Shop tankless water heater sizing chart

Sponsored
$459.95
RV Tankless Water Heater 12 V On Demand Hot Water Heater 60,000 BTU
RecPro
$459.95
RV Tankless Water Heater 12 V On Demand Hot Water Heater 60,000 BTU
RecPro
$214.00
Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011
FactoryPure
$214.00
Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011
FactoryPure
$614.76
Rheem RTEX-24 Classic 5.9 GPM 24 Kw Tankless Electric On Demand Whole House Water Heater Water Heaters Tankless Water Heaters Whole House Tankless
Build
733
$614.76
Rheem RTEX-24 Classic 5.9 GPM 24 Kw Tankless Electric On Demand Whole House Water Heater Water Heaters Tankless Water Heaters Whole House Tankless
Build
733
$1,222.75
Rheem RRTG95XLN1671611 9.5 GPM 199900 BTU 120 Volt Natural Gas Whole House Outdoor Ultra Low Nox Tankless Water Heater Stainless Steel
Amazon.com
22
Free shipping
$1,222.75
Rheem RRTG95XLN1671611 9.5 GPM 199900 BTU 120 Volt Natural Gas Whole House Outdoor Ultra Low Nox Tankless Water Heater Stainless Steel
Amazon.com
22
$749.95
Rheem RTG-70XLN-3 7 GPM Outdoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70XLN-3
FactoryPure
16
$749.95
Rheem RTG-70XLN-3 7 GPM Outdoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70XLN-3
FactoryPure
16
$579.99
EZ Tankless EZDELUXELP 4.4 GPM 87500 BTU Liquid Propane Indoor Tankless Water Heater With Vent Kit New EZDELUXELP
FactoryPure
60
$579.99
EZ Tankless EZDELUXELP 4.4 GPM 87500 BTU Liquid Propane Indoor Tankless Water Heater With Vent Kit New EZDELUXELP
FactoryPure
60
$670.00
EZ Tankless EZSUPNG Supreme Indoor Tankless Water Heater 8.2 GPM 165000 BTU Natural Gas Direct Vent Kit Manufacturer RFB EZSUPNGR
FactoryPure
$670.00
EZ Tankless EZSUPNG Supreme Indoor Tankless Water Heater 8.2 GPM 165000 BTU Natural Gas Direct Vent Kit Manufacturer RFB EZSUPNGR
FactoryPure
$499.00
Eccotemp 45HI-NG 6.8 GPM Natural Gas Tankless Water Heater Manufacturer RFB 45HI-NGR
FactoryPure
$499.00
Eccotemp 45HI-NG 6.8 GPM Natural Gas Tankless Water Heater Manufacturer RFB 45HI-NGR
FactoryPure
$339.00
Marey ECO240 24 KW 240V 4.7 GPM Up To 5 Points Of Use Electric Tankless Water Heater Open Box ECO240-OB
FactoryPure
$339.00
Marey ECO240 24 KW 240V 4.7 GPM Up To 5 Points Of Use Electric Tankless Water Heater Open Box ECO240-OB
FactoryPure
$399.00
Marey ECO180 5.0 GPM Electric Tankless Water Heater Open Box ECO180
FactoryPure
160
$399.00
Marey ECO180 5.0 GPM Electric Tankless Water Heater Open Box ECO180
FactoryPure
160
$169.00
EZ Tankless Campchamp 1.8 GPM LP Propane Outdoor Tankless Water Heater Manufacturer RFB Ezcampchamp-RFB
FactoryPure
$169.00
EZ Tankless Campchamp 1.8 GPM LP Propane Outdoor Tankless Water Heater Manufacturer RFB Ezcampchamp-RFB
FactoryPure
$499.00
Eccotemp 45HI-LP 6.8 GPM Propane Tankless Water Heater Manufacturer RFB 45HI-LPR
FactoryPure
$499.00
Eccotemp 45HI-LP 6.8 GPM Propane Tankless Water Heater Manufacturer RFB 45HI-LPR
FactoryPure
$199.00
Marey GA10LP 3.1 GPM Propane Tankless Water Heater Open Box GA10LP
FactoryPure
$199.00
Marey GA10LP 3.1 GPM Propane Tankless Water Heater Open Box GA10LP
FactoryPure
$749.95
Rheem RTG-70DVLN-3 7 GPM Indoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70DVLN-3
FactoryPure
$749.95
Rheem RTG-70DVLN-3 7 GPM Indoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70DVLN-3
FactoryPure
$822.14
Rheem RTG-70DVLN-1 7 GPM 150000 BTU 120 Volt Natural Gas Whole House Tankless Water Heater Stainless Steel Water Heaters Tankless Water Heaters Whole
Build
20
$822.14
Rheem RTG-70DVLN-1 7 GPM 150000 BTU 120 Volt Natural Gas Whole House Tankless Water Heater Stainless Steel Water Heaters Tankless Water Heaters Whole
