Best Tankless Water Heaters 2021

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Whole House Salt-Free Water Softe…

A.O. Smith Signature 100 50 …

A.O. Smith Signature 100 50 …

A.O. Smith Signature 100 40 …

A.O. Smith Signature 100 48 …

A.O. Smith Signature 100 2.…

A.O. Smith Signature 100 Ser…

Mini 3.5-1, Point-Of-Use, Tankless Ele…

VEVOR Electric Water Heater 18 …

$194.90

VEVOR

5% Off*

VEVOR Propane Tankless Water H…

$393.99

VEVOR

Curbside

A.O. Smith Signature 100 40 …

$609.00

Lowe's

5% Off*

VEVOR Instant Water Heater 18K…

$219.99

VEVOR

5% Off*

VEVOR Gas Tankless Water H…

$299.99

VEVOR

5% Off*

VEVOR Tankless Electric Water He…

$213.90

VEVOR

Outdoor Pipe Cover For Tankless Ga…

VEVOR Instant Water Heater 8K…

$133.99

VEVOR

Rinnai rxp199in 199K BTU Natura…

Rinnai rx199in Sensei RX 11 GP…

Performance 36 Kw 7.03 GPM 240-Vo…

VEVOR Instant Water Heater 8K…

$133.99

VEVOR

5% Off*

VEVOR Portable Propane Water H…

$130.99

VEVOR

Rinnai rxp199in 199K BTU Natura…

Rinnai rx199in Sensei RX 11 GP…

VEVOR Tankless Electric Water He…

$228.99

VEVOR

Curbside

Performance 36 Kw 7.03 GPM 240-Vo…

Rinnai rl75in 180K BTU High Efficien…

VEVOR Rv Tankless Water H…

$219.90

VEVOR

5% Off*

VEVOR Rv Tankless Water H…

$238.99

VEVOR

Performance Platinum 8.4 GP…

High Efficiency Non-Condensing 6.6 G…

$992.60

Home Depot

4.5

Navien NPE-210A2 180,000 BTU Con…

$1,773.00

MyTanklesswater…

Free shipping

Performance Platinum 9.0 GP…

3/4in Tankless Water Heater Val…

$51.29

Amazon.com

4.0

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  Tankless Water Heater
  $1,399.99
  W
  Wayfair
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  Stiebel Eltron 239223 Tempra 29 Pl…
  $999.00
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  Rheem RTEX-06T Performance Ser…
  $189.00
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  Ferguson Home
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  Stiebel Eltron 239217 Tempra 29 Tr…
  $699.00
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  Stiebel Eltron 202145 DHC-E Plus T…
  $329.00
  $424.00
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  WebstaurantStore
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  Rheem RTGH Series 9 - Residentia…
  $1,688.20
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  ACWholesalers
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  Rheem RTGH-84DVLN-3 Super Hig…
  $1,188.00
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  Bed Bath & Beyond
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  4.4
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  Noritz America NRC661-DV-LP Pro…
  $99,299.99
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  MyTanklesswaterHeater
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  Rheem RTG-84DVLN-3 8.4 GPM In…
  $899.00
  F
  FactoryPure
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  Rheem Super High Efficiency Cond…
  $1,188.00
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  Wayfair
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  Stiebel Eltron 203671 DHC-E 8/10 …
  $357.00
  W
  WebstaurantStore
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  Gas Tankless Water Heater
  $22,177.16
  G
  Grainger
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  Rheem RTGH-95DVLN-3 9.5 GPM I…
  $1,349.00
  F
  FactoryPure
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  Noritz NR662 140,000 BTU Outdoo…
  $99,894.31
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  MyTanklesswaterHeater
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  Ecosmart Electric Tankless Water H…
  $409.29
  W
  Walmart
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  3.7
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  Rheem RTGH-95DVLN-3 RTGH Su…
  $1,466.94
  S
  SupplyHouse.com
  Free shipping
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  NR83DVC 180,000 BTU Concentri…
  $991,167.31
  M
  MyTanklesswaterHeater
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  Rheem RTGH Series 9-Residential …
  $1,336.00
  P
  Power Equipment Direct
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  4.8
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  Stiebel Eltron 236009 Mini-E 4-2 Poi…
  $239.00
  $337.00
  W
  WebstaurantStore
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  4.4
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  Rheem RTGH-90DVLN-3 Super Hig…
  $1,336.00
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  Bed Bath & Beyond
  Free shipping
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  Bosch Tronic TR4000C-3 Electric T…
  $319.95
  U
  US eBay
