Top 7 Best expansion tank for water heater (2022)

1. Watts ETX-30 Non-Potable Water Expansion Tank 1/2 in MNPT Connection, 4.5 gallon, Gray

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• This non-portable water expansion tank is for closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief sett of the relief valve
• The carbon steel tank is pre-charged at 12 psi, has a 4.5 gallon volume, and features a durable expansion membrane preventing minimizes loss of the air change and ensures long and trouble-free life for the system
• Made of carbon steel with epoxy finish, mounts to supply piping, with 1/2 inch MNPT system connection and .302-32 inch charging valve connection for on-site charging of the tank
• Maximum pressure 60 psi and can be used in residential or commercial hydronic heating systems
• Use in tandem with your hot water heater to absorb increased water volume ensuring long and trouble-free life for the system

2. Eastman 86288 Universal Stainless Steel Water Heater Expansion Tank Mounting Bracket, 5 Gallon or 13 inches, Steel

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• ✅DESIGN- Universal kit for mounting water heater expansion tanks to the wall. Great for PEX installations that cannot support the weight of the expansion tank.
• ✅QUALITY- Bracket made of galvanized steel, bands and screws constructed of stainless steel that provides strength and durability.
• ✅FUNCTIONALITY- Reduces strain on pipes by securing the thermal expansion tank to the wall. Works with water heater thermal expansion tanks up to 5 gallons in size or 13 inches in diameter.
• ✅EASY INSTALLATION- Quick-release stainless steel bands allow for fast and easy installation.
• ✅COMPLETE- Includes mounting bracket, two stainless steel quick-clamp bands and two mounting screws.

3. PROFLO PFXT5I PROFLO PFXT5I 2.1 Gallon Thermal Expansion Tank

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• Constructed of steel ensuring durability and dependability
• High quality finish will resist rust and corrosion through everyday use
• Capacity: 2.1 gallons
• Width: 8″
• Depth: 8″

4. AMTROL ST-5 Thermal Expansion Tank

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• Accepts expanded water caused by thermal expansion
• Returns water to the system when hot water is used
• Prevents the relief valve from going off
• Inline thermal expansion tank
• Accepts expanded water caused by thermal expansion
• Returns water to the system when hot water is used
• Prevents dripping faucets, intermittent toilet fill and pressure relief valve discharge
• Protects water heater, appliances and fixtures

5. Permaspan PSC-2X 2 Gallon Potable Water Expansion Tank

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6. Amtrol ST-12 Thermal Expansion Tank

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• Eliminates the waste of energy and water, thus saving money
• Prevents the relief valve from going off
• Protects the water heater and plumbing fixtures from premauture failure
• Eliminates the waste of energy and water, thus saving money
• Prevents a dangerous pressure build-up in the system

7. HIGHCRAFT GUU7 Thermal Expansion Tank for Hot Water Heater Carbon Steel Almond Color Holds 2.1 Gal, 2.1 Gallons

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• Protects Your Water Heater; Prevents Dangerous Pressure Build up; Eliminates Potential Leak Path
• Features a Solid Carbon Steel Construction with an Exclusive Polypropylene Liner, MIG Welding, and External Baked Epoxy-Polyester Coating for Superior Performance
• Each Tank is Factory Leak Tested and NSF61 Certified
• Max Operating Pressure 150 PSI; Temperature 210°F
• Saves Energy and Water

8. Zilmet ZEP-1 Expansion Tank for Tankless Water Heater

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9. WATTS WATER TECHNOLOGIES GIDDS-1030401 Potable Water Expansion Tank, Model #Plt-5, Stainless Steel Nipple, 2.1 Gallon, Lead Free

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• This product is highly durable
• This product adds a great value
• This product is manufactured in United states

10. PROFLO PFXT5 PROFLO PFXT5 2 Gallon Thermal Expansion Tank

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• Constructed of steel ensuring durability and dependability
• High quality finish will resist rust and corrosion through everyday use
• Capacity: 2 gallons
• Width: 8″
• Depth: 8″