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AO Smith (31)
Bosch (4)
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Eccotemp (6)
EZ Tankless (7)
Noritz (24)
Rheem (13)
Rinnai (24)
Takagi (14)

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Natural Gas (126)
Propane (25)

BTU (Max)
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70,000 (1)
80,000 (3)
84,000 (1)
100,000 (1)
120,000 (7)
130,000 (2)
140,000 (12)
157,000 (3)
160,000 (16)
165,000 (1)

Energy Factor
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0.80 - 0.85 (39)
0.85 - 0.90 (5)
0.90 - 0.95 (49)
0.95+ (46)

Vent Type
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Concentric (17)
Concentric Direct-Vent Termination (3)
Direct Exhaust (2)
Direct Vent (60)
Outdoor (No Venting) (19)
Power Direct Vent (6)
Power Vent (9)

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Indoor Only (67)
Indoor/Outdoor (20)
Outdoor Only (40)

Flow Rate At 40F Temp Rise (GPM)
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4.9 (1)
5.0 (1)
5.4 (2)
5.5 (1)
5.8 (5)
6 (1)
6.3 (1)
6.6 (2)
6.7 (1)
7.1 (2)

Flow Rate At 50F Temp Rise (GPM)
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3.9 (2)
4.4 (3)
4.5 (2)
4.6 (3)
4.8 (1)
5.1 (1)
5.3 (2)
5.8 (2)
6.1 (2)
6.2 (5)

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

Flow Rate At 70F Temp Rise (GPM)
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2.8 (2)
3.2 (3)
3.3 (5)
3.5 (1)
3.6 (1)
3.8 (3)
4.2 (2)
4.3 (1)
4.4 (1)
4.5 (4)

Review Score
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(35)
(9)
(1)
(2)

Price Range
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$40 to $45 (1)
$300 to $400 (1)
$400 to $500 (2)
$500 to $600 (4)
$600 to $700 (3)
$700 to $800 (6)
$800 to $900 (6)
$900 to $1000 (12)
$1000 to $1500 (29)
$1500 to $2000 (38)

