Shipping Crate Icon
Free Shipping On Orders Over $199
Welcome:  Sign In | Contact Us
Call Us: (855)-436-0140
Home » »

Domestic Hot Water Tanks

Quick Search
Plus Icon
Loading Image
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.
Filter ▼
Model Number PFXT12I is a Recently Added Product
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
Write a Review
Ask a Question
$35.00
In-Stock
Add To Cart
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
38% 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
Add To Cart
Model Number ST-5 is the Number 2 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
31% Buy This
Write a Review
Ask a Question
$39.00
In-Stock
Add To Cart
Model Number ST-12 is the Number 3 Seller
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
15% Buy This
Write a Review
Ask a Question
$46.00
In-Stock
Add To Cart
Model Number ST-8 is the Number 4 Seller
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
8% Buy This
Write a Review
Ask a Question
$55.00
In-Stock
Add To Cart
Model Number PFXT5I is the Number 5 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
8% Buy This
Write a Review
Ask a Question
$29.00
In-Stock
Add To Cart
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
Write a Review
Ask a Question
$149.00
In-Stock
Add To Cart
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
Write a Review
Ask a Question
$209.00
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.
Add To Cart
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
Write a Review
Ask a Question
$249.00
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.
Add To Cart
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
Write a Review
Ask a Question
$319.00
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.
Add To Cart
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
Write a Review
Ask a Question
$750.00
In-Stock
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
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
Write a Review
Ask a Question
$865.00
Only 1 In-Stock
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
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
Write a Review
Ask a Question
$1,508.00
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-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
Write a Review
Ask a Question
$1,600.00
Factory-Direct
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-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
Write a Review
Ask a Question
$1,779.00
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-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
Write a Review
Ask a Question
$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
Write a Review
Ask a Question
$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
Ask a Question
$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

ABOUT US
+−
COMMUNITY
+−
CUSTOMER SERVICE
+−
DISCOUNT DEN
+−
PARTNERSHIPS
+−
PRODUCT SUPPORT
+−
Experts
Better Business Bureau Internet Retailer Inc 5000
CALL TO ORDER
(866) 554-4328
Hide
Visit eComfort on Facebook
View the eComfort Twitter Profile Page
Follow eComfort on Pinterest
View eComfort YouTube Channel