We value your feedback on the NEW FirstSupply.com – look for updates and improvements!

Serving the Midwest in HVAC, Plumbing, PVF, Well & Septic and Waterworks.

Family BrandsHelpLocations

Site Search

{0} items in cart

loading content

Refine Results

: A.O. Smith(32)
Bosch(2)
IBC®(2)
Intellihot(6)
Navien®(24)
: Commercial(2)
Dual(35)
Residential(4)
: 0.81(18)
0.82(5)
0.89(2)
0.9(2)
0.93(2)
: 0.5 to 11.1 gpm(1)
10 gpm(5)
10.1 gpm(4)
10.5 gpm Max(6)
13.1 gpm(1)
: Liquid Propane(22)
Liquid Propane / Natural Gas(16)
Natural Gas(20)
: 120,000 BTU/hr(5)
140,000 BTU/hr(2)
150,000 BTU/hr(2)
160,000 BTU/hr(6)
180,000 BTU/hr(8)
: Indoor(18)
Indoor / Outdoor(15)
Outdoor(9)
: No(6)
Yes(34)
: 2 in, 3 in(9)
3 in, 4 in(12)
4 in(4)
5 in(1)
: Concentric Direct(8)
Direct(7)
Forced Draft Direct(7)
Non-Direct Vent(9)
POWER(1)

Gas Tankless Water Heaters

67 products

Sort

View

Per Page

content loaded

Bosch Greentherm T9900 SE199 199 Tankless Water Heater with Built-in Recirculation Pump

Bosch Greentherm T9900 SE199 199 Tankless Water Heater with Built-in Recirculation Pump

Item #BTC7736503731

MFG #7-736-503-731

Compare

Bosch T9800 SE199 Greentherm 9000 High Efficiency Tankless Water Heater, 199,000 BTU, Natural Gas

Bosch T9800 SE199 Greentherm 9000 High Efficiency Tankless Water Heater, 199,000 BTU, Natural Gas

Item #BTC7736503581

MFG #7-736-503-581

Compare

IBC® SFT199-1 Superflow Condensing Tankless Water Heater, Natural Gas

IBC® SFT199-1 Superflow Condensing Tankless Water Heater, Natural Gas

Item #IBCSFT1991

MFG #014-011

Compare

NPE-240S2 199BTU Condensing Tankless Water Heater

NPE-240S2 199BTU Condensing Tankless Water Heater

Item #NVNNPE240S2

MFG #NPE-240S2

Compare

NPE-240A2 High-Efficiency Advanced Comfort Flow Condensing Tankless Water Heater

NPE-240A2 High-Efficiency Advanced Comfort Flow Condensing Tankless Water Heater

Item #NVNNPE240A2

MFG #NPE-240A2

Compare

NPE-210S2 180BTU Condensing Tankless Water Heater

NPE-210S2 180BTU Condensing Tankless Water Heater

Item #NVNNPE210S2

MFG #NPE-210S2

Compare

NPE-210A2 180BTU Advanced Comfort Flow Condensing Tankless Water Heater

NPE-210A2 180BTU Advanced Comfort Flow Condensing Tankless Water Heater

Item #NVNNPE210A2

MFG #NPE-210A2

Compare

NPE-180S2 150BTU Condensing Tankless Water Heater

NPE-180S2 150BTU Condensing Tankless Water Heater

Item #NVNNPE180S2

MFG #NPE-180S2

Compare

IBC® SFT 199K Superflow Condensing Tankless Water Heater, Natural Gas

IBC® SFT 199K Superflow Condensing Tankless Water Heater, Natural Gas

Item #IBCSFT199

MFG #SFT 199K

Compare

First Mobile presents FirstSupply.com in a tile-based menu on your phone!

First InStock is our scannable label program makes it easy to stock your shop with First Supply!