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 ZSP105 27.7 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $911.92
    $502.49
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  • Zilmet ZHT150 39.6 Gal Hydronic Tank 3/4'' NPT Connection
    MSRP: $1,206.50
    $454.53
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  • Zilmet VSG105 Temperature Reducing Pre-Vessel 27.7 Gal Solar Expansion Tank, Two 1'' NPT
    MSRP: $695.06
    $394.93
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  • Zilmet ZSP80 21.1 Gal Solar Plus Tank 1'' NPT Connection
    MSRP: $619.92
    $327.79
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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
    $277.63
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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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  • Zilmet ZSP50 13.2 Gal Solar Plus Tank 3/4'' NPT Connection With Feet
    MSRP: $484.32
    $261.49
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  • Zilmet ZHP200F Floor Mounted Thermal Expansion Tank 1" NPT Connection, Butyl/Carbon Steel/Stainless Steel, Epoxy Powder-Coated, Almond
    MSRP: $1,091.84
    $256.79
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  • Zilmet ZHT80 21.1 Gal Cal Pro Hydronic Expansion Tank 3/4" Connection
    MSRP: $611.36
    $246.68
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  • Zilmet ZHP200BH 13.2 Gal Horizontal With Pump Bracket 1'' NPT Connection Well Tank
    MSRP: $1,270.92
    $246.32
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  • Zilmet ZSP35 9.2 Gal Solar Plus Tank 3/4'' NPT Connection With Feet
    MSRP: $405.34
    $232.89
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  • Zilmet ZS8 Inox Pro ZS8 Expansion Tank, 2.1 Gal Capacity, 3/4 in Connection, NPT Connection, 304 Stainless Steel
    MSRP: $502.00
    $231.42
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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.