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.

129 products
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  • Zilmet ZHT35 9.2 Gal Hydronic Tank 3/4'' NPT Connection with ZAFL2234 ActiveFlo Lite Point of Use Water Conditioner
    MSRP: $1,104.94
    $262.22
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  • Zilmet ZHT35F 9.2 Gal Hydronic Tank 3/4'' NPT Connection with ZAFL2234 ActiveFlo Lite Point of Use Water Conditioner
    MSRP: $1,181.38
    $274.89
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  • Zilmet ZHT500 132.1 Gal Hydronic Tank 1'' NPT Connection with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $6,795.64
    $2,448.25
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  • Zilmet ZHT400 105.7 Gal Hydronic Tank 3/4'' NPT Connection with ZAF034 ActivFlo Water Conditioner
    MSRP: $5,934.86
    $1,980.67
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  • Zilmet ZS60V 15.9 Gal Vertical Stainless Steel Tank 1'' NPT Connection with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $5,960.06
    $1,869.17
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  • Zilmet ZSP12 3.2 Gal Solar Plus Tank 3/4'' NPT Connection with ZAFL2234 ActiveFlo Lite Point of Use Water Conditioner
    MSRP: $926.24
    $230.45
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  • Zilmet ZSP18 4.8 Gal Solar Plus Tank 3/4'' NPT Connection with ZAFL2234 ActiveFlo Lite Point of Use Water Conditioner
    MSRP: $984.36
    $259.58
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  • Zilmet ZSP300 79.3 Gal Solar Plus Tank 1'' NPT Connection with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $6,210.52
    $2,534.12
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  • Zilmet ZSP500 132.1 Gal Solar Plus Tank 1'' NPT Connection with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $7,194.68
    $3,205.24
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  • Zilmet ZHT105 27.7 Gal Cal Pro Hyrdronic Expansion Tank 3/4" NPT Connection
    MSRP: $949.88
    $369.74
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  • Zilmet ZHP250 52.8 Gal Hydro-Plus Thermal Expansion Tank, 1-1/4 in Connection, Carbon Steel, Epoxy, Almond
    MSRP: $3,280.96
    $871.65
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  • Zilmet ZSP600 158.5 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $4,880.66
    $2,872.63
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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.