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Collection: Boiler 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.

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32 products

Zilmet ZHT400 105.7 Gal Hydronic Tank 3/4'' NPT Connection

Zilmet ZHT400 105.7 Gal Hydronic Tank 3/4'' NPT Connection

SKU #: ZILZHT400   |   MPN #: ZHT400

Regular price $1,663.56
Sale price $1,663.56 Regular price $0.00
MSRP: $3,649.68

Special Order

Zilmet ZHT500 132.1 Gal Hydronic Tank 1'' NPT Connection

Zilmet ZHT500 132.1 Gal Hydronic Tank 1'' NPT Connection

SKU #: ZILZHT500   |   MPN #: ZHT500

Regular price $2,045.77
Sale price $2,045.77 Regular price $0.00
MSRP: $4,603.18

Special Order

Zilmet ZHT600 158.5 Gal Hydronic Tank 1'' NPT Connection

Zilmet ZHT600 158.5 Gal Hydronic Tank 1'' NPT Connection

SKU #: ZILZHT600   |   MPN #: ZHT600

Regular price $2,255.54
Sale price $2,255.54 Regular price $0.00
MSRP: $5,351.01

Special Order

Zilmet ZHT300 79.3 Gal Hydronic Tank 3/4'' NPT Connection

Zilmet ZHT300 79.3 Gal Hydronic Tank 3/4'' NPT Connection

SKU #: ZILZHT300   |   MPN #: ZHT300

Regular price $1,295.06
Sale price $1,295.06 Regular price $0.00
MSRP: $2,649.59

Special Order

Zilmet ZHP350 105.7 Gal Vertical With Base 1-1/4'' NPT Connection Well Tank

Zilmet ZHP350 105.7 Gal Vertical With Base 1-1/4'' NPT Connection Well Tank

SKU #: ZILZHP350   |   MPN #: ZHP350

Regular price $1,511.66
Sale price $1,511.66 Regular price $0.00
MSRP: $6,386.62

Special Order

Zilmet ZHP302 ZHP302 Well Tank, 79.3 Gal Tank, 1-1/4 in Connection, NPT Connection

Zilmet ZHP302 ZHP302 Well Tank, 79.3 Gal Tank, 1-1/4 in Connection, NPT Connection

SKU #: ZILZHP302   |   MPN #: ZHP302

Regular price $1,197.15
Sale price $1,197.15 Regular price $0.00
MSRP: $4,732.46

Special Order

Zilmet ZHP351 119 Gal Well Tank, 1-1/4 in Connection, NPT Connection

Zilmet ZHP351 119 Gal Well Tank, 1-1/4 in Connection, NPT Connection

SKU #: ZILZHP351   |   MPN #: ZHP351

Regular price $1,690.31
Sale price $1,690.31 Regular price $0.00
MSRP: $7,878.03

Special Order

Zilmet ZHP200F Floor Mounted Thermal Expansion Tank 1" NPT Connection, Butyl/Carbon Steel/Stainless Steel, Epoxy Powder-Coated, Almond

Zilmet ZHP200F Floor Mounted Thermal Expansion Tank 1" NPT Connection, Butyl/Carbon Steel/Stainless Steel, Epoxy Powder-Coated, Almond

SKU #: ZILZHP200F   |   MPN #: ZHP200F

Regular price $290.64
Sale price $290.64 Regular price $0.00
MSRP: $1,180.82

Special Order

Zilmet ZHP202 21.1 Gal Hydro-Plus Thermal Expansion Tank, 1 in Connection, Carbon Steel, Epoxy, Almond

Zilmet ZHP202 21.1 Gal Hydro-Plus Thermal Expansion Tank, 1 in Connection, Carbon Steel, Epoxy, Almond

SKU #: ZILZHP202   |   MPN #: ZHP202

Regular price $307.71
Sale price $307.71 Regular price $0.00
MSRP: $1,503.59

Special Order

Zilmet ZFT24R 6.3 gal flat rectangular hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket Zilmet ZAF012MF 1/2'' MNPT X 1/2'' FNPT Activflo Solo

Zilmet ZFT24R 6.3 gal flat rectangular hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket Zilmet ZAF012MF 1/2'' MNPT X 1/2'' FNPT Activflo Solo

SKU #: ZILZFT24RZILZAF012MF   |   MPN #: ZFT24R & ZAF012MF

Regular price $347.13
Sale price $347.13 Regular price $0.00
MSRP: $1,528.91

Available in stock

Zilmet ZFT8R 2.1 gal flat rectangular hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket Zilmet ZAF012MF 1/2'' MNPT X 1/2'' FNPT Activflo Solo

Zilmet ZFT8R 2.1 gal flat rectangular hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket Zilmet ZAF012MF 1/2'' MNPT X 1/2'' FNPT Activflo Solo

SKU #: ZILZFT8RZILZAF012MF   |   MPN #: ZFT8R & ZAF012MF

Regular price $269.22
Sale price $269.22 Regular price $0.00
MSRP: $1,207.86

Special Order

Zilmet ZEP18 6.3 Gal Easy Pro Thermal Expansion Tank, 3/4 in Connection, NPT Connection, Carbon Steel, Almond

Zilmet ZEP18 6.3 Gal Easy Pro Thermal Expansion Tank, 3/4 in Connection, NPT Connection, Carbon Steel, Almond

SKU #: ZILZEP18   |   MPN #: ZEP18

Regular price From $127.34
Sale price From $127.34 Regular price $0.00
MSRP: $592.70

Available in stock

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.

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