Tankless Natural Gas Water Heaters

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Product Image of 190,000 BTU ATO-310 Non-Condensing Outdoor Tankless Water Heater (NG/LP)
190,000 BTU ATO-310 Non-Condensing Outdoor Tankless Water Heater (NG/LP)
SKU: ATO-310-U
AO Smith
SKU: ATO-310-U
Brand: AO Smith
$1,378.69 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of EZ Deluxe on Demand Tankless Water Heater, 1-2 Bath w/ Direct Vent Kit (NG)
EZ Deluxe on Demand Tankless Water Heater, 1-2 Bath w/ Direct Vent Kit (NG)
SKU: EZ-DELUXE-NG
EZ Tankless
SKU: EZ-DELUXE-NG
Brand: EZ Tankless
$578.95 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of Greentherm T-9800 SE 160 NG Tankless Water Heater (160000 BTU)
Greentherm T-9800 SE 160 NG Tankless Water Heater (160000 BTU)
SKU: 7736503725
Bosch
SKU: 7736503725
Brand: Bosch
$2,463.67 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of High Efficiency 9.5 GPM Indoor Tankless Water Heater w/ Recirculation Pump (NG), RTG-RC95DVLN-3
High Efficiency 9.5 GPM Indoor Tankless Water Heater w/ Recirculation Pump (NG), RTG-RC95DVLN-3
SKU: RTG-RC95DVLN-3
Rheem
SKU: RTG-RC95DVLN-3
Brand: Rheem
$2,195.96 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of High Efficiency 9.5 GPM Indoor Natural Gas EcoNet Included Tankless Water Heater, RTGH-95DVELN-3
High Efficiency 9.5 GPM Indoor Natural Gas EcoNet Included Tankless Water Heater, RTGH-95DVELN-3
SKU: RTGH-95DVELN-3
Rheem
SKU: RTGH-95DVELN-3
Brand: Rheem
$2,394.46 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of 180,000 BTU Ultra Low-NOx w/X3 Technology Natural Gas Outdoor Condensing Tankless Water Heater (8 GPM)
180,000 BTU Ultra Low-NOx w/X3 Technology Natural Gas Outdoor Condensing Tankless Water Heater (8 GPM)
SKU: TK-340X3-NEH
Takagi
SKU: TK-340X3-NEH
Brand: Takagi
$1,855.78 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of Sapphire Series 12L 80,000 BTU Tankless Water Heater (NG)
Sapphire Series 12L 80,000 BTU Tankless Water Heater (NG)
SKU: SAP12L-NG
EZ Tankless
SKU: SAP12L-NG
Brand: EZ Tankless
$537.38 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of 398,000 BTU Commercial Outdoor Tankless Rack System - Free Standing Back-To-Back (NG)
398,000 BTU Commercial Outdoor Tankless Rack System - Free Standing Back-To-Back (NG)
SKU: ACO-CRS-24B2B-N
AO Smith
SKU: ACO-CRS-24B2B-N
Brand: AO Smith
$8,856.96 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of ACI-CRS-23WM-N 398,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
ACI-CRS-23WM-N 398,000 BTU Commercial Indoor Tankless Rack System - Wall Mount (NG)
SKU: ACI-CRS-23WM-N
AO Smith
SKU: ACI-CRS-23WM-N
Brand: AO Smith
$6,489.72 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of RTG-199ME-N INFINITI Mid Efficiency Indoor Tankless Water Heater (7.3 GPM, NG)
RTG-199ME-N INFINITI Mid Efficiency Indoor Tankless Water Heater (7.3 GPM, NG)
SKU: RTG-199ME-N
Bradford White
SKU: RTG-199ME-N
Brand: Bradford White
$1,564.20 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of 199,000 BTU Ultra Low-NOx Natural Gas Indoor Condensing Tankless Water Heater (10 GPM)
199,000 BTU Ultra Low-NOx Natural Gas Indoor Condensing Tankless Water Heater (10 GPM)
SKU: TK-540P-NIH
Takagi
SKU: TK-540P-NIH
Brand: Takagi
(4)
$1,478.62 each
In Stock
Get 4 by Tue, Aug 25
In Stock
Get 4 by Tue, Aug 25
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Product Image of 120,000 BTU ATO-140H Condensing Ultra-Low NOx Outdoor Tankless Water Heater (NG)
120,000 BTU ATO-140H Condensing Ultra-Low NOx Outdoor Tankless Water Heater (NG)
SKU: ATO-140H-N
AO Smith
SKU: ATO-140H-N
Brand: AO Smith
