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AO Smith (68)
Bosch (16)
Bradford White (11)
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Eccotemp (10)
Eemax (95)
EZ Tankless (16)
Laars (4)
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Noritz (47)

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Control (5)
Kit (1)
Mixing Valve (1)
Tankless Heater (191)
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Thermostat (1)
Water Heater Booster (1)

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Electric (164)
Natural Gas (141)
Propane (102)

Energy Factor

0.75 - 0.80 (1)
0.80 - 0.85 (56)
0.85 - 0.90 (10)
0.90 - 0.95 (118)
0.95+ (97)

Energy Star Rated

No (36)
Yes (95)

Voltage

110v (3)
120v (137)
208V (55)
240v (84)
277v (22)
480V (12)

Vent Type

Concentric (22)
Concentric Direct-Vent Termination (6)
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Direct Vent (103)
Outdoor (No Venting) (29)
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Outdoor Only (70)
Under Sink (37)

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 EX190TCML Twin Heating Module Electric Tankless Water Heater
$707.38 each
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Get 2 by Thu, Jul 23
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Product Image of XTP024208 ProSeries XTP Commercial Thermostatic Electric Tankless Water Heater (24 kW, 208V)
$3,712.49 each
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Product Image of ACI-CRS-22WM-N 398,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
$5,352.02 each
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Product Image of EZ ULTRA HE Indoor Condensing Tankless Water Heater (NG)
$707.95 each
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Product Image of 199,000 BTU ATI-540HX3 Condensing Ultra-Low NOx Indoor Tankless Water Heater w/ X3 Scale Prevention (LP)
$1,903.49 each
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Product Image of DHC 6-3 Classic, Point-of-Use, Tankless Electric Water Heater
$269.00 each
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Product Image of Accumix II Electric Tankless Water Heater
Accumix II Electric Tankless Water Heater
SKU: AM010240T
Eemax
SKU: AM010240T
Brand: Eemax
$661.34 each
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Product Image of NHH Hybrid Hot 199,000 BTU Indoor Direct Vent Commercial Tankless Hybrid Water Heater (NG)
$8,473.00 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 DHC 3/3.5-1 Trend Tankless Electric Water Heater
DHC 3/3.5-1 Trend Tankless Electric Water Heater
SKU: 200060
Stiebel Eltron
SKU: 200060
$269.00 each
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Product Image of EX144T2 Series Two Commercial Electric Tankless Water Heater
$813.41 each
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Product Image of EZ98DV 180,000 BTU Indoor/Outdoor Residential Tankless Water Heater (LP)
$1,638.79 each
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Product Image of ED020480T3 Three Phase Triple Module Electric Tankless Commercial Water Heater for Sanitation
$1,812.49 each
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1-888-757-4774
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Product Image of ProAdvantage Thermostatic Tankless Water Heater 11.5kW (240V)
$651.01 each
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Product Image of T-H3-OS-N Outdoor Tankless High Efficiency Condensing Water Heater (NG)
$1,171.63 each
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Product Image of EZTR75 199,000 BTU Multi Vent Condensing Tankless Water Heater Bundle Pack (LP)
$2,949.42 each
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Product Image of Thermostatic Multi Lav Electric Tankless Water Heater (Sanitation Temp. up to 180°) (4.1kW, 208 V)
$362.77 each
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Product Image of Greentherm T-9800 SE 160 NG Tankless Water Heater (160000 BTU)
$2,463.67 each
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Product Image of SPEX2412 FlowCo Electric Tankless Water Heater with Eye Wash (2.4kW, 120 V)
$340.55 each
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Product Image of 199,000 BTU Ultra Low-NOx Natural Gas Outdoor Condensing Tankless Water Heater (10 GPM)
$1,452.83 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)
$1,819.28 each
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Product Image of High Efficiency 9.5 GPM Indoor Propane Gas EcoNet Enabled Tankless Water Heater, RTGH-95DVELP-3
$1,785.00 each
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Product Image of LavAdvantage Thermostatic Electric Tankless Water Heater (4.1 kW, 277V)
$257.31 each
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Product Image of EX280T2T-S Series Three Electric Tankless Commercial Water Heater (Sanitation Model)
$1,111.14 each
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Product Image of SPEX90 FlowCo Electric Tankless Water Heater (9.0kW, 277 V)
$358.42 each
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Product Image of Digital Self-Modulating Residential Tankless Electric Water Heater (36kW/240V)
$649.99 each
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Product Image of XTP024480 ProSeries XTP Commercial Thermostatic Electric Tankless Water Heater (24 kW, 480V)
$3,535.16 each
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Product Image of ACI-CRS-23WM-N 398,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
$5,926.53 each
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Product Image of T-H3S-OS-N Outdoor Tankless High Efficiency Condensing Water Heater (NG)
$942.96 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 C2VA-140X Point-of-Use 2-Chamber Commercial Electric Tankless Water Heater
$540.89 each
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Product Image of Digital Self-Modulating Residential Tankless Electric Water Heater (18kW/240V)
$399.99 each
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Product Image of Sapphire Series 12L 80,000 BTU Tankless Water Heater (LP)
$537.38 each
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Product Image of DHC 4-2 Classic, Point-of-Use, Tankless Electric Water Heater
$269.00 each
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Product Image of LavAdvantage Thermostatic Electric Tankless Water Heater (3.5 kW, 240V)
$367.70 each
In Stock
Get 2 by Thu, Jul 23
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Product Image of ACI-CRS-24IL-N 398,000 BTU Commercial Indoor Tankless Rack System - Free-Standing In-Line (NG)
$8,079.46 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 199,000 BTU ATO-540HX3 Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (LP)
$1,961.45 each
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Product Image of NRC98OD 180,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (LP)
$1,780.95 each
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Product Image of EZ Deluxe on Demand Tankless Water Heater, 1-2 Bath w/ Direct Vent Kit (NG)
$578.95 each
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Product Image of 180,000 BTU ATO-340HX3 Condensing Ultra-Low NOx Outdoor Tankless Water Heater w/ X3 Scale Prevention (LP)
$1,819.28 each
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Product Image of NRC711 157,000 BTU Direct Vent Condensing Residential Tankless Water Heater (NG)
$1,476.13 each
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Product Image of ACO-CRS-22WM-N 398,000 BTU Commercial Outdoor Tankless Rack System - Wall Mount (NG)
$5,352.02 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 EZ98DV 180,000 BTU Indoor/Outdoor Residential Tankless Water Heater (NG)
$1,753.08 each
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Product Image of 160,000 BTU Tankless High Efficiency Residential Condensing Water Heater - Indoor (LP)
$2,135.56 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 RTGH Super High Efficiency 9.0 GPM Indoor Condensing Tankless Water Heater (Propane), RTGH-90DVLP-3
RTGH Super High Efficiency 9.0 GPM Indoor Condensing Tankless Water Heater (Propane), RTGH-90DVLP-3
SKU: RTGH-90DVLP-3
Rheem
SKU: RTGH-90DVLP-3
Brand: Rheem
$1,345.79 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.