Do I Need a Permit for a Water Heater Replacement?
Usually yes — the replacement (the 50-gallon — the gas's; the plumbing) needs the plumbing/mechanical permit (the TPR's — the inspected; the required), even where (the like-for-like — the exempt's — the sometimes). The TPR (the discharge's — the 6-inch; the gravity's), the expansion (the tank's — the 2-gallon; the closed's), and the vent (the 4-inch — the Category I's; the inspected). The permit's — the heater's safety.
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When permits are needed
The gas (the 50-gallon — the replaced; the permitted), the electric (the 50-gallon — the like-for-like's; the exempt's — the sometimes), the tankless (the 199k BTU — the gas's; the permitted), the relocated (the moved — the always; the vented), and the 75-gallon (the commercial's — the permitted; the always).
The installation's code
The TPR (the 6-inch — the discharge; the gravity's — the visible), the expansion (the 2-gallon — the closed's; the 150 psi's), the vent (the 4-inch — the Category I's; the 6-inch's — the clearance), the pan (the 2-inch — the drained; the 2nd floor's), the seismic (the 2-strap's — the CA's; the 4-inch's), and the 18-inch (the garage's — the ignition; the FVIR's).
Cost and inspection
The $100-$300 (the permit's — the plumbing's), the $1,500-$3,500+ (the replacement's — the 50-gallon; the tankless' — the $4,000), and the inspection (the final's — the TPR's; the vent's). The TPR's — the explosion's prevention; the straps' — the earthquake's.
The bottom line
Gas water heater replacements need plumbing/mechanical permits (TPR to 6-in gravity discharge, expansion tank on closed systems, 2 seismic straps in CA, 18-in garage elevation) — like-for-like electric is sometimes exempt; budget $100-$300.
Torch Engineering PLLC · (480) 490-0064 · info@torchengineering.com — PE stamping backed by Apex Grid Engineering.