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AO Smith (68)
Bosch (16)
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Noritz (47)

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Tankless Heater (191)
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Electric (164)
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0.85 - 0.90 (10)
0.90 - 0.95 (118)
0.95+ (97)

Energy Star Rated

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Yes (95)

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120v (137)
208V (55)
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480V (12)

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BTU (Min)

9,000 (17)
10,300 (1)
10,400 (18)
11,000 (19)
12,000 (4)
12,500 (2)
13,000 (18)
15,000 (68)
15,500 (1)
16,500 (4)

BTU (Max)

42,500 (1)
70,000 (2)
80,000 (4)
84,000 (2)
100,000 (2)
120,000 (14)
130,000 (2)
140,000 (15)
147,000 (1)
157,000 (6)

Flow Rate At 40F Temp Rise (GPM)

0.3 (2)
0.35 (2)
0.5 (17)
0.6 (1)
1 (9)
1.4 (1)
1.5 (2)
1.9 (1)
2 (4)
2.2 (1)

Flow Rate At 50F Temp Rise (GPM)

0.2 (1)
0.3 (2)
0.4 (7)
0.5 (4)
0.6 (5)
0.7 (3)
0.8 (3)
0.9 (1)
1 (1)
1.1 (6)

Flow Rate At 60F Temp Rise (GPM)

0.2 (2)
0.3 (8)
0.4 (4)
0.5 (8)
0.6 (1)
0.7 (3)
0.9 (7)
1 (2)
1.1 (3)
1.3 (2)

Flow Rate At 70F Temp Rise (GPM)

0.2 (2)
0.3 (10)
0.4 (4)
0.5 (4)
0.6 (2)
0.7 (1)
0.8 (6)
0.9 (3)
1 (1)
1.1 (2)

Phase

1 (77)
3 (10)

Review Score

(94)
(27)
(7)
(5)
(5)

Price Range

$100 to $200 (12)
$200 to $300 (74)
$300 to $400 (37)
$400 to $500 (8)
$500 to $600 (17)
$600 to $700 (22)
$700 to $800 (15)
$800 to $900 (17)
$3000 to $3500 (3)
$900 to $1000 (12)

