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 ZHP200BH 13.2 Gal Horizontal With Pump Bracket 1'' NPT Connection Well Tank with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $4,200.62
    $789.50
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  • Zilmet ZHT105 27.7 Gal Cal Pro Hyrdronic Expansion Tank 3/4" NPT Connection with ZAFL2234 ActiveFlo Lite Point of Use Water Conditioner
    MSRP: $1,701.76
    $486.05
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  • Zilmet ZHP202 21.1 Gal Hydro-Plus Thermal Expansion Tank, 1 in Connection, Carbon Steel, Epoxy, Almond with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $4,346.98
    $820.42
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  • Zilmet ZHT150 39.6 Gal Hydronic Tank 3/4'' NPT Connection with ZAF034 ActivFlo Water Conditioner
    MSRP: $4,076.20
    $985.97
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  • Zilmet ZHT200 52.8 Gal Hydronic Tank 3/4'' NPT Connection with ZAF034 ActivFlo Water Conditioner
    MSRP: $4,367.16
    $1,086.13
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  • Zilmet ZHT18-30 4.8 Gal Capacity Cal Pro ZHT18-30 Hydronic Expansion Tank, 1/2 in Connection, NPT Connection, Carbon Steel Zilmet ZAF012MF 1/2'' MNPT X 1/2'' FNPT Activflo Solo
    MSRP: $1,068.48
    $245.09
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  • Zilmet ZTTA-42 22 Gal Asme Thermal Expansion Tank With Fixed Diaphragm 1" NPT Connection with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $5,399.30
    $2,621.46
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  • Zilmet ZSP50 13.2 Gal Solar Plus Tank 3/4'' NPT Connection With Feet with ZAFL2234 ActiveFlo Lite Point of Use Water Conditioner
    MSRP: $1,236.20
    $378.70
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  • Zilmet ZSP80 21.1 Gal Solar Plus Tank 1'' NPT Connection with ZAF010 ActivFlo Whole House Water Conditioner
    MSRP: $3,549.62
    $871.52
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  • Zilmet ZHT24-60 6.3 Gal Cal Pro Hydronic Expansion Tank, 1/2 in Connection, NPT Connection, Carbon Steel Zilmet ZAF012MF 1/2'' MNPT X 1/2'' FNPT Activflo Solo
    MSRP: $1,199.52
    $288.72
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  • Zilmet ZHT300 79.3 Gal Hydronic Tank 3/4'' NPT Connection with ZAF034 ActivFlo Water Conditioner
    MSRP: $5,094.94
    $1,664.59
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  • Zilmet ZHT250 66 Gal Hydronic Tank 3/4'' NPT Connection with ZAF034 ActivFlo Water Conditioner
    MSRP: $4,609.08
    $1,449.17
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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.