JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

Toggle Nav

Search

We ship to most places in continental USA

Chat with us

Need help

Our Locations

Home
HVAC
Tankless Water Heaters

Tankless Water Heaters

AO Smith

Natural Gas
In Stock
Retail : $2,170.00 $1,736.00

You Save (20%)

Qty:
Eemax LavAdvantage™ Series Tankless Water Heater
Retail : $433.90 $346.58

You Save (20%)
Eemax SPEX012240T LavAdvantage™ 11.5 Kilowatt, 240 Voltage Thermostatic Electric Tankless Water Heater
547.50437.31
11.5 KW
240 V, SPEX012240T

Eemax SPEX3208T LavAdvantage™ 3 Kilowatt, 208 Voltage Thermostatic Electric Tankless Water Heater
433.90346.58
3 KW
208 V, SPEX3208T

Eemax SPEX4208T LavAdvantage™ 4.1 Kilowatt, 208 Voltage Thermostatic Electric Tankless Water Heater
433.90346.58
4.1 KW
208 V, SPEX4208T

Eemax SPEX75T LavAdvantage™ 7.5 Kilowatt, 240 Voltage Thermostatic Electric Tankless Water Heater
429.76343.28
7.5 KW
240 V, SPEX75T

Eemax SPEX80T LavAdvantage™ 8 Kilowatt, 277 Voltage Thermostatic Electric Tankless Water Heater
433.90346.58
8 KW
277 V, SPEX80T
In Stock

Eemax SPEX8208T LavAdvantage™ 8.3 Kilowatt, 208 Voltage Thermostatic Electric Tankless Water Heater
433.90346.58
8.3 KW
208 V, SPEX8208T

Eemax SPEX90T LavAdvantage™ 9 Kilowatt, 277 Voltage Thermostatic Electric Tankless Water Heater
433.90346.58
9 KW
277 V, SPEX90T

Eemax SPEX90T LavAdvantage™ 9.5 Kilowatt, 240 Voltage Thermostatic Electric Tankless Water Heater
433.90346.58
9.5 KW
240 V, SPEX90T
Qty:
Eemax LavAdvantage™ Series Tankless Water Heater for Multi-Lavatory
Retail : $489.76 $391.20

You Save (20%)
Eemax SPEX55T ML LavAdvantage™ 5.5 Kilowatt, 240 Voltage Thermostatic Electric Tankless Water Heater for Multi-Lavatory
489.76391.20
5.5 KW
240 V, SPEX55T ML
In Stock

Eemax SPEX90T ML LavAdvantage™ 9 Kilowatt, 277 Voltage Thermostatic Electric Tankless Water Heater for Multi-Lavatory
494.46394.95
9 KW
277 V, SPEX90T ML
In Stock
Qty:
Eemax FlowCo™ Series Tankless Water Heater
Retail : $331.20 $264.55

You Save (20%)
Eemax SPEX3012 FlowCo™ 3 Kilowatt, 120 Voltage Non-Thermostatic Electric Tankless Water Heater
331.20264.55
3 KW
120 V, SPEX3012
In Stock

Eemax SPEX3208 FlowCo™ 3 Kilowatt, 208 Voltage Non-Thermostatic Electric Tankless Water Heater
331.20264.55
3 KW
208 V, SPEX3208
In Stock

Eemax SPEX3512 FlowCo™ 3.5 Kilowatt, 120 Voltage Non-Thermostatic Electric Tankless Water Heater
331.20264.55
3.5 KW
120 V, SPEX3512
In Stock

Eemax SPEX4208 FlowCo™ 4.1 Kilowatt, 208 Voltage Non-Thermostatic Electric Tankless Water Heater
331.20264.55
4.1 KW
208 V, SPEX4208
In Stock

Eemax SPEX4277 FlowCo™ 4.1 Kilowatt, 277 Voltage Non-Thermostatic Electric Tankless Water Heater
337.34269.45
4.1 KW
277 V, SPEX4277

Eemax SPEX55 FlowCo™ 5.5 Kilowatt, 240 Voltage Non-Thermostatic Electric Tankless Water Heater
331.20264.55
5.5 KW
240 V, SPEX55

Eemax SPEX8208 FlowCo™ 8.3 Kilowatt, 208 Voltage Non-Thermostatic Electric Tankless Water Heater
337.34269.45
8.3 KW
208 V, SPEX8208
In Stock
Qty:
AO Smith ATHR-M Tankless Water Heater

