Water heater burst in the garage in Florida.

Water heater failures in Florida fall into four main categories: (1) Tank rupture — corrosion from Florida's hard water (especially in Apopka, Sanford, and Orange County well-water areas) eats through the tank wall from the inside; a rusted-through tank releases its entire 40–80 gallon capacity instantly; (2) T&P (temperature and pressure relief) valve discharge — if the water pressure in the home is too high or the thermostat malfunctions, the T&P valve opens and discharges hot water onto the floor; this is a designed safety feature but creates water damage when it activates; (3) Supply line failure — the hot and cold supply lines connecting to the water heater can fail at the flex connector, threaded fitting, or ball valve; (4) Bottom seal failure on older tanks — older tank water heaters develop a slow drip from the drain valve or bottom anode seal that becomes a steady leak over time. Florida's hard water accelerates all failure modes — water heaters in Orange, Seminole, and Lake County typically fail at 8–12 years rather than the national average of 12–15 years.

Yes — a sudden and accidental water heater tank rupture or supply line failure is covered by Florida HO-3 homeowners insurance as a sudden water loss. Coverage includes the resulting water damage to the garage floor (concrete is not typically damaged but contents and adjacent drywall are), adjacent laundry room, hallway, or interior rooms affected by water spread. The water heater itself may or may not be covered depending on whether the failure is classified as sudden (covered) or gradual deterioration (excluded). Key distinctions: (1) Tank rupture from internal corrosion — typically covered as sudden loss when the failure is immediate; (2) Slow drip from drain valve that was discovered after months — likely excluded as gradual/maintenance failure; (3) T&P valve discharge — covered as sudden loss if caused by a pressure or temperature event; (4) Supply line failure — covered as sudden loss. Citizens Property Insurance caps mold coverage at $10,000 regardless of water damage scope — important for garage water heater failures in finished areas adjacent to the garage. Report the claim the same day it's discovered.

A water heater tank rupture in a Florida garage affects the following areas: (1) Garage concrete slab — concrete absorbs water and holds moisture; even though concrete itself is not structurally damaged by water, any baseboards, drywall, or framing along the garage walls will absorb moisture from the wet slab; (2) Adjacent laundry room or interior door threshold — water spreads from the garage floor under the door threshold into interior flooring (tile, LVP, or hardwood) in adjacent laundry rooms, hallways, or mudrooms; (3) Drywall on garage interior walls — if the garage has finished drywall on interior walls (shared with the living space), the wet slab wicks moisture into the bottom 12–18 inches of drywall; (4) Mechanical equipment — water heaters are often located near the HVAC air handler; if the water heater and air handler share a utility closet, the air handler base and nearby ductwork can be affected; (5) Contents — stored items on the garage floor (cardboard boxes, appliances, furniture) become Category 1 contents damage covered by the policy.

The two most common water heater flood types behave differently and produce different damage profiles: Tank rupture — the entire tank drains at once; a 50-gallon tank releases its full contents in 5–15 minutes depending on the size of the breach; the flood is immediate and obvious when the homeowner walks into the garage; all water is released from a single point at the base of the tank; the tank itself is typically beyond repair and must be replaced. Supply line failure — the water continues to flow at full supply pressure until the shutoff valve is found and closed; a supply line failure that runs for 30–60 minutes before discovery can release 200–400 gallons; the flood spreads further from the water heater because the supply pressure drives a continuous high-volume flow; affected areas are larger than a tank rupture. Both are sudden losses covered by Florida HO-3, but a supply line failure typically produces more water damage than a tank rupture of the same discovery timeline because it runs at full supply pressure rather than draining gravity-fed.

Immediate steps after a water heater burst in Florida: (1) Shut off the cold water supply valve to the water heater — the cold supply valve is typically located directly above the water heater on the incoming cold water line; turn it clockwise to close; if you can't find it or it won't close, shut off the main water supply to the house; (2) Turn off the water heater's power or gas — for electric water heaters, turn off the circuit breaker labeled 'water heater'; for gas water heaters, turn the gas valve to the OFF position; (3) Do not attempt to drain the tank while it is still pressurized and hot — wait 30–60 minutes before attaching a hose to the drain valve; (4) Call CFDR at 321-420-7274 — mold begins on wet concrete and adjacent drywall within 24–48 hours; extraction and drying should begin the same day; (5) Document with photos and video — photograph the water heater, the supply line or tank failure point, the wet floor, and all affected areas before cleanup; this is the insurance documentation of the loss event; (6) Call your insurance carrier the same day — report the claim and ask your carrier to open a file; late reporting can be used to argue failure to mitigate.