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Water Heater Installation Certificate

A Water Heater Installation Certificate documents the installation of a water heater, including T&P relief valve, discharge piping, expansion tank, seismic strapping (where required), and code compliance. It applies to gas, electric, heat pump, and solar water heaters.

UPC/IPC, IFGC (for gas units), NEC (for electric units), state/local codes, manufacturer instructionsValid: One-off (no expiry)

What it covers

  • Unit specifications and fuel type
  • T&P relief valve and discharge pipe
  • Expansion tank installation
  • Seismic strapping where required
  • Gas venting or electrical connections
  • Code compliance verification

Who needs a Water Heater Cert?

Homeowners
Plumbers
Property managers
Building inspectors

Create your Water Heater Cert with CertBox

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Frequently asked questions about Water Heater Cert

Do I need a permit to replace a water heater?
In most US jurisdictions, yes. Water heater replacement typically requires a plumbing or mechanical permit, even for a like-for-like swap. The permit ensures proper installation of safety devices like the T&P relief valve.
Is an expansion tank required?
An expansion tank is required wherever a closed plumbing system exists (i.e., where a check valve, pressure regulator, or backflow preventer prevents thermal expansion from relieving back to the main). Many modern installations require one.

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