Troubleshooting · Plumbing · Safety-Critical

    No Hot Water? Start Here.

    Cold or lukewarm water, sounds from the tank, water on the floor, or sulfur smell — read the safety warnings first. Florida law requires us to maintain your hot water, so submitting a request is the right move for almost any water-heater issue. This guide explains what's safe to check and what isn't.

    Estimated time to work through: ~5 minutes

    Read These Five Warnings Before Anything Else

    Never adjust the water heater thermostat yourself.

    The DOE / EPA recommended setting is 120°F. Below 120°F creates Legionella bacteria risk; above 130°F creates scalding risk (a child can be scalded in under 2 seconds at 150°F). The thermostat should already be at 120°F — visual check only, do not change without management approval.

    Electric water heater: only reset the breaker once.

    If the dedicated water-heater breaker (a double-pole breaker labeled "Water Heater") is tripped, reset it ONCE. If it trips again, that's a sign of a failed element or wiring fault — stop and submit a maintenance request. Do not open the access panel on the side of the tank. The heating element terminals carry 240V and can be fatal.

    Why This Happens

    Three Parts, One Tank

    A water heater is simpler than it looks. Cold water enters at the top, drops to the bottom through a tube (the "dip tube"), gets heated by either an electric element or a gas burner, and rises back to the top — where it leaves to your faucets and showers. If you have no hot water at all, the heater isn't heating (power problem, gas problem, or element problem). If you have lukewarm water, it's either heating partly (one of two elements is out, or the dip tube broke), or the thermostat is set too low. If hot water runs out fast, there's sediment taking up tank space (very common in Florida hard water).

    What you can safely check

    • The home's electrical breaker labeled "Water Heater" (electric)
    • The gas control valve position on the front of the tank (gas)
    • That nobody else is using hot water at the same time
    • Whether the thermostat is at 120°F (visual only)

    What requires a maintenance request

    • Adjusting the thermostat
    • Touching the access panels on the side of the tank
    • Anything inside the tank
    • Anything involving gas piping, valves, or pilot lights
    • Any leak from the tank or T&P valve
    • Any sound from the tank (popping, rumbling, hissing)
    Work Through These In Order

    The 5-Step Diagnostic Flow

    This guide has only 5 steps — far fewer than the dryer or A/C flows. That's intentional: water-heater work is overwhelmingly maintenance-side.

    1. 1

      Check the safety warnings (Section 2) first

      If anything from Section 2 applies, stop. Do not continue this flow. Submit an emergency request — or in the case of a gas smell, leave the home and call 9-1-1.

    2. 2

      Is anyone else using hot water?

      Multiple showers, laundry, dishwasher running simultaneously can exhaust a 40-gallon tank in 15–20 minutes. Wait 60 minutes with the system idle, then test.

    3. 3

      Check the electrical breaker (electric heaters only)

      Open the home's electrical panel. Look for a double-pole breaker labeled "Water Heater" or "WH." If it's tripped (handle midway between ON and OFF), flip it fully OFF, wait 10 seconds, then back ON. Wait 30 minutes for hot water to recover.

      If it trips again immediately — stop. Do not try a third time. Submit a maintenance request — repeated tripping is an electrical fault that needs a licensed tech.

    4. 4

      Check the gas valve position (gas heaters only)

      Look at the front of the tank. There's a control dial with positions like "ON," "PILOT," and "OFF." If the dial isn't at "ON," that's the problem.

      • If the dial is at "OFF" or "PILOT" and you do NOT smell gas, set it to ON and wait 30 minutes for hot water to recover.
      • If you smell ANY gas anywhere in the home — STOP. Section 2, Callout 1. Leave the home.

      Relighting a pilot light yourself is a judgment call — many Sea Dog properties prefer tenants don't, and we're happy to come do it. Submit a request if you'd rather have us handle it.

    5. 5

      Note what you see and submit a request

      If you've worked through Steps 2–4 and still have no hot water (or lukewarm only, or not enough), submit a maintenance request through the tenant portal. Include:

      • The exact symptom (no hot water at all / lukewarm only / runs out fast / leaking / popping sound / sulfur smell from water)
      • What you tried from this guide
      • Any sounds, water on floor, or smells you noticed
      • The age of the unit if visible (label on the side)

      The more detail you give us, the faster the right vendor with the right part arrives.

    By Symptom

    What's Likely Going On

    No hot water at all

    Electric: Step 3 (breaker). Gas: Step 4 (valve and pilot). If both check out and it's still cold — maintenance request. Most common cause is a failed element (electric) or thermocouple (gas).

    Lukewarm water only, never hot

    Almost always one of two heating elements failed (electric, since most have an upper and lower element) or a broken dip tube (cold water mixing at the top instead of going to the bottom to be heated). Both require a tech. Submit a request.

