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Gas Tankless Water Heaters

25 Results Found that Include 25 Products 

Results per page: 16 | 32 | 48
    Tankless Water Heater,Natural Gas
    • BOSCH
    • Tankless Water Heater, Natural Gas
    • Item # 2KJH3
    • Mfr. Model # 330 PN NG
    • Water Heater, Tankless, Gas Connection (In.) 1/2, Gas Type Natural Gas Type, Input (BTU) 74,900, Ignition...More

    Tankless Water Heater,Natural Gas
    • BOSCH
    • Tankless Water Heater, Natural Gas
    • Item # 1LXD1
    • Mfr. Model # 520 HN NG
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type Natural Gas Type, Input (BTU) 117,000, Ignition...More

    Water Heater,Tankless,Nat,11K-180K BTU
    • RHEEM
    • Water Heater, Tankless, Nat, 11K-180K BTU
    • Item # 21R452
    • Mfr. Model # RTG-84DVLN
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type Natural, Input (BTU) 11,000 - 180,000, Ignition...More

    Tankless Water Heater,Liquid Propane Gas
    • BOSCH
    • Tankless Water Heater, Liquid Propane Gas
    • Item # 2KJH4
    • Mfr. Model # 330 PN LP
    • Water Heater, Tankless, Gas Connection (In.) 1/2, Gas Type LP Gas Type, Input (BTU) 74,900, Ignition Type...More

    Water Heater,Tankless,Natural Gas
    • RINNAI
    • Water Heater, Tankless, Natural Gas
    • Item # 10D432
    • Mfr. Model # RL94eN
    • Water Heater, Tankless, Gas Connection (In.) 3/4 MNPT, Gas Type NG, Input (BTU) 199,000, Ignition Type Direct...More

    Water Heater,Tankless,LP,11K-199K BTU
    • RHEEM
    • Water Heater, Tankless, LP, 11K-199K BTU
    • Item # 21R457
    • Mfr. Model # RTGH-95DVLN
    • Water Heater, Condensing Tankless, Gas Connection (In.) 3/4, Gas Type Natural, Input (BTU) 11,000 -199,900,...More

    Tankless Water Heater,LP Gas
    • BOSCH
    • Tankless Water Heater, LP Gas
    • Item # 1LXD2
    • Mfr. Model # 520 HN LP
    • Tankless Water Heater, Gas Connection 3/4 In, LP Gas Type, Input 117,000 BTU, Hydro-Generated Ignition Type,...More

    Water Heater,Tankless,Liquid Propane
    • RINNAI
    • Water Heater, Tankless, Liquid Propane
    • Item # 10D427
    • Mfr. Model # RL75iP
    • Water Heater, Tankless, Gas Connection (In.) 3/4 MNPT, Gas Type LP, Input (BTU) 180,000, Ignition Type Direct...More

    Water Heater,Tankless,3/4 In,LP
    Tankless Water Heater,Natural Gas
    • BOSCH
    • Tankless Water Heater, Natural Gas
    • Item # 2KJG9
    • Mfr. Model # 940 ES NG
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type Natural Gas Type, Input (BTU) 199000, Ignition...More

    Water Heater,Tankless,Liquid Propane
    • RINNAI
    • Water Heater, Tankless, Liquid Propane
    • Item # 10D429
    • Mfr. Model # RL94iP
    • Water Heater, Tankless, Gas Connection (In.) 3/4 MNPT, Gas Type LP, Input (BTU) 190,000, Ignition Type Direct...More

    Water Heater,Tankless,Nat,11K-199K BTU
    • RHEEM
    • Water Heater, Tankless, Nat, 11K-199K BTU
    • Item # 21R454
    • Mfr. Model # RTG-95DVLN
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type Natural, Input (BTU) 11,000 - 199,900, Ignition...More

    Water Heater,Tankless,Liquid Propane
    • RINNAI
    • Water Heater, Tankless, Liquid Propane
    • Item # 10D433
    • Mfr. Model # RL94eP
    • Water Heater, Tankless, Gas Connection (In.) 3/4 MNPT, Gas Type LP, Input (BTU) 199,000, Ignition Type Direct...More

