Why Expansion Tanks are Essential on the Cold Water Side

Learn why expansion tanks are crucial in protecting your plumbing system by managing pressure in your home.

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Expansion tanks are installed on the cold water supply line before it enters the water heater primarily to protect your home's plumbing system. When water is heated, it expands, increasing pressure within the system. By installing the expansion tank on the cold side, it absorbs this excess pressure, preventing potential damage to the water heater, pipes, and fixtures. This strategic placement ensures the tank functions efficiently, maintaining a balanced pressure system and prolonging the lifespan of the plumbing components.

FAQs & Answers

  1. What is the purpose of an expansion tank? The purpose of an expansion tank is to absorb excess pressure in the plumbing system when water is heated, preventing potential damage to the water heater, pipes, and fixtures.
  2. Where should an expansion tank be installed? An expansion tank should be installed on the cold water supply line before it enters the water heater, ensuring optimal functionality and pressure management.
  3. How does temperature affect water pressure in plumbing systems? As water is heated, it expands, which increases pressure within the plumbing system. An expansion tank helps to manage this pressure, preventing damage.
  4. Can a home function without an expansion tank? While a home can function without an expansion tank, it increases the risk of pressure-related damage to plumbing components due to thermal expansion, which can lead to costly repairs.

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