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0.60 - 0.65 (121)
0.65 - 0.70 (52)
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0.90 - 0.95 (85)
0.95+ (65)

Flow Rate At 50F Temp Rise (GPM)

3.9 (4)
4.4 (6)
4.5 (2)
4.6 (6)
4.8 (1)
5.1 (1)
5.3 (3)
5.8 (4)
6.1 (11)
6.2 (6)

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Indoor Only (99)
Indoor/Outdoor (28)
Outdoor (1)
Outdoor Only (68)

Flow Rate At 40F Temp Rise (GPM)

4.9 (2)
5.0 (2)
5.4 (4)
5.5 (2)
5.8 (8)
6 (1)
6.3 (1)
6.6 (3)
6.7 (9)
7.1 (4)

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Natural Gas (277)
Propane (172)

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100,000 (2)
120,000 (14)
130,000 (2)
140,000 (15)
157,000 (6)
160,000 (25)
165,000 (2)
170,000 (2)
175,000 (1)
180,000 (30)

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ABS (20)
Atmospheric (120)
Concentric (19)
Concentric Direct-Vent Termination (6)
CPVC (20)
Direct Exhaust (6)
Direct Vent (119)
Outdoor (No Venting) (29)
Polypropylene (20)
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Flow Rate At 70F Temp Rise (GPM)

2.8 (4)
3.2 (6)
3.3 (8)
3.5 (1)
3.6 (1)
3.8 (4)
4.2 (4)
4.3 (10)
4.4 (1)
4.5 (5)

Flow Rate At 60F Temp Rise (GPM)

3.3 (4)
3.7 (2)
3.8 (10)
3.9 (2)
4 (1)
4.2 (1)
4.4 (3)
4.9 (4)
5 (11)
5.2 (2)

Review Score

(134)
(22)
(3)
(4)
(4)

Price Range

$100 to $200 (1)
$300 to $400 (2)
$400 to $500 (2)
$500 to $600 (8)
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$700 to $800 (6)
$800 to $900 (10)
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$1000 to $1500 (132)
$1500 to $2000 (117)