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  Stiebel Eltron 222039 Mini 4 Point-…
  $179.00
  WebstaurantStore
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  Rheems Electric Tankless Water He…
  $175.00
  U
  US eBay
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  Stiebel Eltron 236011 Mini-E 2-1 Poi…
  $239.00
  WebstaurantStore
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  Stiebel Eltron 240-Volt 36-Kw-Kw 7.…
  $749.00
  L
  Lowe's
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  Titan 16 W Tankless Electric Tankle…
  $333.00
  W
  Walmart
  Free shipping
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  4.5
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  Rinnai SENSEI cx199in Natural Ga…
  $1,577.52
  $2,540.23
  W
  WebstaurantStore
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  4.2
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  28
  4.2
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  NRC98DV 180,000 BTU Direct Ven…
  $99,456.06
  M
  MyTanklesswaterHeater
  Free shipping
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  3.1
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  3.1
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  Performance 11 Kw 2.15 GPM 240…
  $252.03
  H
  Home Depot
  Free shipping
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  Rheem RTGH-SR11I IKONIC High-…
  $2,054.17
  S
  SupplyHouse.com
  Free shipping
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  4.1
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  27
  4.1
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  Noritz NRC711 157,000 BTU Outdo…
  $99,300.00
  M
  MyTanklesswaterHeater
  Free shipping
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  Rheem RTGH-95DVLN-3 Super Hig…
  $1,499.00
  B
  Bed Bath & Beyond
  Free shipping
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  27
  4.5
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  Noritz NR50-OD Residential Natura…
  $799.95
  S
  SuppliesDepot.com
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  Rinnai High Efficiency Non-Conden…
  $893.34
  $992.60
  L
  Lowe's
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  Rheem RTGH Series 8.4-Residenti…
  $1,366.60
  P
  Power Equipment Direct
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  4.2
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  88
  4.2
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  Rinnai Tankless Water Heater (Resi…
  $1,056.99
  B
  Bed Bath & Beyond
  Free shipping
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High Efficiency Non-Condensing 5.3 G…
$884.10
Home Depot
4.5
·
21
Stiebel Eltron 233219 SHC Mini …
$189.00
24hr Supply
4.5
·
435
Performance Platinum 11 GPM …
$1,701.38
Home Depot
4.0
·
315
Rinnai cx199in 199K BTU Conde…
$1,752.80
24hr Supply
5.0
·
10
Titan 8.5 W Tankless Electric …
$259.99
Ace Hardware
4.5
·
57
5% Off*
VEVOR Portable Propane Water H…
$103.99
VEVOR
Rinnai rx199in Super High Efficie…
$1,703.10
24hr Supply
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174
Tankless Outdoor Portable Campin…
$127.46

$169.95
Flame King
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Performance 50 Gal. Tall 4500-Wa…
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Home Depot
4.0
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58
Sensei Super High Efficiency Plus 1…
$1,861.02

$2,067.80
Home Depot
4.5
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811
Performance 13 Kw 2.54 GPM 240-Vo…
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Home Depot
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1K+
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24hr Supply
Eccotemp L5 Portable Tankles…
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Cabela's
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Rheem RTGH-95DVLN-3 RTGH …
$1,364.09
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4.5
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15
Rinnai cxp199in High Efficiency Pl…
$2,005.29
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5.0
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VEVOR Tankless Water Heater Ele…
$84.99
VEVOR
Suburban ST-60 60, 000 BTU Tankles…
$420.19

$529.99
Camping World
Free shipping
Refurbished
Stiebel Eltron Tempra 36 Plus 7…
$599.00
FactoryPure
4.5
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1K+
Rheem Professional Classic Electric W…
$743.95
HVAC Direct
4.5
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67
Hike Crew Tankless RV Hot Water He…
$537.99
Kohl's
4.0
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31
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5 Best Tankless Water Heaters | #1 Online Buying Guide