Build
20
$398.00
Mizudo 4.3 GPM Tankless Water Heater Indoor Natural Gas 100,000 BTU 120V New FDG-CS100W-NG
FactoryPure
179
$398.00
Mizudo 4.3 GPM Tankless Water Heater Indoor Natural Gas 100,000 BTU 120V New FDG-CS100W-NG
FactoryPure
179
$249.00
Marey ECO150 3.5 GPM Electric Tankless Water Heater Open Box ECO150
FactoryPure
259
$249.00
Marey ECO150 3.5 GPM Electric Tankless Water Heater Open Box ECO150
FactoryPure
259
$549.00
Marey GA24CSANG 8.34 GPM Natural Gas Tankless Water Heater Open Box GA24CSANG-OB
FactoryPure
128
$549.00
Marey GA24CSANG 8.34 GPM Natural Gas Tankless Water Heater Open Box GA24CSANG-OB
FactoryPure
128
$1,694.00
Rheem IKONIC RTGH-SR11I 11.2 GPM Indoor Tankless Gas Water Heater W/ Recirc Pump Super High-Efficiency Condensing New RTGH-SR11I
FactoryPure
2
$1,694.00
Rheem IKONIC RTGH-SR11I 11.2 GPM Indoor Tankless Gas Water Heater W/ Recirc Pump Super High-Efficiency Condensing New RTGH-SR11I
FactoryPure
2
$179.00
Marey GA10FNG 2.64 GPM 68,240 BTU NG Natural Gas Tankless Water Heater Open Box GA10FNG-OB
FactoryPure
1
$179.00
Marey GA10FNG 2.64 GPM 68,240 BTU NG Natural Gas Tankless Water Heater Open Box GA10FNG-OB
FactoryPure
1
$1,958.57
Rheem RECTGH-S11ip Ikonic 11.2 GPM 199900 BTU 120 Volt Compact Residential Indoor Liquid Propane Tankless Water Heater Stainless Steel Water Heaters
Build
$1,958.57
Rheem RECTGH-S11ip Ikonic 11.2 GPM 199900 BTU 120 Volt Compact Residential Indoor Liquid Propane Tankless Water Heater Stainless Steel Water Heaters
Build
$179.00
Marey PP220 2.0 GPM Electric Tankless Water Heater PPXE5 Open Box PP220
FactoryPure
244
$179.00
Marey PP220 2.0 GPM Electric Tankless Water Heater PPXE5 Open Box PP220
FactoryPure
244
$1,512.89
Rheem RTG-84XLN-3 8.4 GPM 180000 BTU 120 Volt Residential Outdoor Natural Gas Tankless Water Heater With Remote And Hot-Start Programming Stainless
Build
17
$1,512.89
Rheem RTG-84XLN-3 8.4 GPM 180000 BTU 120 Volt Residential Outdoor Natural Gas Tankless Water Heater With Remote And Hot-Start Programming Stainless
Build
17
$2,580.47
Eemax XTP018208 18 Kw Thermostatic Electric Tankless Water Heater Water Heaters Tankless Water Heaters Whole House Tankless Water Heaters
Build
$2,580.47
Eemax XTP018208 18 Kw Thermostatic Electric Tankless Water Heater Water Heaters Tankless Water Heaters Whole House Tankless Water Heaters
Build
$1,379.00
Rheem RTG-95DVELN-3 9.5 GPM 199900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater With Wi-Fi And Leakguard Leak Detection
Build
$1,379.00
Rheem RTG-95DVELN-3 9.5 GPM 199900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater With Wi-Fi And Leakguard Leak Detection
Build
$1,049.20
Rheem Electric Tankless Water Heater: Indoor, 36,000 W, 8 Gpm Max. Flow Rate, 18.25 in Overall Ht Model: RTEX-36
Grainger
1
$1,049.20
Rheem Electric Tankless Water Heater: Indoor, 36,000 W, 8 Gpm Max. Flow Rate, 18.25 in Overall Ht Model: RTEX-36
Grainger
1
$468.03
Rheem Electric Tankless Water Heater: Indoor, 13,000 W, 4.8 Gpm Max. Flow Rate, 12.63 in Overall Ht Model: RTEX-13
Grainger
1K+
$468.03
Rheem Electric Tankless Water Heater: Indoor, 13,000 W, 4.8 Gpm Max. Flow Rate, 12.63 in Overall Ht Model: RTEX-13
Grainger
1K+
$319.00
Eccotemp FVI12-NG 4.0 GPM Indoor Natural Gas Tankless Water Heater Manufacturer RFB FVI12-NGR
FactoryPure
$319.00
Eccotemp FVI12-NG 4.0 GPM Indoor Natural Gas Tankless Water Heater Manufacturer RFB FVI12-NGR
FactoryPure
$1,287.10
Rheem RTG-95XLN-1 9.5 GPM 199900 BTU 120 Volt Natural Gas Whole House Outdoor Ultra Low Nox Tankless Water Heater Stainless Steel Water Heaters
Build
22
$1,287.10
