Do I Need a Permit to Replace a Water Heater in Florida?

Florida-specific rules

Adopted code: Florida Building Code, 8th Edition (2023); the Florida Building Commission states its effective date is December 31, 2023. ADOPTION IS STATEWIDE AND AUTOMATIC, NOT LOCAL: s. 553.73(6), F.S. provides that "The initial adoption of, and any subsequent update or amendment to, the Florida Building Code by the commission is deemed adopted for use statewide without adoptions by local government." The Code is derived from the International Building Code as a base code with Florida-specific amendments. The Commission must update it on a three-year cycle and 2026 Update materials are already being published, so confirm the edition in force. LOCAL VARIATION RUNS ONE WAY ONLY: s. 553.73, F.S. provides that "Local amendments must be more stringent than the minimum standards described in this section and must be transmitted to the commission within 30 days after enactment" - though DBPR's own guidance states the filing requirement differently, as submitted "at least 30 days prior to being enforced". The two official sources give different deadlines and neither is restated here as the other. A STATEWIDE CARVE-OUT APPLIES TO RESIDENTIAL FIRE SPRINKLERS: IRC section R313 sprinkler mandates may not be incorporated into the Code or adopted as a local amendment, except for a local government whose sprinkler ordinance has been in effect since January 1, 2010. THE CODE THAT GOVERNS THIS APPLIANCE IS NAMED BY STATUTE AND IT IS NOT THE ONE THE REST OF THIS GUIDE IS ABOUT. Section 553.909(1), Florida Statutes: "The Florida Energy Efficiency Code for Building Construction shall set the minimum requirements for commercial or residential swimming pool pumps, swimming pool water heaters, and water heaters used to heat potable water. The code shall further establish the minimum acceptable standby loss for electric water heaters and the minimum recovery efficiency and standby loss for water heaters fueled by natural gas or liquefied petroleum gas." SO THE PERFORMANCE FLOOR FOR YOUR UNIT SITS IN THE ENERGY CODE, A SEPARATE INSTRUMENT FROM THE BUILDING CODE VOLUME THAT GOVERNS THE INSTALLATION, and the two carry their own editions and their own effective dates. NOTE ALSO THAT THE STATUTE SPLITS ELECTRIC FROM FUEL-FIRED: standby loss is the measure for electric, while gas and liquefied petroleum units are measured on BOTH recovery efficiency AND standby loss, so the two fuels are not being held to one number. AND A CAUTION THE STATUTE RAISES ITSELF — subsection (7): "If the provisions of this section are preempted in part by federal standards, those provisions not preempted shall apply." Federal appliance standards are live in this area, so the applicable floor may not be the state one, and the statute is explicit that it yields where preempted. ONE ABSENCE WORTH STATING: NOTHING ON THE PAGES READ FOR THIS RECORD ADDRESSES REPLACING AN EXISTING APPLIANCE as distinct from a new installation. Whether a like-for-like swap must meet the current energy code is therefore not answered here, and it is the first thing to ask.

Sources: Section 553.73, Florida Statutes (2025) - Florida Building Code, Florida Building Commission - official site (current code edition and effective date), Florida DBPR - Building Codes and Standards, Frequently Asked Questions