Expansion Tanks

Discover a range of expansion tanks designed to fit your specific water heater needs, ensuring optimal performance and efficiency. We carry the highest quality brands at the most affordable prices available.

78 products
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  • Zilmet ZS24H 6.3 Gal Horizontal Stainless Steel Tank 1'' NPT Connection
    MSRP: $1,552.14
    $681.91
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  • Zilmet ZS24V 6.3 Gal Vertical Stainless Steel Tank 1'' NPT Connection
    MSRP: $1,439.70
    $630.85
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  • Zilmet ZHT200 52.8 Gal Hydronic Tank 3/4'' NPT Connection
    MSRP: $1,497.46
    $554.79
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  • Zilmet ZHP204 Floor Mounted Thermal Expansion Tank, Butyl/Carbon Steel/Stainless Steel, Epoxy Powder-Coated, Almond
    MSRP: $2,718.24
    $513.84
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  • Zilmet ZSP105 27.7 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $911.92
    $502.48
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  • Zilmet ZHT150 39.6 Gal Hydronic Tank 3/4'' NPT Connection
    MSRP: $1,206.50
    $454.52
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  • Zilmet VSG105 Temperature Reducing Pre-Vessel 27.7 Gal Solar Expansion Tank, Two 1'' NPT
    MSRP: $695.06
    $394.94
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  • Zilmet ZHP203 Hydro-Plus Thermal Expansion Tank, 27.7 Gal Capacity, 1-1/4 in Connection, Carbon Steel, Epoxy, Almond
    MSRP: $1,935.20
    $382.15
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  • Zilmet ZSP80 21.1 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $619.92
    $327.78
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  • Zilmet ZHP202BH Hydro Plus Specialty Tank With Pump Bracket, 21.1 Gal Capacity, 1 in Connection, NPT Connection, Almond
    MSRP: $1,523.08
    $299.06
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  • Zilmet ZHP202 21.1 Gal Hydro-Plus Thermal Expansion Tank, 1 in Connection, Carbon Steel, Epoxy, Almond
    MSRP: $1,417.28
    $277.64
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  • Zilmet ZS12 3.2 Gal Stainless Steel Tank 3/4'' NPT Connection - Nsf61 Certified
    MSRP: $567.30
    $262.09
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Increase Your Water Heater Efficiency

Whether you're upgrading your water heater or replacing an old hydronic tank, Plumbing Deals has the solutions you need. Our handpicked expansion tanks combine quality, efficiency, and affordability, ensuring that your water heater operates at its best. Our selection includes hydronic, vertical, horizontal, and floor mounted tanks.

Let's make your water heater's performance exceptional! Dive into our expansion tank selection, seize fantastic deals, and let our products keep your water heater efficient, your comfort levels high, and your budget intact. Start browsing our categories now, and let's make every shower, bath, and chore a satisfying and efficient experience.