Rheem RTG-95XLN-1 9.5 GPM 199900 BTU 120 Volt Natural Gas Whole House Outdoor Ultra Low Nox Tankless Water Heater Stainless Steel Water Heaters
Build
22
$1,800.20
Rheem RTGH-RH11DVLP Prestige 11 GPM 199000 BTU 120 Volt Liquid Propane Whole House Tankless Water Heater With Built-In Recirculation Pump Stainless
Build
20
$1,800.20
Rheem RTGH-RH11DVLP Prestige 11 GPM 199000 BTU 120 Volt Liquid Propane Whole House Tankless Water Heater With Built-In Recirculation Pump Stainless
Build
20
$536.57
Rheem Electric Tankless Water Heater: Indoor, 18,000 W, 4.4 Gpm Max. Flow Rate, 18.25 in Overall Ht Model: RTEX-18
Grainger
1K+
$536.57
Rheem Electric Tankless Water Heater: Indoor, 18,000 W, 4.4 Gpm Max. Flow Rate, 18.25 in Overall Ht Model: RTEX-18
Grainger
1K+
$623.49
Rheem Electric Tankless Water Heater: Indoor, 24,000 W, 7 Gpm Max. Flow Rate, 18.25 in Overall Ht Model: RTEX-24
Grainger
733
$623.49
Rheem Electric Tankless Water Heater: Indoor, 24,000 W, 7 Gpm Max. Flow Rate, 18.25 in Overall Ht Model: RTEX-24
Grainger
733
$1,635.00
Rheem RTGH-95DVELN-3 Rheem RTGH Series 9.5 GPM 199900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater With Built-In Wifi Stainless
Build
36
$1,635.00
Rheem RTGH-95DVELN-3 Rheem RTGH Series 9.5 GPM 199900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater With Built-In Wifi Stainless
Build
36
$257.76
Excel RV Tankless Water Heater - Gas - Electric Ignition - Vent Free - 38,000 Btu EX93FR
etrailer.com
$257.76
Excel RV Tankless Water Heater - Gas - Electric Ignition - Vent Free - 38,000 Btu EX93FR
etrailer.com
$1,243.00
Rheem RTG-95DVLN-3 9.5 GPM 199900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater With Overheat Film Wrap And Remote Stainless
Build
$1,243.00
Rheem RTG-95DVLN-3 9.5 GPM 199900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater With Overheat Film Wrap And Remote Stainless
Build
$159.00
Eccotemp EL7 Luxe Tankless Water Heater Liquid Propane 1.85 GPM Outdoor 80 PSI Manufacturer RFB EL7R
FactoryPure
28
$159.00
Eccotemp EL7 Luxe Tankless Water Heater Liquid Propane 1.85 GPM Outdoor 80 PSI Manufacturer RFB EL7R
FactoryPure
28
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    Shop tankless water heater sizing chart

    Sponsored
    $459.95
    RV Tankless Water Heater 12 V On Demand Hot Water Heater 60,000 BTU
    RecPro
    More than 810 people from Bing viewed this product in the last 90 days
    $459.95
    RV Tankless Water Heater 12 V On Demand Hot Water Heater 60,000 BTU
    RecPro
    810+ viewed
    $214.00
    Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011
    FactoryPure
    $214.00
    Excel Vent-Free Propane LP 1.6 GPM Tankless Water Heater New 10011
    FactoryPure
    $614.76
    Rheem RTEX-24 Classic 5.9 GPM 24 Kw Tankless Electric On Demand Whole House Water Heater Water Heaters Tankless Water Heaters Whole House Tankless
    Build
    733
    More than 590 people from Bing viewed this product in the last 90 days
    $614.76
    Rheem RTEX-24 Classic 5.9 GPM 24 Kw Tankless Electric On Demand Whole House Water Heater Water Heaters Tankless Water Heaters Whole House Tankless
    Build
    733
    $1,222.75
    Rheem RRTG95XLN1671611 9.5 GPM 199900 BTU 120 Volt Natural Gas Whole House Outdoor Ultra Low Nox Tankless Water Heater Stainless Steel
    Amazon.com
    22
    Free shipping
    More than 740 people from Bing viewed this product in the last 90 days
    $1,222.75
    Rheem RRTG95XLN1671611 9.5 GPM 199900 BTU 120 Volt Natural Gas Whole House Outdoor Ultra Low Nox Tankless Water Heater Stainless Steel
    Amazon.com
    22
    $749.95
