Kansas City, MO Water Heater Codes and Requirements

In Kansas City, MO, we’ve been experiencing significant changes in our water infrastructure. With the Water Department replacing water meters and installing check valves, this affects how your water heater functions. Specifically, in Kansas City, MO, you should always install a thermal expansion tank—even for open-loop systems—due to the potential for pressure build-up each time your water heater kicks on.


Installation Guidelines:

  • Thermal Expansion Tank: Required for both closed-loop and now open-loop systems due to the potential for water meter upgrade that includes a check valve or backflow preventer.
  • Water Pressure: Should not exceed 80psi. If you’re experiencing higher pressure, consider installing a Pressure Regulating Valve (PRV).
  • Venting: Use approved materials and adhere to local codes. The vent connector should be at least 6 inches away from combustibles.
  • Piping: A minimum of 18 inches of copper should be used from the top of the water heater. No PEX or plastic within 6 inches of single wall venting.
  • Safety Measures: You should install smoke and carbon monoxide detectors near the mechanical room and bedrooms.

Additional Local Information:

For more details, you can reach out to Kansas City’s Water Services Department or refer to the city’s official website.

Permit Fee: $55
Annual Business License: $200


Water Quality in Kansas City, MO:

Kansas City has a decent water quality standard. However, because of the pressure build-up due to the new water meter installations, a thermal expansion tank is now more important than ever for the longevity of your water heater.


Water Heater Replacement in Kansas City, MO:

Water pressure can vary in Kansas City, MO, but because of the water meter updates, it’s crucial to install a PRV and thermal expansion tank to manage any potential pressure build-up effectively.

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Your Water Heater Specialist in Kansas City, MO:

Here at KC Water Heaters, we’re all about expertise and quality service. Our team, led by yours truly, Chase Thompson, and my diligent crew, are committed to giving you the best water heater service experience possible.

To schedule an appointment or for more information, reach out to us at kcwaterheater@gmail.com or give us a call at (913) 962-7000. We’re here to answer any questions or service needs you may have.