Natural Gas
Retail : $2,130.00 $1,704.00

You Save (20%)
AO Smith 100374797 Adapt™ 160 Input MBtu Premium Condensing Ultra-Low NOx Natural Gas Tankless Water Heater
2130.001704.00
160 MBtu
100374797
In Stock

AO Smith 100374798 Adapt™ 180 Input MBtu Premium Condensing Ultra-Low NOx Natural Gas Tankless Water Heater
2390.001912.00
180 MBtu
100374798
In Stock

AO Smith 100374799 Adapt™ 199 Input MBtu Premium Condensing Ultra-Low NOx Natural Gas Tankless Water Heater
2660.002128.00
199 MBtu
100374799
In Stock
Qty:
AO Smith ATHR-X Tankless Water Heater with X3® Scale Prevention Technology

Natural Gas
Retail : $2,340.00 $1,872.00

You Save (20%)
AO Smith 100374800 Adapt™ 160 Input MBtu Premium Condensing Ultra-Low NOx Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
2340.001872.00
160 MBtu
100374800
In Stock

AO Smith 100374811 Adapt™ 180 Input MBtu Premium Condensing Ultra-Low NOx Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
2600.002080.00
180 MBtu
100374811
In Stock

AO Smith 100374812 Adapt™ 199 Input MBtu Premium Condensing Ultra-Low NOx Natural Gas Tankless Water Heater with X3® Scale Prevention Technology
2870.002296.00
199 MBtu
100374812
In Stock
Qty:
AO Smith R4MA 2-Chamber Electric Tankless Water Heater

Electric
In Stock
Retail : $597.48 $477.98

You Save (20%)

Qty:
AO Smith R4MA 4-Chamber Electric Tankless Water Heater

Electric
Retail : $633.04 $506.43

You Save (20%)
AO Smith R4LA-180E 18 Kilowatt 240 Volt 4-Chamber Residential Electric Tankless Water Heater
633.04506.43
18 KW
100293891
In Stock

AO Smith R4LA-240E 24 Kilowatt 240 Volt 4-Chamber Residential Electric Tankless Water Heater
773.14618.51
24 KW
100294820

AO Smith R4LA-280E 28 Kilowatt 240 Volt 4-Chamber Residential Electric Tankless Water Heater
999.84799.87
28 KW
R4LA-280E
In Stock

AO Smith R4MA-320E 32 Kilowatt 240 Volt 4-Chamber Residential Electric Tankless Water Heater
1068.36854.69
32 KW
100294797
In Stock
Qty:
Bosch Tronic 6100 C Series Electric Tankless Water Heater

Electric
Retail : $1,571.00 $724.07

You Save (54%)
Bosch 7738007421 Tronic 6100 C Series 27 KW 240 Voltage Electric Tankless Water Heater
1571.00724.07
27 KW
In Stock
Qty:
Laars LT Series Water Heater

Natural Gas

Energy Star
Retail : $1,954.00 $1,465.50

You Save (25%)
Laars LT199NXX-1 LT Series 199 Input MBtu Tankless Condensing Natural Gas Water Heaters
1860.001395.00
199 MBtu
LT199NXX-1
In Stock
Qty:
Laars LT Series Water Heater with Pump

Natural Gas

With Pump

Energy Star
Retail : $2,332.00 $1,749.00

You Save (25%)
Laars LT199NRX1 LT Series 199 Input MBtu Tankless Condensing Natural Gas Water Heaters with Recirculation Pump
2220.001665.00
199 MBtu
LT199NRX1
In Stock
Qty:
AO Smith ProLine ATI

Natural Gas

Non-Condensing Water Heaters
Retail : $892.00 $713.60

You Save (20%)
AO Smith ATI-110U-N ProLine® XE 140,000 BTU Residential/Commercial Ultra Low-NOx Non-Condensing Natural Gas Indoor Tankless Water Heater
892.00713.60
140 MBtu
ATI-110U-N
In Stock

AO Smith ATI-310U-N ProLine® XE 190,000 BTU Residential/Commercial Ultra Low-NOx Non-Condensing Natural Gas Indoor Tankless Water Heater
892.00713.60
190 MBtu
ATI-310U-N
In Stock

AO Smith ATI-510U-N ProLine® XE 199,000 BTU Residential/Commercial Ultra Low-NOx Non-Condensing Natural Gas Indoor Tankless Water Heater
1042.00833.60
199 MBtu
ATI-510U-N
In Stock
Qty:
AO Smith ProLine Series Electric Water Heaters