    Water Heater,Tankless,Natural Gas
    • RINNAI
    • Water Heater, Tankless, Natural Gas
    • Item # 10D428
    • Mfr. Model # RL94iN
    • Water Heater, Tankless, Gas Connection (In.) 3/4 MNPT, Gas Type NG, Input (BTU) 199,000, Ignition Type Direct...More

    Water Heater,Tankless,3/4 In,Natural
    Condensing Water Heater,Tankless,3/4,NG
    • BOSCH
    • Condensing Water Heater, Tankless, 3/4, NG
    • Item # 2VRE7
    • Mfr. Model # C1050ES NG
    • Condensing Water Heater, Tankless, Gas Connection 3/4 In., Gas Type NG, Input 199,000 BTU, Ignition Type...More

    Water Heater,Tankless,Nat,11K-157K BTU
    • RHEEM
    • Water Heater, Tankless, Nat, 11K-157K BTU
    • Item # 21R456
    • Mfr. Model # RTGH-84DVLN
    • Water Heater, Condensing Tankless, Gas Connection (In.) 3/4, Gas Type Natural, Input (BTU) 11,000 - 157,000,...More

    Water Heater,Tankless,LP,11K-180K BTU
    • RHEEM
    • Water Heater, Tankless, LP, 11K-180K BTU
    • Item # 21R453
    • Mfr. Model # RTG-84DVLP
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type LP, Input (BTU) 11,000 - 180,000, Ignition Type...More

    Tankless Water Heater,Liquid Propane Gas
    • BOSCH
    • Tankless Water Heater, Liquid Propane Gas
    • Item # 2KJH1
    • Mfr. Model # 940 ES LP
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type Liquid Propane Gas Type, Input (BTU) 199000,...More

    Water Heater,Tankless,NG,225,000 BTU
    • BOSCH
    • Water Heater, Tankless, NG, 225,000 BTU
    • Item # 6FZP4
    • Mfr. Model # C 1210 ESC NG
    • Water Heater, Tankless, Natural Gas, Input (BTU) 225,000, 4.6 GPM @ 90F Rise, 9.2 GPM @ 45F Rise, Gas...More

    Water Heater,Tankless,Natural Gas
    • RINNAI
    • Water Heater, Tankless, Natural Gas
    • Item # 10D426
    • Mfr. Model # RL75iN
    • Water Heater, Tankless, Gas Connection (In.) 3/4 MNPT, Gas Type NG, Input (BTU) 180,000, Ignition Type Direct...More

    Water Heater,Tankless,LP,11K-199K BTU
    • RHEEM
    • Water Heater, Tankless, LP, 11K-199K BTU
    • Item # 21R455
    • Mfr. Model # RTG-95DVLP
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type LP, Input (BTU) 11,000 - 199,900, Ignition Type...More

    Water Heater,Tankless,NG,225,000 BTU
    • BOSCH
    • Water Heater, Tankless, NG, 225,000 BTU
    • Item # 6FZP2
    • Mfr. Model # C 1210 ES NG
    • Water Heater, Tankless, Natural Gas, Input (BTU) 225,000, 4.6 GPM @ 90F Rise, 9.2 GPM @ 45F Rise, Gas...More

    Water Heater,Tankless,LP Gas,225,000 BTU
    • BOSCH
    • Water Heater, Tankless, LP Gas, 225,000 BTU
    • Item # 6FZW5
    • Mfr. Model # C 1210 ESC LP
    • Water Heater, Tankless, Liquid Propane, Input (BTU) 225,000, 4.6 GPM @ 90F Rise, 9.2 GPM @ 45F Rise, Gas...More

    Water Heater,Tankless,LP,225,000 BTU
    • BOSCH
    • Water Heater, Tankless, LP, 225,000 BTU
    • Item # 6FZP3
    • Mfr. Model # C 1210 ES LP
    • Water Heater, Tankless, Gas Connection (In.) 3/4, Gas Type Liquid Propane, Input (BTU) 225,000, Ignition Type...More

    Results per page: 16 | 32 | 48

      Gas tankless water heaters from Grainger can cut your water-heating bill considerably by eliminating the energy wasted by warmed water sitting unused in a tank. This selection includes units powered by natural or liquid propane gas. Choose from direct electronic, electronic spark, hydro-generated and pilot ignition types and a wide range of heating input (BTU) levels. Help provide hot water when and where it's needed without a storage tank. Get gas tankless water heaters from Grainger.