    Hot water runs out fast

    Used to last longer? Almost always sediment buildup in the tank — Florida hard water deposits minerals on the tank bottom, reducing usable capacity. Tank flushing is a landlord-scheduled maintenance task; submit a request and we'll work it into the schedule.

    Water heater is leaking

    See Section 2 Callout 3. Shut off cold-water inlet, kill power/gas, place towels. Submit an emergency request. A leaking tank is typically end-of-life and needs replacement — don't continue to use hot water.

    Sulfur / rotten-egg smell

    Important distinction:

    • Smell in the water (only when hot tap runs, smells like sulfur in the water itself) — anode rod reacting with sulfur bacteria. Not dangerous. Submit a routine maintenance request.
    • Smell in the air around the tank (not in the water, smelled before you turned anything on) — possible gas leak. Section 2 Callout 1. Leave the home, call 9-1-1.
    The Line

    Stop And Submit A Request If…

    Submit a maintenance request for any of these:

    • You worked through Steps 2–4 and still have no hot water
    • The breaker keeps tripping after one reset
    • Pilot light won't stay lit (gas)
    • Water on the floor under or around the tank
    • T&P valve dripping or discharging
    • Tank making popping, rumbling, or hissing sounds
    • Sulfur smell in the water
    • Lukewarm-only output even when nobody else is using hot water
    • Hot water that runs out much faster than it used to
    • The tank is over 10 years old (visible on the manufacturer label)
    • Visible rust streaks on the tank

    Submit a maintenance request with photos

    Tenant maintenance line

    9-1-1 for emergencies — call 9-1-1 first.

    Your Protection

    Hot Water Is Required by Florida Law

    Florida Statute 83.51 obligates landlords to maintain residential properties in good repair, including running water and hot water at all times. This is not discretionary. If you've reported a hot-water problem and we haven't responded promptly, Florida Statute 83.56 sets out tenant remedies (typically requiring a written 7-day notice before withholding rent or terminating).

    Sea Dog treats water-heater outages as urgent maintenance. Submit through the tenant portal and we will respond quickly — most outages dispatched within standard SLA windows, emergency conditions same day.

    Hard water + sediment

    Florida hard water deposits minerals on the tank bottom faster than the national average. That sediment takes up tank capacity (you get less hot water for the same tank size) and produces popping sounds as the burner or element heats water trapped under the sediment layer. Flushing the tank periodically is a landlord task; tenants who hear popping should report it.

    Hurricane prep

    Before a tropical storm or hurricane:

    • Electric heaters: turn off the dedicated breaker
    • Gas heaters: set the gas control valve to OFF
    • Both: shut off the cold-water inlet at the top of the tank if you're evacuating

    This prevents storm-related power surges or contaminated water-supply damage. If floodwater touches the unit, do not power it back on — submit a request and the unit must be inspected before reuse.

    Keep It Working

    Five Habits That Prevent Water-Heater Surprises

    1. 1

      Know where the heater is, where the shutoff valve is, and where the breaker (or gas valve) is. Note this when you move in.

    2. 2

      Don't run all your hot water at once. Stagger showers, laundry, and dishwasher use, especially on smaller tanks.

    3. 3

      Report popping, rumbling, or sulfur smell within 24 hours of noticing. Early reports prevent emergency repairs.

    4. 4

      Visually check the tank monthly for rust streaks, moisture on the floor, or anything that wasn't there before.

    5. 5

      Don't store anything against the tank. Flammable materials especially must stay clear of gas heaters per code.

    We've Got This — Submit A Request

    Hot water is on us under Florida law and under your lease. Tell us what you're seeing and we'll dispatch a vetted plumber with the right parts.

    Smell gas, see smoke or flame, or have water flooding from the tank? Call 9-1-1 first. Then contact Sea Dog once everyone is safe.

    More From The Library

    Browse all troubleshooting guides

    Self-help guides for tenants, by Sea Dog.

    What This Guide Is Built On

    Sea Dog's guides are grounded in authoritative trade and safety sources. For water-heater troubleshooting we draw on Rheem, A.O. Smith, Bradford White, Watts (T&P valves), InterNACHI, Florida Statute 83.51 and 83.56, the U.S. Department of Energy's 120°F guidance at energy.gov, and CDC/CPSC scalding research.

    This guide is educational and does not modify your lease. It is not professional plumbing, gas, or electrical advice. If a step does not resolve your issue, or if you have any safety concern, stop and submit a maintenance request through the tenant portal or contact Sea Dog at the tenant maintenance line. In any conflict between this guide and your signed lease or applicable Florida law (Florida Statutes Chapter 83), your lease and Florida law control.