Check the reviewed permit path.

Seattle

Boiler, pressure vessel, plumbing, electrical, or mechanical permit check for water heater work

SDCI's boiler and pressure vessel permit page covers installing boilers and pressure vessels and notes Seattle Energy Code restrictions for electric resistance and fossil fuel-fired service water heating equipment in many buildings. Because water heater scopes can involve pressure-vessel, plumbing, electrical, mechanical, fuel, venting, or heat-pump equipment, Seattle water heater work should be confirmed with SDCI before installation and routed to the required permit type for the actual equipment.