ATO-310 Non-Condensing Outdoor Tankless Water Heater (NG/LP)
$1,378.69 each
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Product Image of EZTR50 180,000 BTU Multi Vent Condensing Tankless Water Heater Bundle Pack (LP)
$2,546.36 each
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Product Image of EZ Supreme on Demand Tankless Water Heater, 3-4 Bath w/ Direct Vent Kit (NG)
$896.04 each
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Product Image of EZTR40 120,000 BTU Indoor Direct Vent Condensing Tankless Water Heater Bundle Pack (LP)
$2,106.61 each
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Product Image of 50 Gallon GCF-50 37,000 BTU ProLine Series 100 High Efficiency Residential Gas Water Heater - Tall (LP)
$1,474.02 each
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Product Image of 55 Gallon HWRX-55 ProLine Master Atmospheric Vent Residential Gas Water Heater Tall Model (NG)
$2,309.18 each
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Product Image of 50 Gallon HWRL-50  ProLine Master Atmospheric Vent Residential Gas Water Heater Short Model (NG)
$1,340.37 each
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Product Image of 40 Gallon HUR-40 ProLine Master Atmospheric Vent Residential Gas Water Heater, Ultra-Low Nox Tall Model (NG)
40 Gallon HUR-40 ProLine Master Atmospheric Vent Residential Gas Water Heater, Ultra-Low Nox Tall Model (NG)
SKU: HUR-40
AO Smith
SKU: HUR-40
Brand: AO Smith
$1,593.05 each
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