Residential Gas Water Heaters

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Product Image of 199,000 BTU ATM-199M Adapt SC Standard Condensing Ultra-Low NOx Tankless Water Heater (NG)
$1,656.25 each
In Stock
Get 28 by Mon, Jun 22 - Wed, Jun 24
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Product Image of Series 200 Ultra Low-NOx Non-Condensing Indoor Tankless Water Heater (6.6 GPM, NG/LP)
$776.07 each
In Stock
Get 62 by Mon, Jun 22
In Stock
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Product Image of RX199IN 199,000 BTU, Condensing Indoor/Outdoor Tankless Water Heater (Natural Gas or Propane)
$1,532.79 each
In Stock
Get 25 by Mon, Jun 22
In Stock
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Product Image of Series 200 Ultra Low-NOx Non-Condensing Indoor Tankless Water Heater (8 GPM, NG/LP)
$624.40 each
In Stock
Get 11 by Mon, Jun 22
In Stock
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Product Image of 50 Gallon - 40,000 BTU Defender Safety System High Efficiency Residential Atmospheric Water Heater (Natural Gas)
$1,079.80 each
In Stock
Get 27 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of Series 200 Ultra Low-NOx Non-Condensing Indoor Tankless Water Heater (10 GPM, NG/LP)
$973.19 each
In Stock
Get 23 by Mon, Jun 22
In Stock
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Product Image of RXP199IN 199,000 BTU Condensing Indoor/Outdoor Tankless Water Heater w/ Pump & Thermal Bypass Valve (Natural Gas)
$1,861.02 each
In Stock
Get 16 by Mon, Jun 22
In Stock
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Product Image of NR98SV 199,900 BTU Indoor Single Vent Residential Tankless Water Heater (NG)
$1,565.64 each
In Stock
Get 18 by Mon, Jun 22
In Stock
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Product Image of 75 Gallon - 76,000 BTU High Input Atmospheric Vent Energy Saver Residential Water Heater (Nat Gas)
$1,655.27 each
In Stock
Get 7 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of Series 200 Ultra Low-NOx Non-Condensing Outdoor Tankless Water Heater (8 GPM, NG/LP)
$595.04 each
Out of Stock
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Out of Stock
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Product Image of RE199i 199,000 BTU, Non-Condensing Indoor Tankless Water Heater (Natural Gas)
$1,423.10 each
In Stock
Get 27 by Mon, Jun 22
In Stock
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Product Image of RE180i 180,000 BTU, Non-Condensing Indoor Tankless Water Heater (Propane)
$1,212.40 each
In Stock
Get 14 by Mon, Jun 22
In Stock
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Product Image of Series 200 Ultra Low-NOx Non-Condensing Outdoor Tankless Water Heater (6.6 GPM, NG/LP)
$793.87 each
In Stock
Get 15 by Mon, Jun 22
In Stock
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Product Image of 75 Gallon PCG-75 75,100 BTU ProLine High Recovery Residential Gas Water Heater, 10 Yr Warranty (NG)
$1,799.99 each
In Stock
Get 16 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of RE180i 180,000 BTU, Non-Condensing Indoor Tankless Water Heater (Natural Gas)
$1,212.40 each
In Stock
Get 46 by Mon, Jun 22
In Stock
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Product Image of 75 Gallon - 76,000 BTU TTW2 Power Vent Energy Saver Residential Water Heater (Nat Gas)
$2,708.81 each
In Stock
Get 7 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 40 Gallon - 40,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (Nat Gas)
$1,069.29 each
In Stock
Get 5 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of NR98SV 199,900 BTU Indoor Single Vent Residential Tankless Water Heater (LP)
$1,524.87 each
In Stock
Get 7 by Mon, Jun 22
In Stock
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Product Image of RE199i 199,000 BTU, Non-Condensing Indoor Tankless Water Heater (Propane)
$1,423.10 each
In Stock
Get 3 by Mon, Jun 22
In Stock
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Product Image of V53DEP 120,000 BTU High Efficiency Outdoor Tankless Heater (Propane)
$741.65 each
In Stock
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In Stock
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Product Image of RE199e 199,000 BTU, Non-Condensing Outdoor Tankless Water Heater (Natural Gas)
$1,423.10 each
In Stock
Get 11 by Mon, Jun 22
In Stock
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Product Image of 50 Gallon - 40,000 BTU TTW Power Vent Energy Saver Residential Water Heater (Nat Gas)
$2,098.04 each
In Stock
Get 12 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 50 Gallon GPVT-50 50,000 BTU ProLine XE Power Vent Residential Gas Water Heater - Tall (NG)
$1,921.07 each
In Stock
Get 4 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of RE160i 160,000 BTU, Non-Condensing Indoor Tankless Water Heater (Propane)
$992.60 each
In Stock
Get 11 by Mon, Jun 22
In Stock
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Product Image of 75 Gallon GPVX-75L 76,000 BTU ProLine Power Vent Residential Gas Water Heater w/ Side Connections - Tall (NG)
$2,599.99 each
In Stock
Get 12 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of RE140i 140,000 BTU, Non-Condensing Indoor Tankless Water Heater (Propane)
$884.10 each
In Stock
Get 14 by Mon, Jun 22
In Stock
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Product Image of  50 Gallon HDHE-50 100,000 BTU Vertex Ultra-Low NOx Power Direct Vent Residential Gas Water Heater - Tall (NG)
$4,536.63 each
In Stock
Get 11 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 40 Gallon - 40,000 BTU TTW Power Vent Energy Saver Residential Water Heater (Nat Gas)
$1,854.45 each
In Stock
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In Stock
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Product Image of NRC111DV 199,900 BTU Direct Vent Residential Tankless Water Heater (NG)
$1,930.40 each
In Stock
Get 11 by Mon, Jun 22
In Stock
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Product Image of NR98OD 199,900 BTU Outdoor Vent Residential Tankless Water Heater (NG)
$1,542.49 each
In Stock
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In Stock
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Product Image of RTGH Super High Efficiency 9.5 GPM Indoor Condensing Tankless Water Heater (Natural Gas), RTGH-95DVLN-3
$1,201.56 each
In Stock
Get 5 by Tue, Jun 23
In Stock
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Product Image of RX160IN 160,000 BTU, Condensing Indoor/Outdoor Tankless Water Heater (Natural Gas)
$1,298.43 each
In Stock
Get 10 by Mon, Jun 22
In Stock
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Product Image of RX130IN 130,000 BTU, Condensing Indoor/Outdoor Tankless Water Heater (Natural Gas)
$1,137.78 each
In Stock
Get 3 by Mon, Jun 22
In Stock
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Product Image of NRC98DV 180,000 BTU Direct Vent Residential Tankless Water Heater (NG)
$1,733.78 each
In Stock
Get 7 by Mon, Jun 22
In Stock
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Product Image of NR501 120,000 BTU Outdoor Residential Tankless Water Heater (LP)
$650.70 each
In Stock
Get 4 by Mon, Jun 22
In Stock
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Product Image of RE160i 160,000 BTU, Non-Condensing Indoor Tankless Water Heater (Natural Gas)
$992.60 each
In Stock
Get 7 by Mon, Jun 22
In Stock
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Product Image of RX180IN 180,000 BTU, Condensing Indoor/Outdoor Tankless Water Heater (Natural Gas)
$1,409.94 each
In Stock
Get 4 by Mon, Jun 22
In Stock
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Product Image of 40 Gallon - 34,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (Nat Gas)
$984.63 each
In Stock
Get 13 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 75 Gallon - 75,500 BTU TTW2 Power Vent Energy Saver Residential Water Heater (LP Gas)
$2,547.18 each
In Stock
Get 2 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of RE199e 199,000 BTU, Non-Condensing Outdoor Tankless Water Heater (Propane)
$1,423.10 each
In Stock
Get 3 by Mon, Jun 22
In Stock
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Product Image of 74 Gallon FCG-75 75,100 BTU ProLine High Recovery Residential  Gas Water Heater, 6 Yr Warranty - Short (NG)
$1,667.89 each
In Stock
Get 4 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 40 Gallon - 40,000 BTU Defender Safety System Atmospheric Vent Energy Saver Residential Water Heater (Nat Gas)
$1,062.36 each
In Stock
Get 4 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 50 Gallon GPVT-50 50,000 BTU ProLine XE Power Vent Residential Gas Water Heater - Tall (LP)
$1,925.21 each
In Stock
Get 3 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 50 Gallon GPVL-50 40,000 BTU ProLine Power Vent Residential Gas Water Heater - Short (NG)
$1,861.52 each
In Stock
Get 3 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 50 Gallon - 38,000 BTU TTW Power Vent Energy Saver Residential Water Heater (Propane)
$1,956.73 each
In Stock
Get 6 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of 50 Gallon XCG-50 40,000 BTU ProLine Residential Gas Water Heater, 10 Yr Warranty - Tall (NG)
$1,165.63 each
In Stock
Get 2 by Mon, Jun 22 - Wed, Jun 24
In Stock
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Product Image of NR501 120,000 BTU Outdoor Residential Tankless Water Heater (NG)
$744.34 each
In Stock
Get 2 by Mon, Jun 22
In Stock
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Product Image of NR98DVC 199,900 BTU Indoor Concentric Residential Tankless Water Heater (NG)
$1,649.09 each
In Stock
Get 10 by Mon, Jun 22
In Stock
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