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 ZS18 4.8 gal in-line: Stainless steel expansion tank with 3/4": Stainless steel NPT connection
    MSRP: $960.68
    $427.90
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  • Zilmet ZFT8C 2.1 gal flat round hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket
    MSRP: $243.58
    $101.77
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  • Zilmet ZFT24R 6.3 gal flat rectangular hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket
    MSRP: $560.48
    $210.14
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  • Zilmet ZFT18R 4.8 gal flat rectangular hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket
    MSRP: $440.64
    $161.14
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  • Zilmet ZFT18C 4.8 gal flat round hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket
    MSRP: $279.48
    $112.56
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  • Zilmet ZEP5 2.1 gal In-line thermal expansion tank with 3/4" Stainless steel NPT connection
    MSRP: $302.40
    $59.37
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  • Zilmet ZEP12 4.8 gal In-line thermal expansion tank with 3/4" Stainless steel NPT connection
    MSRP: $384.40
    $80.18
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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Whether you're in the process of upgrading your existing boiler system, replacing outdated equipment, or embarking on a new project, Plumbing Deals is here to provide tailored solutions to meet your specific needs.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.