$1,023.00 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of High Efficiency 9.5 GPM Indoor Propane Gas EcoNet Enabled Tankless Water Heater, RTGH-95DVELP-3
High Efficiency 9.5 GPM Indoor Propane Gas EcoNet Enabled Tankless Water Heater, RTGH-95DVELP-3
SKU: RTGH-95DVELP-3
Rheem
SKU: RTGH-95DVELP-3
Brand: Rheem
$1,785.00 each
Backorder
Get it by Tue, Sep 15 - Tue, Sep 22
Backorder
Get it by Tue, Sep 15 - Tue, Sep 22
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Product Image of EZTR40 120,000 BTU Indoor Direct Vent Condensing Tankless Water Heater Bundle Pack (NG)
EZTR40 120,000 BTU Indoor Direct Vent Condensing Tankless Water Heater Bundle Pack (NG)
SKU: EZTR40-NG
Noritz
SKU: EZTR40-NG
Brand: Noritz
$1,813.78 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of NR83DVC 180,000 BTU Concentric Vent Residential Tankless Water Heater (NG)
NR83DVC 180,000 BTU Concentric Vent Residential Tankless Water Heater (NG)
SKU: NR83DVC-NG
Noritz
SKU: NR83DVC-NG
Brand: Noritz
$1,554.05 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of EZ ULTRA HE Indoor Condensing Tankless Water Heater (NG)
EZ ULTRA HE Indoor Condensing Tankless Water Heater (NG)
SKU: EZ-ULTRA-NG
EZ Tankless
SKU: EZ-ULTRA-NG
Brand: EZ Tankless
$707.95 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of 597,000 BTU Commercial Outdoor Tankless Rack System - Wall Mount (NG)
597,000 BTU Commercial Outdoor Tankless Rack System - Wall Mount (NG)
SKU: ACO-CRS-33WM-N
AO Smith
SKU: ACO-CRS-33WM-N
Brand: AO Smith
$9,738.57 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of Sapphire Series 14L 100,000 BTU Tankless Water Heater (NG)
Sapphire Series 14L 100,000 BTU Tankless Water Heater (NG)
SKU: SAP14L-NG
EZ Tankless
SKU: SAP14L-NG
Brand: EZ Tankless
$597.10 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of Packaging for EZ98DV Tankless Water Heaters
Packaging for EZ98DV Tankless Water Heaters
SKU: FDAN101
Noritz
SKU: FDAN101
Brand: Noritz
$43.01 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of NRC711 157,000 BTU Direct Vent Condensing Residential Tankless Water Heater (NG)
NRC711 157,000 BTU Direct Vent Condensing Residential Tankless Water Heater (NG)
SKU: NRC711-DV-NG
Noritz
SKU: NRC711-DV-NG
Brand: Noritz
$1,476.13 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of RTG-199HE-N INFINITI High Efficiency Indoor Tankless Condensing Water Heater (8.3 GPM, NG)
RTG-199HE-N INFINITI High Efficiency Indoor Tankless Condensing Water Heater (8.3 GPM, NG)
SKU: RTG-199HE-N
Bradford White
SKU: RTG-199HE-N
Brand: Bradford White
$1,822.50 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of CHS16080HCXiN H-Series 160,000 BTU, Demand Duo Commercial Condensing Indoor Hybrid Tankless Water Heater (Natural Gas)
CHS16080HCXiN H-Series 160,000 BTU, Demand Duo Commercial Condensing Indoor Hybrid Tankless Water Heater (Natural Gas)
SKU: CHS16080HCXIN
Rinnai
SKU: CHS16080HCXIN
Brand: Rinnai
$8,362.50 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of NR662 140,000 BTU Outdoor Residential Tankless Water Heater (NG)
NR662 140,000 BTU Outdoor Residential Tankless Water Heater (NG)
SKU: NR662-OD-NG
Noritz
SKU: NR662-OD-NG
Brand: Noritz
(1)
$899.56 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of Sapphire Series 24L 170,000 BTU Tankless Water Heater (NG)
Sapphire Series 24L 170,000 BTU Tankless Water Heater (NG)
SKU: SAP24L-NG
EZ Tankless
SKU: SAP24L-NG
Brand: EZ Tankless
$850.29 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of ACO-CRS-26IL-N 398,000 BTU Commercial Outdoor Tankless Rack System - Free-Standing In-Line (NG)
ACO-CRS-26IL-N 398,000 BTU Commercial Outdoor Tankless Rack System - Free-Standing In-Line (NG)
SKU: ACO-CRS-26IL-N
AO Smith
SKU: ACO-CRS-26IL-N
Brand: AO Smith
