Residential Water Heater Expansion Tanks

Residential Water Heater Expansion Tanks

A. O. Smith’s residential water heater expansion tanks prevent your home’s water pressure from getting too high and damaging your plumbing from thermal expansion.
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5-Gallon Hydronic Expansion Tank
5-Gallon Hydronic Expansion Tank Model PMET 5
  • Hydronic Expansion Tank
  • In-Line
  • 1-Year Limited Warranty
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7-Gallon Hydronic Expansion Tank
7-Gallon Hydronic Expansion Tank Model PMET 7
  • Hydronic Expansion Tank
  • In-Line
  • 1-Year Limited Warranty
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14-Gallon Hydronic Expansion Tank
14-Gallon Hydronic Expansion Tank Model PMET 14
  • Hydronic Expansion Tank
  • In-Line
  • 1-Year Limited Warranty
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2-Gallon Hydronic Expansion Tank
2-Gallon Hydronic Expansion Tank Model PMET 2
  • Hydronic Expansion Tank
  • In-Line
  • 1-Year Limited Warranty
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10-Gallon Potable Water Expansion Tank
10-Gallon Potable Water Expansion Tank Model PMC 10
  • Potable Expansion Tank
  • In-Line
  • 5-Year Limited Warranty
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TW Series Expansion Tank for Potable Water
TW Series Expansion Tank for Potable Water
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A. O. Smith water heaters are available through your local plumbing professional.
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