What happens on water heater installation day in Florida?

<ul><li>A standard electric tank changeout using an existing location is typically completed in a few hours, not all day.</li><li>A hybrid heat-pump water heater installation or added work (pan, expansion tank, new shut-off) can take longer — your scope is confirmed during the intake.</li><li>The water supply to the unit is shut off for the installation, not the whole house for the whole day.</li><li>The DBPR-licensed plumbing contractor pulls the permit and schedules the inspection — you don't file anything.</li><li>At startup, the unit is filled, air is purged from the lines, the system is leak-checked, and the temperature is set to a safe 120°F before the crew leaves.</li><li>At closeout you receive the model and serial number, permit record, manufacturer warranty registration help, and the workmanship guarantee.</li></ul>

A typical Florida water heater replacement follows a consistent sequence:

1. Protect the work path — floor protection is laid from the door to the unit location. 2. Shut off and drain — the dedicated supply valve to the water heater is closed and the tank is drained. This is also when the electrical breaker for the unit is locked off. 3. Disconnect and remove — water lines are disconnected, electrical is capped, and the old tank is moved out. Haul-away is included; the old unit leaves with the crew. 4. Set the new unit — the new electric or hybrid heat-pump water heater is positioned and leveled. For heat-pump models, clearance around the unit and access to room air are confirmed at this step. 5. Connect water lines — new braided or copper supply connections are made with dielectric fittings where required to prevent galvanic corrosion. A new dedicated shut-off valve is installed if the existing one is past its useful life. 6. T&P relief and discharge piping — the temperature and pressure relief valve is connected to a code-compliant discharge pipe that terminates safely, per Florida Building Code. 7. Expansion tank — if the home has a closed plumbing system (a pressure-reducing valve or check valve on the supply), a thermal expansion tank is installed on the cold-water inlet. Florida code requires this in closed systems to protect the water heater and plumbing from thermal expansion pressure. 8. Condensate management (heat-pump models only) — hybrid heat-pump water heaters produce condensate as a byproduct of extracting heat from the air. The crew connects or confirms a drain path for that condensate — a floor drain, laundry standpipe, or dedicated condensate line. 9. Fill, purge, and leak-check — the supply valve is opened, the tank fills, and each fixture in the home is briefly opened to purge air from the lines. All connections are checked for drips. 10. Power up and temperature set — the breaker is restored, the unit energizes, and the thermostat is set to 120°F. The Department of Energy and most health guidance identify 120°F as the point that prevents most scalding risk while still being hot enough to inhibit bacterial growth.

A standard electric tank changeout — same location, existing electrical connection in good condition, no structural changes needed — is commonly completed in two to four hours. The crew arrives, removes the old unit, sets the new one, connects and tests, and is done within a half-day.

A hybrid heat-pump water heater installation takes longer. Heat-pump models are physically taller and require more clearance on all sides, the condensate line needs to be routed, and the startup sequence includes confirming the heat-pump mode is operating correctly. Budget for a longer install window when switching from a standard electric tank to a heat-pump unit.

Additional scope items — new shut-off valve, expansion tank, updated electrical connection, or a pan and floor drain — each add modest time. The intake captures these in advance so the scheduled window accounts for them; there are no mid-job discoveries that extend the day unexpectedly.

If you are also considering a full sizing review before committing to a replacement, the water heater size guide covers how tank capacity is matched to household demand.

Before the crew packs up, walk through a short closeout with them. Confirm the thermostat is set to 120°F and the unit is actively heating. Ask where the dedicated shut-off valve is — you should be able to point to it without help. Confirm that hot water is reaching fixtures and that the lines ran clear (no air spluttering at the faucet).

You should receive, either at closeout or shortly after: the permit record and inspection result, the model and serial number of the installed water heater, documentation of the manufacturer warranty registration, and the written workmanship guarantee. Keep these together — they are useful for maintenance scheduling, warranty claims, and any future home sale disclosure.