$8,856.96 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of NHH Hybrid Hot 199,000 BTU Indoor Direct Vent Commercial Tankless Hybrid Water Heater (NG)
NHH Hybrid Hot 199,000 BTU Indoor Direct Vent Commercial Tankless Hybrid Water Heater (NG)
SKU: NHH199100-1-NG
Noritz
SKU: NHH199100-1-NG
Brand: Noritz
$10,173.36 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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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
IKONIC High-Efficiency 10.0 GPM Indoor Condensing Tankless Natural Gas Water Heater with Recirculation Pump, RTGH-SR10I
SKU: RTGH-SR10I
Rheem
SKU: RTGH-SR10I
Brand: Rheem
$1,915.55 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of ACO-CRS-24IL-N 398,000 BTU Commercial Outdoor Tankless Rack System - Free-Standing In-Line (NG)
ACO-CRS-24IL-N 398,000 BTU Commercial Outdoor Tankless Rack System - Free-Standing In-Line (NG)
SKU: ACO-CRS-24IL-N
AO Smith
SKU: ACO-CRS-24IL-N
Brand: AO Smith
$8,856.96 each
Backorder
Get it by Wed, Sep 23 - Fri, Oct 23
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Get it by Wed, Sep 23 - Fri, Oct 23
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Product Image of RTG-K-160-N2 INFINITI K Outdoor Tankless Condensing Water Heater, 7 GPM (Natural Gas)
RTG-K-160-N2 INFINITI K Outdoor Tankless Condensing Water Heater, 7 GPM (Natural Gas)
SKU: RTG-K-160-N2
Bradford White
SKU: RTG-K-160-N2
Brand: Bradford White
$1,758.45 each
In Stock
Get 2 by Tue, Aug 25 - Thu, Aug 27
In Stock
Get 2 by Tue, Aug 25 - Thu, Aug 27
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Product Image of SmartHome 140,000 BTU Outdoor Tankless Water Heater w/ Voice Commands (6.8 GPM, NG)
SmartHome 140,000 BTU Outdoor Tankless Water Heater w/ Voice Commands (6.8 GPM, NG)
SKU: SH22-NG
Eccotemp
SKU: SH22-NG
Brand: Eccotemp
$699.00 each
In Stock
Get 280 by Wed, Aug 26 - Thu, Aug 27
In Stock
Get 280 by Wed, Aug 26 - Thu, Aug 27
Compare
Product Image of NRC661 120,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (NG)
NRC661 120,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (NG)
SKU: NRC661-OD-NG
Noritz
SKU: NRC661-OD-NG
Brand: Noritz
(1)
$1,052.69 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of T-H3J-OS-N Outdoor Tankless High Efficiency Condensing Water Heater (NG)
T-H3J-OS-N Outdoor Tankless High Efficiency Condensing Water Heater (NG)
SKU: T-H3J-OS-N
Takagi
SKU: T-H3J-OS-N
Brand: Takagi
(1)
$1,040.87 each
In Stock
Get 5 by Tue, Aug 25
In Stock
Get 5 by Tue, Aug 25
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Product Image of Builder Series Outdoor Tankless Water Heater (7 GPM, NG)
Builder Series Outdoor Tankless Water Heater (7 GPM, NG)
SKU: 7GB-NG
Eccotemp
SKU: 7GB-NG
Brand: Eccotemp
$699.00 each
In Stock
Get 100 by Wed, Aug 26 - Thu, Aug 27
In Stock
Get 100 by Wed, Aug 26 - Thu, Aug 27
Compare
Product Image of 190,000 BTU ATI-310C Non-Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG)
190,000 BTU ATI-310C Non-Condensing Ultra-Low NOx Indoor Tankless Water Heater (NG)
SKU: ATI-310C-N
AO Smith
SKU: ATI-310C-N
Brand: AO Smith
(1)
$1,171.69 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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Get it by Tue, Sep 22 - Tue, Oct 20
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Product Image of NRC711 157,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (NG)
NRC711 157,000 BTU Outdoor Vent Condensing Residential Tankless Water Heater (NG)
SKU: NRC711-OD-NG
Noritz
SKU: NRC711-OD-NG
Brand: Noritz
$1,295.62 each
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
Backorder
Get it by Tue, Sep 22 - Tue, Oct 20
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