Expansion Tanks

Discover a range of expansion tanks designed to fit your specific boiler needs, ensuring optimal performance and efficiency. We proudly carry the best brands on the market including Watts and Zilmet. Our handpicked expansion tanks combine quality and affordability, ensuring that your boiler system runs smoothly.

127 products
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  • Zilmet ZSP500 132.1 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $4,264.98
    $2,692.47
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  • Zilmet ZSP400 105.7 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $3,881.80
    $2,402.58
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  • Zilmet ZHT700 184.9 Gal Hydronic Tank 1'' NPT Connection
    MSRP: $5,996.60
    $2,427.91
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  • Zilmet ZTTA-42 22 Gal Asme Thermal Expansion Tank With Fixed Diaphragm 1" NPT Connection
    MSRP: $2,469.60
    $2,075.36
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  • Zilmet ZS100H 26.4 Gal Horizontal Stainless Steel Tank 1'' NPT Connection
    MSRP: $4,670.04
    $2,012.03
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  • Zilmet ZS100V 26.4 Gal Vertical Stainless Steel Tank 1'' NPT Connection
    MSRP: $4,645.54
    $2,001.80
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  • Zilmet ZSP300 79.3 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $3,280.82
    $1,987.07
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  • Zilmet ZHT600 158.5 Gal Hydronic Tank 1'' NPT Connection
    MSRP: $4,494.00
    $2,009.01
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  • Zilmet ZHT500 132.1 Gal Hydronic Tank 1'' NPT Connection
    MSRP: $3,865.94
    $1,780.78
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  • Zilmet ZHP351 119 Gal Well Tank, 1-1/4 in Connection, NPT Connection
    MSRP: $7,425.80
    $1,587.90
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  • Zilmet ZSP250 66 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $2,476.96
    $1,569.50
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  • Zilmet ZHT400 105.7 Gal Hydronic Tank 3/4'' NPT Connection
    MSRP: $3,065.16
    $1,444.33
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Premium Boiler for Maximum Comfort

Welcome to Plumbing Deals, your source for high-quality expansion tanks designed to enhance the efficiency and lifespan of your boiler system. We seamlessly blend affordability with top-tier quality. We carry some of the best performing names in the industry, including Watts and Zilmet. Whether you're a homeowner or a seasoned contractor, our carefully selected products are here to ensure your boiler operates at its best, without breaking the bank. Discover a range of expansion tanks designed to fit your specific boiler needs, ensuring optimal performance and efficiency.

Whether you're in the process of upgrading your existing boiler system, replacing outdated equipment, or embarking on a new project, Plumbing Deals is here to provide tailored solutions to meet your specific needs. Elevate your boiler's performance to exceptional levels with our wide array of products and expertise. Delve into our carefully curated expansion tank selection, where you can find not only quality products but also amazing deals that fit your requirements. Our goal is to ensure that your boiler operates efficiently, your comfort remains at optimal levels, and your budget stays intact. Explore our diverse categories today, and together, let's transform every heating season into a truly satisfying and efficient experience.