When was a gas water heater first required to be elevated 18 inches above a garage floor?
Thursday, June 21, 2018
The requirement to elevate a water heater so that the source of ignition is not less than 18 inches above the garage floor first appeared in the Uniform Plumbing Code (UPC) and Uniform Mechanical Code (UMC) in 1976. All editions of the International Residential Code, which began in 2000, also have the requirement.
Here’s how it appears in the Residential Edition of the 2014 Florida Building Code (FBC):
All gas water heaters manufactured since late 2002, when the Consumer Products Safety Commission (CPSC) mandated that all water heaters be Flammable Vapor Ignition Resistant (FVIR), qualify for the exemption. It will be marked on the data plate on the side of the water heater that it is FVIR compliant.
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