Expansion Tank for Water Heater

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EASTMAN 2.0-Gallon Expansion …

Eastman 4.5 Gal Water Heater Exp…

$54.99

Ace Hardware

AO Smith Water Heater Potable Ex…

Everbilt EF-TET-2T Thermal Expansio…

$24.99

eBay.com

5.0

Tankro - RO Water Filtration System …

$37.99

Home Depot

5.0

1PCS Expansion Tank For Hot Col…

AMTROL 140-735 Thermal Expansio…

Hustler 601996 - Expansion Tank Z…

$28.88

Griggs Lawn And …

Amtrol Thermxtrol St-5 Thermal Exp…

$75.00

eBay.com

Water Worker Water Heater Expansio…

$118.34

DkHardware.com

4.5

Series ETX Non-Potable Water Ex…

No. 30 Expansion Tank For Hydroni…

No 60 Expansion Tank For Hydroni…

$131.87

Home Depot

5.0

Hot Water Heater Expansion Tank 2…

$42.99

Walmart

Free shipping

Everbilt 2 Gal. Thermal Expansio…

$49.95

eBay

5.0

Meyle Expansion Tank: Built From …

Amtrol Therm-X-Span Thermal Ex…

$29.99

eBay.com

Amtrol 140N43 Therm-X-Trol 2 G…

Kit, Expansion Tank 71549HYD

$26.28

Mowpart.com

Everbilt 2 Gal. Thermal Expansio…

$49.95

eBay

5.0

Meyle Expansion Tank: Built From …

Amtrol Therm-X-Span Thermal Ex…

$29.99

eBay.com

Amtrol 140N43 Therm-X-Trol 2 G…

Kit, Expansion Tank 71549HYD

$26.28

Mowpart.com

Tankro - RO Water Filtration System …

$359.99

Home Depot

4.5

PROFLO PFXT5I 2.1 Gallon Therm…

AO Smith Water Heater Expansio…

$52.20

US eBay

5.0

AMTROL INC No. 30 Expansion Tan…

PROFLO 4.8 Gallon Thermal Expansio…

$92.82

Bed Bath & Beyond

5.0

Amtrol Extrol Ex-15 Ex15 Boiler Expa…

$50.96

eBay

Free shipping

Tankro - RO Water Filtration System …

$239.99

Home Depot

5.0

Expansion Tank 62JKCT59 For 32…

$60.97

USA eBay

Free shipping

Watts Expansion Tank In Gray | H…

$776.96

Lowe's

Amtrol Extrol EX-15 EX15 Boiler Expa…

$50.96

eBay.com

5.0

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  Potable Thermal Expansion Tank F…
  $95.31
  U
  US eBay
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  4.7
  ·
  119
  4.7
  119 ratings
  Eastman 60023 Water Heater Expa…
  $65.00
  W
  Walmart
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  Water Worker G-5W And G-12W Th…
  $74.99
  A
  Amazon.com
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  Potable Thermal Expansion Tank F…
  $71.49
  E
  eBay.com
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  EFIELD Water Heater Expansion Ta…
  $43.99
  A
  Amazon.com
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  TT FLEX Potable Thermal Expansio…
  $64.99
  A
  Amazon.com
  Free shipping
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  4.7
  ·
  119
  4.7
  119 ratings
  Eastman 60022 Water Heater Expa…
  $40.22
  $44.99
  W
  Walmart
  Free shipping
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  Amtrol Therm-X-Trol St-5 Thermal E…
  $75.00
  E
  eBay
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  4.7
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  54
  4.7
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  Amtrol ST-12 Therm-X-Trol In-Line …
  $89.00
  T
  Total Home Supply
  Free shipping
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  Amtrol & Water Worker Heater Expa…
  $70.41
  W
  Walmart
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  CLIMBER 4.5 Gallon Water Heater …
  $30.54
  $31.37
  A
  AliExpress
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  5
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  2
  5
  2 ratings
  Flexcon Industries Ph12 Flex2pro T…
  $134.64
  A
  alumigogo
  Free shipping
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  Amtrol Therm X Trol St 5 Water Hea…
  $179.90
  E
  Everymarket INC
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  4.7
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  11
  4.7
  11 ratings
  Water Worker Water Heater Expans…
  $88.79
  Hardware Supply
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  4.7
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  119
  4.7
  119 ratings
  ZORO SELECT 60023 Thermal Exp…
  $66.25
  Zoro
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  EFIELD Water Heater Expansion Ta…
  $28.88
  P
  Plumbingsell
17. Good Deal
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  4.9
  ·
  21
  4.9
  21 ratings
  Amtrol Therm-X-Trol ST-42V 20 Gal…
  $384.49
  $778.00
  W
  WebstaurantStore
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  4.9
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  12
  4.9
  12 ratings
  New! Watts DET-12-M1-HD Portabl…
  $41.99
  U
  US eBay
  Free shipping
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  4.8
