Columbus, OH Water Heater Plumbing Codes
Understanding Columbus, OH plumbing codes for water heaters. Get permit details and requirements for expansion tanks in Columbus.
Permits Required in Columbus
Any water heater replacement or new installation in Columbus requires a permit from the City of Columbus Department of Building and Zoning Services. A plumber must obtain this permit. The completed work will undergo a final inspection. This applies to all residential projects, even when replacing an existing unit with a similar model.
Expansion Tank Mandate
Ohio Plumbing Code mandates a thermal expansion tank for all closed-loop systems. Most homes in Columbus, especially those with a pressure regulator on the main water line, fall into this category. Without an expansion tank, the temperature and pressure relief (TPR) valve will eventually drip, and your water heater's lifespan will be significantly shortened. Installation typically costs between $150 and $300.
T&P Drain Pipe Specifications
The temperature and pressure relief valve must have a discharge pipe extending to within 6 inches of the floor or leading to an approved drain. This pipe must maintain the same diameter as the valve outlet, usually 3/4 inch. Approved materials include CPVC, copper, or PEX, and the discharge end must remain unthreaded. It is crucial there are no reductions in pipe size, no caps, and no upward turns in the piping.
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