Electric

Residential Water Heaters

5 Year Limited Warranty
In Stock
Retail : $597.20 $358.32

You Save (40%)

Qty:
DHT External Tankless Water Heater
Retail : $2,099.00 $2,015.04

You Save (4%)
DHT #6 DELUXE, 6 Gallon Everhot External Tankless Water Heater
1378.001322.88
6 Gallons
#6 DELUXE
In Stock

DHT #8 DELUXE, 8 Gallon Everhot External Tankless Water Heater
1547.001485.12
8 Gallons
#8 DELUXE
In Stock

DHT #10 DELUXE, 10 Gallon Everhot External Tankless Water Heater
1962.001883.52
10 Gallons
#10 DELUXE
In Stock

DHT #12 DELUXE, 12 Gallon Everhot External Tankless Water Heater
2270.002179.20
12 Gallons
#12 DELUXE
In Stock
Qty:
AO Smith ATO P - Tankless Water Heaters (NG)

Gas, Water

Stainless Steel Heat Exchanger

Power Direct Vent
Retail : $1,540.00 $1,232.00

You Save (20%)
AO Smith ATO-540P-N Tankless Natural Gas Water Heater, 199,000 BTU, Power Direct Vent, 15 Yr Heat Exchanger/5 Parts Warranty
2808.002246.40
199 MBtu
ATO-540P-N
In Stock
Qty:
AO Smith ATO U - Tankless Water Heaters (NG)

Gas, Water

Stainless Steel Heat Exchanger

Power Direct Vent
Retail : $850.00 $680.00

You Save (20%)
AO Smith ATO-110U Tankless Natural Gas Water Heater, 140,000 BTU, Power Direct Vent, 15 Yr Heat Exchanger/5 Parts Warranty
850.00680.00
140 MBtu
ATO-110U
In Stock

AO Smith ATO-310U-N Tankless Natural Gas Water Heater, 190,000 BTU, Power Direct Vent, 15 Yr Heat Exchanger/5 Parts Warranty
814.00488.40
190 MBtu
ATO-310U-N

AO Smith ATO-510U Tankless Natural Gas Water Heater, 199,000 BTU, Power Direct Vent, 15 Yr Heat Exchanger/5 Parts Warranty
2156.001293.60
199 MBtu
ATO-510U
Qty:
AO Smith ATI H - Tankless Water Heater (NG)

Gas, Water

Stainless Steel Heat Exchanger

Power Direct Vent
Retail : $1,580.00 $1,264.00

You Save (20%)
AO Smith ATI-140H-N Tankless Natural Gas Water Heater, 140,000 BTU, Power Direct Vent, 15 Yr Heat Exchanger/5 Parts Warranty
1580.001264.00
140 MBtu
ATI-140H-N
In Stock
Qty:
IBC Tankless Water Heaters STC Series

Gas, Water

Painted Steel Heat Exchanger

Direct Vent

95% Efficiency
Retail : $2,303.00 $1,461.25

You Save (37%)
IBC Technologies SFT199 Tankless Water Heater 199 Input MBH, 95% AFUE, Direct Vent, Natural Gas
2303.001461.25
199 MBtu
SFT-199
Qty:
Rheem RTG Series Tankless Water Heaters (LP)

Liquid Propane
Retail : $1,911.72 $1,089.68

You Save (43%)
Rheem RTG-70XLP-1 Residential Liquid Propane Outdoor Tankless Water Heater
1911.721089.68
150 MBtu
RTG-70XLP-1
In Stock
Qty:
Eemax HomeAdvantage II® Series Water Heater
Retail : $344.72 $232.69

You Save (32%)
Eemax HA011240 HomeAdvantage II® 11 KW, 240V Electric Tankless Water Heater
409.86276.66
11 KW
240 V, HA011240

Eemax HA013240 HomeAdvantage II® 13 KW, 240V Electric Tankless Water Heater
568.98384.06
13 KW
240 V, HA013240

Eemax HA008240 HomeAdvantage II® 8 KW, 240V Electric Tankless Water Heater
344.72232.69
8 KW
240 V, HA008240
In Stock
Qty:
Bosch Tronic 3000 T Series - Point of Use

Electric

Mini Tank Water Heaters

98% Efficiency

6 Year Warranty
Retail : $1,076.00 $495.93

You Save (54%)
Bosch 7738004998 Tronic 3000 T Series 7 Gallon, 120 Voltage, Point-of-Use Electic Mini-Tank Water Heater
1076.00495.93
7 Gallons
ES8
In Stock