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  16
  4.8
  16 ratings
  Amtrol T-5 THERM-X-SPAN Expan…
  $54.69
  A
  Amazon.com
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  RHEEM RRT-25 Rheem RRT Ther…
  $366.72
  V
  Voomi Supply
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  Amtrol Therm-X-Trol ST-5 Thermal …
  $75.00
  E
  eBay.com
  Free shipping
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  4.9
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  28
  4.9
  28 ratings
  Amtrol Therm-X-Trol ST-210V 86 G…
  $999.00
  $1,887.00
  W
  WebstaurantStore
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  5
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  3
  5
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  Easyflex EF-TET-2 2 Gallon Water …
  $25.99
  W
  WebstaurantStore
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  4.8
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  92
  4.8
  92 ratings
  Watts 0067373 Potable Water Expa…
  $326.12
  P
  Parts HNC
25. Saved
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  Fit Use Compatible: Tank Water He…
  $85.25
  A
  Amazon.com
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  4.9
  ·
  21
  4.9
  21 ratings
  Amtrol Therm-X-Trol ST-180V 62 G…
  $949.00
  $1,662.00
  W
  WebstaurantStore
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  4.7
  ·
  10
  4.7
  10 ratings
  Water Worker Amtrol 2 Gal Water H…
  $77.00
  $92.40
  E
  eBay
  Free shipping
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  5
  ·
  20
  5
  20 ratings
  Watts 0067370 PLT-5, 2.1 Gallon P…
  $92.41
  S
  SupplyHouse.com
29. Saved
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  4.9
  ·
  102
  4.9
  102 ratings
  Amtrol Extrol EX-30 4.4 Gallon In-Li…
  $56.99
  $123.00
  W
  WebstaurantStore
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  SALE
  6L Wall Mounted Boiler Expansion …
  $23.14
  $36.74
  A
  AliExpress
31. Saved
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  4.8
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  42
  4.8
  42 ratings
  Amtrol Therm-X-Trol Water Heater …
  $115.95
  G
  Global Equipment Company
  Free shipping
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  SALE
  Amtrol Extrol SX-130V 81 Gallon Ve…
  $799.00
  $1,560.00
  W
  WebstaurantStore
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  5
  ·
  5
  5
  5 ratings
  Amtrol Extrol Pro EX-30PRO 4.4 Ga…
  $74.99
  $154.00
  W
  WebstaurantStore
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  5
  ·
  5
  5
  5 ratings
  Watts 67372 8.5 Gallon 150 PSI Ex…
  $582.35
  V
  Voomi Supply
35. Saved
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  American Water Heater Expansion …
  $44.03
  W
  Walmart
  Free shipping
36. Saved
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  4.6
  ·
  17
  4.6
  17 ratings
  Amtrol ST-1 Therm-X-Trol In-Line T…
  $31.50
  T
  Total Home Supply
  Free shipping
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Water Heater Expansion Tank F…
$64.86
Walmart
Free shipping
Amtrol 118-155 SX-160V Extrol Expa…
$1,092.99
SupplyHouse.com
5.0
·
2
Water Worker Amtrol 2 Gal Wat…
$76.49
Max Warehouse
5.0
·
1
AMTROL-WORTHINGTON …
$125.73
Voomi Supply
Used
Watts DET-12-M1-HD Portable Wate…
$27.98
eBay.com
5.0
·
8
Amtrol & Water Worker G5L Heat…
$75.40
Walmart
Free shipping
Amtrol ST-5C Therm-X-Trol The…
$1,080.89
Voomi Supply
2.1 Gal Thermal Expansion Tank F…
$58.99
Craft Supply
23 % price drop
Amtrol Therm-X-Trol ST-60V 34 Gallo…
$519.00

$1,005.00
WebstaurantStore
Pre-Charged Non-Potable Water Ex…
$44.42
Home Depot
4.5
·
22
Used
Taco 119 Gallon Boiler Expansion …
$1,500.00
eBay.com
Free shipping
Bluefin EXW20V 20 Gallon Well Expa…
$254.83
SupplyHouse.com
4.5
·
3
Amtrol 118-153 SX-90V Extrol Expan…
$799.36
SupplyHouse.com
5.0
·
5
Amtrol Therm-X-Trol - 14 Gallon - Vert…
$77.50

$111.61
jmpropiedades.com
Free shipping
Therm-X-Trol ST-12 Expansion Tank
$119.20
Home Depot
4.5
·
51
MLR Engineering Aluminum SMG E…
$155.00
ECS Tuning
Free shipping
45 % price drop
A.O. Smith TW-5-5 Expansion Tank 1…
$97.67
US eBay
Free shipping
Amtrol 141-363 Thermal Expansio…
$100.70
Voomi Supply
4.5
·
30
2 Gal. 1 Year Water Heater Expansio…
$35.71
Home Depot
5.0
·
4
Used
Watts DET-12-M1-HD Portable Wate…
$110.00
eBay.com
5.0
·
8
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- Expansion Tank for Tank Water Heater - In Stock
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Expansion Tank for Tank Water Heater - In Stock

Top 10 Best Thermal Expansion Tank For Water Heater of 2025