    Rheem RTG-70XLN-3 7 GPM Outdoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70XLN-3
    FactoryPure
    16
    $749.95
    Rheem RTG-70XLN-3 7 GPM Outdoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70XLN-3
    FactoryPure
    16
    $579.99
    EZ Tankless EZDELUXELP 4.4 GPM 87500 BTU Liquid Propane Indoor Tankless Water Heater With Vent Kit New EZDELUXELP
    FactoryPure
    60
    $579.99
    EZ Tankless EZDELUXELP 4.4 GPM 87500 BTU Liquid Propane Indoor Tankless Water Heater With Vent Kit New EZDELUXELP
    FactoryPure
    60
    $670.00
    EZ Tankless EZSUPNG Supreme Indoor Tankless Water Heater 8.2 GPM 165000 BTU Natural Gas Direct Vent Kit Manufacturer RFB EZSUPNGR
    FactoryPure
    $670.00
    EZ Tankless EZSUPNG Supreme Indoor Tankless Water Heater 8.2 GPM 165000 BTU Natural Gas Direct Vent Kit Manufacturer RFB EZSUPNGR
    FactoryPure
    $499.00
    Eccotemp 45HI-NG 6.8 GPM Natural Gas Tankless Water Heater Manufacturer RFB 45HI-NGR
    FactoryPure
    $499.00
    Eccotemp 45HI-NG 6.8 GPM Natural Gas Tankless Water Heater Manufacturer RFB 45HI-NGR
    FactoryPure
    $339.00
    Marey ECO240 24 KW 240V 4.7 GPM Up To 5 Points Of Use Electric Tankless Water Heater Open Box ECO240-OB
    FactoryPure
    $339.00
    Marey ECO240 24 KW 240V 4.7 GPM Up To 5 Points Of Use Electric Tankless Water Heater Open Box ECO240-OB
    FactoryPure
    $399.00
    Marey ECO180 5.0 GPM Electric Tankless Water Heater Open Box ECO180
    FactoryPure
    160
    $399.00
    Marey ECO180 5.0 GPM Electric Tankless Water Heater Open Box ECO180
    FactoryPure
    160
    $169.00
    EZ Tankless Campchamp 1.8 GPM LP Propane Outdoor Tankless Water Heater Manufacturer RFB Ezcampchamp-RFB
    FactoryPure
    $169.00
    EZ Tankless Campchamp 1.8 GPM LP Propane Outdoor Tankless Water Heater Manufacturer RFB Ezcampchamp-RFB
    FactoryPure
    $499.00
    Eccotemp 45HI-LP 6.8 GPM Propane Tankless Water Heater Manufacturer RFB 45HI-LPR
    FactoryPure
    $499.00
    Eccotemp 45HI-LP 6.8 GPM Propane Tankless Water Heater Manufacturer RFB 45HI-LPR
    FactoryPure
    $199.00
    Marey GA10LP 3.1 GPM Propane Tankless Water Heater Open Box GA10LP
    FactoryPure
    $199.00
    Marey GA10LP 3.1 GPM Propane Tankless Water Heater Open Box GA10LP
    FactoryPure
    $749.95
    Rheem RTG-70DVLN-3 7 GPM Indoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70DVLN-3
    FactoryPure
    $749.95
    Rheem RTG-70DVLN-3 7 GPM Indoor Tankless Water Heater Natural Gas High-Efficiency Non-Condensing New RTG-70DVLN-3
    FactoryPure
    $822.14
    Rheem RTG-70DVLN-1 7 GPM 150000 BTU 120 Volt Natural Gas Whole House Tankless Water Heater Stainless Steel Water Heaters Tankless Water Heaters Whole
    Build
    20
    $822.14
    Rheem RTG-70DVLN-1 7 GPM 150000 BTU 120 Volt Natural Gas Whole House Tankless Water Heater Stainless Steel Water Heaters Tankless Water Heaters Whole
    Build
    20
    $398.00
    Mizudo 4.3 GPM Tankless Water Heater Indoor Natural Gas 100,000 BTU 120V New FDG-CS100W-NG
    FactoryPure
    179
    $398.00
    Mizudo 4.3 GPM Tankless Water Heater Indoor Natural Gas 100,000 BTU 120V New FDG-CS100W-NG
    FactoryPure
    179
    $249.00
    Marey ECO150 3.5 GPM Electric Tankless Water Heater Open Box ECO150
    FactoryPure
    259
    $249.00
    Marey ECO150 3.5 GPM Electric Tankless Water Heater Open Box ECO150
    FactoryPure
    259
    $549.00
    Marey GA24CSANG 8.34 GPM Natural Gas Tankless Water Heater Open Box GA24CSANG-OB
    FactoryPure
    128
    $549.00
    Marey GA24CSANG 8.34 GPM Natural Gas Tankless Water Heater Open Box GA24CSANG-OB
    FactoryPure
    128