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Increase the hot water capacity of your home with one of our hot water expansion tanks or hot water storage tanks. Also help reduce water hammer with one of our water hammer arrestors.
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Model Number 537-1 is the Number 1 Seller
Learn More About 537-1
Amtrol Diatrol - 0.75 Gallon - Water Hammer Arrestor
Model: 537-1
Amtrol - 537-1 - 0.75 Gallon - Water Hammer Arrestor - 3/4" NPT Connection
25% Buy This
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5(1)
Q&A (1)
$100.00
Only 1 In-Stock
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Model Number PFXT5I is the Number 2 Seller
Learn More About PFXT5I
ProFlo
ProFlo PFXT - 2 Gallon - In-Line Thermal Expansion Tank
Model: PFXT5I
3/4" Stainless Steel NPTM Connection - 0.45 Gallons Max Acceptance
25% Buy This
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$29.00
In-Stock
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Model Number ST-30V is the Number 3 Seller
Learn More About ST-30V
Amtrol Therm-X-Trol - 14 Gallon - Vertical Thermal Expansion Tank
Model: ST-30V
3/4" NPT Connection - 11.3 Gallons Max Acceptance
17% Buy This
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$209.00
In-Stock
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Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
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Model Number ST-5 is the Number 4 Seller
Learn More About ST-5
Amtrol Therm-X-Trol - 2 Gallon - In-Line Thermal Expansion Tank
Model: ST-5
3/4" NPT Connection - 0.9 Gallons Max Acceptance
17% Buy This
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Q&A (1)
$39.00
In-Stock
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Model Number ST-12C-DD is the Number 5 Seller
Learn More About ST-12C-DD
Amtrol Therm-X-Trol® - 6.4 Gallon - In-Line Thermal Expansion Tank - ASME Certified
Model: ST-12C-DD
3/4" NPT Connection - 3.2 Gallons Max Acceptance
17% Buy This
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$1,508.00
In-Stock
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Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
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Learn More About ST-8
Amtrol Therm-X-Trol - 3.2 Gallon - In-Line Thermal Expansion Tank
Model: ST-8
3/4" NPT Connection - 1.9 Gallons Max Acceptance
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$55.00
In-Stock
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Learn More About ST-12
Amtrol Therm-X-Trol - 4.4 Gallon - In-Line Thermal Expansion Tank
Model: ST-12
3/4" NPT Connection - 3.2 Gallons Max Acceptance
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$46.00
In-Stock
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Learn More About ST-25V
Amtrol Therm-X-Trol - 10.3 Gallon - Vertical Thermal Expansion Tank
Model: ST-25V
3/4" NPT Connection - 10.3 Gallons Max Acceptance
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$149.00
In-Stock
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Learn More About ST-42V
Amtrol Therm-X-Trol - 20 Gallon - Vertical Thermal Expansion Tank
Model: ST-42V
3/4" NPT Connection - 11.4 Gallons Max Acceptance
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$249.00
In-Stock
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Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
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Learn More About ST-60V
Amtrol Therm-X-Trol - 34 Gallon - Vertical Thermal Expansion Tank
Model: ST-60V
1-1/4" NPT Connection - 34 Gallons Max Acceptance
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$319.00
In-Stock
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Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
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Learn More About ST-80V
Amtrol Therm-X-Trol - 44 Gallon - Vertical Thermal Expansion Tank
Model: ST-80V
1-1/4" NPT Connection - 33.9 Gallons Max Acceptance
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$750.00
Only 5 In-Stock
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Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Add To Cart
Learn More About PFXT12I
ProFlo
ProFlo PFXT - 4.8 Gallon - In-Line Thermal Expansion Tank
Model: PFXT12I
3/4" Stainless Steel NPTM Connection - 0.73 Gallons Max Acceptance
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$35.00
In-Stock
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Learn More About ST-20VC
Amtrol Therm-X-Trol® - 8 Gallon - Vertical Thermal Expansion Tank - ASME Certified
Model: ST-20VC
3/4" NPT Connection - 3.2 Gallons Max Acceptance
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$1,600.00
Factory-Direct
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Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About ST-30VC
Amtrol Therm-X-Trol® - 14 Gallon - Vertical Thermal Expansion Tank - ASME Certified
Model: ST-30VC
3/4" NPT Connection - 8.96 Gallons Max Acceptance
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$1,779.00
In-Stock
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Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About ST-42VC
Amtrol Therm-X-Trol® - 18 Gallon - Vertical Thermal Expansion Tank - ASME Certified
Model: ST-42VC
3/4" NPT Connection - 11.4 Gallons Max Acceptance
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$1,987.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About ST-5C-DD
Amtrol Therm-X-Trol® - 2 Gallon - In-Line Thermal Expansion Tank - ASME Certified
Model: ST-5C-DD
3/4" NPT Connection - 0.9 Gallons Max Acceptance
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$1,199.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About ST-80VC
Amtrol Therm-X-Trol® - 53 Gallon - Vertical Thermal Expansion Tank - ASME Certified
Model: ST-80VC
1-1/4" NPT Connection - 34 Gallons Max Acceptance
Write a Review
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$3,119.00
In-Stock
Freight Icon
Free Shipping
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
2% Check Discount Icon
2% Check Discount
Learn More About 2% Check Discount Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
Add To Cart
Learn More About ST-180V
Amtrol Therm-X-Trol - 62 Gallon - Vertical Thermal Expansion Tank
Model: ST-180V
1-1/4" NPT Connection - 34.1 Gallons Max Acceptance
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$865.00
Factory-Direct
Freight Icon
Free Shipping & Lift Gate
Learn More About Free Freight *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
Add To Cart
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