Bosch 7738004997 Tronic 3000 T Series 4 Gallon, 120 Voltage, Point-of-Use Electic Mini-Tank Water Heater
808.00372.41
4 Gallons
ES4
In Stock

Bosch 7738004996 Tronic 3000 T Series 2.7 Gallon, 120 Voltage, Point-of-Use Electic Mini-Tank Water Heater
779.00359.04
2.7 Gallons
ES2.5TI
In Stock
Qty:
Rheem Prestige 12 Years - Indoor - Direct Vent - Natural Gas

Natural Gas

Residential Water Heater

Direct Vent

0.26 GPM

12 Year Warranty
Retail : $2,825.20 $1,610.36

You Save (43%)
Rheem RTGH-84DVLN-2 Prestige 157 Input MBtu Low Nox Indoor Residential Natural Gas Tankless Water Heater - Direct Vent - 12 Year Warranty
2825.201610.36
157 MBtu
0.26 GPM
RTGH-84DVLN-2
In Stock

Rheem RTGH-90DVLN-2 Prestige 120 Input MBtu Low Nox Indoor Residential Natural Gas Tankless Water Heater - Direct Vent - 12 Year Warranty
3176.021810.33
180 MBtu
RTGH-90DVLN-2
Qty:
Rheem Prestige 12 Years - Indoor - Direct Vent - Liquid Propane

Liquid Propane

Direct Vent

0.26 GPM

12 Year Warranty
Retail : $2,825.20 $1,610.36

You Save (43%)
Rheem RTGH-95DVLP-2 Prestige 199 Input MBtu Low Nox Indoor Residential Liquid Propane Tankless Water Heater - Direct Vent - 12 Year Warranty
3563.342031.10
199 MBtu
0.26 GPM
RTGH-95DVLP-2

Rheem RTGH-84DVLP-2 Prestige 157 Input MBtu Low Nox Indoor Residential Liquid Propane Tankless Water Heater - Direct Vent - 12 Year Warranty
2825.201610.36
157 MBtu
0.26 GPM
RTGH-84DVLP-2
In Stock

Rheem RTGH-90DVLP-2 Prestige 180 Input MBtu Low Nox Indoor Residential Liquid Propane Tankless Water Heater - Direct Vent - 12 Year Warranty
3176.021810.33
180 MBtu
RTGH-90DVLP-2
Qty:
Rheem Prestige 12 Years - Outdoor - Natural Gas

Natural Gas

Residential Water Heater

0.26 GPM

12 Year Warranty
Retail : $1,894.60 $1,705.14

You Save (10%)
Rheem RTGH-84XLN-2 Prestige 157 Input MBtu Low Nox Outdoor Residential Natural Gas Tankless Water Heater - 12 Year Warranty
1894.601705.14
157 MBtu
0.26 GPM
RTGH-84XLN-2
In Stock

Rheem RTGH-95XLN-2 Prestige 199 Input MBtu Low Nox Outdoor Residential Natural Gas Tankless Water Heater - 12 Year Warranty
2118.281906.46
199 MBtu
0.26 GPM
RTGH-95XLN-2
Qty:
AO Smith ProLine Series - Point-Of-Use Water Heaters

Electric

Residential Water Heater

6 Year Warranty
Retail : $634.00 $400.18

You Save (37%)
AO Smith 100326824 EPU-2.5 ProLine 2.5-Gallon Point-of-Use Residential Electric Water Heater - 6 Year Warranty
592.00373.67
2.5 Gallons
EPU-2.5
In Stock
Qty:
Takagi T-H3J - Outdoor Water Heaters (NG)

Natural Gas

Copper & Stainless Heat Exchanger

Condensing Water Heater

Direct Vent

6.6 GPM

5 Years

Energy Star
Retail : $1,738.00 $1,129.70

You Save (35%)
Takagi TH3J OS-NG T-H3J-OS-NG Residential Condensing 160000 BTU Outdoor Water Heater - Natural Gas
1738.001129.70
160 MBtu
6.6 GPM
T-H3J-OS-NG
In Stock

Takagi TH3-OS-NG T-H3-OS-NG Residential Condensing 199000 BTU Outdoor Water Heater - Natural Gas
2158.001402.70
199 MBtu
10 GPM
T-H3-OS-NG
Qty:

Now Shopping by

Availability Show In Stock Items Only Remove This Item

Clear All

Shopping Options

By using this site you agree to our © 2026 AF Supply Corp. All Rights Reserved.