Tankless Water Heaters

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Product Image of 180,000 BTU ATHR-180X3 Adapt Premium Condensing Ultra-Low NOx Tankless Water Heater w/ Integrated X3 Scale Prevention Technology (Natural Gas)
$2,068.57 each
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Product Image of 199,000 BTU ACT-199I Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG)
$2,246.71 each
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Product Image of RTG-K-160-N1 INFINITI K Indoor Tankless Condensing Water Heater, 7 GPM (Natural Gas)
RTG-K-160-N1 INFINITI K Indoor Tankless Condensing Water Heater, 7 GPM (Natural Gas)
SKU: RTG-K-160-N1
Bradford White
SKU: RTG-K-160-N1
$1,758.45 each
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Product Image of Mini 4-2, Point-of-Use, Tankless Electric Water Heater
$219.00 each
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Product Image of LT Series 199,000 BTU Ultra Low NOx Tankless Residential Water Heater with Recirculation Pump (Natural Gas)
$1,693.62 each
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Product Image of NR98DVC 199,900 BTU Indoor Concentric Residential Tankless Water Heater (LP)
$1,693.54 each
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Product Image of NRC98DV 180,000 BTU Direct Vent Residential Tankless Water Heater (LP)
$1,731.54 each
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Product Image of EX240T3 Three Phase Electric Tankless Commercial Water Heater
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1-888-757-4774
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Product Image of 120,000 BTU ATO-140H Condensing Ultra-Low NOx Outdoor Tankless Water Heater (LP)
$918.60 each
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Product Image of Tempra 29 Trend, Whole House, Tankless Electric Water Heater
$699.00 each
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Product Image of 160,000 BTU ATM-160X3 Adapt SC Standard Condensing Ultra-Low NOx Tankless Water Heater with X3 Scale Prevention Technology (NG)
$1,668.75 each
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Product Image of 199,000 BTU ATI-540P Condensing Ultra-Low NOx Indoor Tankless Water Heater w/ Integrated Recirc. Pump (NG)
$1,813.08 each
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Product Image of DHC 8-2 Classic, Point-of-Use, Tankless Electric Water Heater
$269.00 each
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Product Image of EX144TC Series Two Commercial Electric Tankless Water Heater
$708.09 each
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Product Image of NR662 140,000 BTU Outdoor Residential Tankless Water Heater (LP)
$899.56 each
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Product Image of DHC 5-2 Classic, Point-of-Use, Tankless Electric Water Heater
$269.00 each
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Product Image of DHC-E 12/15-2 Trend Tankless Electric Water Heater
$339.00 each
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Product Image of REP199IN 199,000 BTU Non-Condensing Indoor Tankless Water Heater (Natural Gas)
$1,430.55 each
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Product Image of Tempra 24 Trend, Whole House, Tankless Electric Water Heater
$669.00 each
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Product Image of EZ 202 Portable Tankless Water Heater (NG)
$354.00 each
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Product Image of DHC-E 8/10-2 Trend Tankless Electric Water Heater
$299.00 each
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Product Image of 199,000 BTU ATO-510 Non-Condensing Ultra-Low NOx Outdoor Tankless Water Heater (NG/LP)
$1,589.49 each
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Product Image of Non-Thermostatic FlowCo Electric Tankless Water Heater (1.8 kW, 120V)
$192.56 each
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Product Image of SmartHome Adjustable Electric Tankless Water Heater (4.5 GPM, 27kW, 240V)
$449.00 each
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Product Image of 199,000 BTU ATO-540P Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ Integrated Recirc. Pump (NG)
$1,657.64 each
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Product Image of EZTR50 180,000 BTU Multi Vent Condensing Tankless Water Heater Bundle Pack (NG)
$2,387.81 each
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Product Image of 199,000 BTU ATI-510C Non-Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG)
$1,366.33 each
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Product Image of NRC661 120,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (LP)
$1,199.26 each
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Product Image of Mini-E 4-2, Point-of-Use, Tankless Electric Water Heater
$269.00 each
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Product Image of SmartHome 140,000 BTU Outdoor Tankless Water Heater w/ Voice Commands (6.8 GPM, NG)
$699.00 each
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Product Image of Greentherm T 9900i SE 199 NG/LP Tankless Water Heater
$3,134.11 each
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Product Image of Thermostatic Electric Tankless Water Heater for Sanitation (9.5kW, 240V)
$377.18 each
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Product Image of LT Series 199,000 BTU Ultra Low NOx Tankless Residential Water Heater with Recirculation Pump (Propane)
$1,777.45 each
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Product Image of DHC 3-2 Classic, Point-of-Use, Tankless Electric Water Heater
$269.00 each
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Product Image of EZ Deluxe on Demand Tankless Water Heater, 1-2 Bath w/ Direct Vent Kit (LP)
$578.95 each
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Product Image of NRC711 157,000 BTU Direct Vent Condensing Residential Tankless Water Heater (LP)
$1,489.95 each
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Product Image of NC199OD 199,900 BTU Outdoor Commercial Tankless Water Heater (LP)
$1,751.95 each
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Product Image of Mini 3.5-1, Point-of-Use, Tankless Electric Water Heater
$219.00 each
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Product Image of SmartHome 140,000 BTU Indoor Tankless Water Heater w/ Voice Commands (6.8 GPM, NG)
$699.00 each
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Product Image of XTP018208 ProSeries XTP Commercial Thermostatic Electric Tankless Water Heater (18 kW, 208V)
$2,902.03 each
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Product Image of RTG-K-199-N2 INFINITI K Outdoor Tankless Condensing Water Heater, 8.7 GPM (Natural Gas)
$2,062.95 each
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Product Image of 160,000 BTU ATI-240HX3 Condensing Ultra-Low NOx Indoor Tankless Water Heater w/ X3 Scale Prevention (LP)
$1,683.13 each
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Product Image of Stiebel Eltron Tempra 12 Trend, Whole House, Tankless Electric Water Heater
$459.00 each
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Product Image of 7 kW Indoor Tankless Electric Water Heater Booster, RTEX-AB
$518.43 each
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Product Image of Electric Tankless Water Heater w/ Thermostatic Limit Tepid Water Setting (8.3 kW, 208 V)
$399.95 each
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Product Image of Thermostatic Electric Tankless Water Heater (3.0kW, 120 V)
$317.05 each
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Product Image of EX1608TC ML Series Two Commercial Electric Tankless Water Heater w/ Multi Lav Function
$700.51 each
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Product Image of XTP032208 ProSeries XTP Commercial Thermostatic Electric Tankless Water Heater (31.2 kW, 208V)
$4,289.25 each
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Resources
FAQs, Manuals & Videos
Videos
FAQs
What is the first thing I should look at when purchasing a tankless water heater?
Before considering which tankless water heater to purchase, it is important to verify the type of fuel source you will be using. Tankless water heaters come in electric, natural gas, and liquid propane versions. Select the fuel source for the water heater that corresponds to the fuel source that you have. Natural gas is commonly written as NG, while propane is written as LP.
How do I know which size tankless water heater to buy?
Tankless heaters are sized based on the gallons per minute (GPM) they are able to produce. Each tankless heater has a GPM rating associated with it. The best way to size a heater is to determine the maximum flow rate that you'll have at any time. You can assume that each shower requires 2.5 GPM. You may also need to consider any appliances that use a lot of water such as certain types of dishwashers or washing machines. The chart on this help section labeled Tankless Heater Selection will give you a better idea of which heater you need.
Do I really save money with a tankless heater?
Tankless heaters use less energy than traditional tank style heaters. Traditional tank type heaters sit with 40 or 50 gallons of hot water in them all day, this is known as stand-by loss. They are wasting energy keeping this water hot until someone needs it. Tankless water heaters produce hot water only when it is needed. By using less energy tankless heaters will save you a significant amount of money in the long run.
Is there a rebate available for tankless water heaters?
Many of the tankless water heaters qualify for the 2009 energy efficiency tax rebate. The rebate pays back 30% of the cost of the item plus installation costs with a maximum rebate of $1500. The heaters need to have and EF rating of .82 or higher, or a thermal efficiency of .90 or higher. Most of the units we carry qualify for this tax rebate.