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Technician adjusting the gas control on a residential water heater in a Rochester MN utility room

24/7 Emergency Water Heater Repair in Rochester, MN

No hot water on a Minnesota winter morning is an emergency. We repair gas, electric and tankless water heaters in Rochester homes, 24 hours a day.

Gas, electric and tankless water heater repair

Each type fails in its own way. Here is what we find most often in Rochester homes.

Lifespan 8 to 12 years

Gas tank water heaters

  • Pilot light will not stay lit (thermocouple)
  • Gas control valve failure
  • Burner clogged with soot
  • Flue draft problems
Lifespan 10 to 15 years

Electric tank water heaters

  • Upper or lower heating element burned out
  • Thermostat stuck open or closed
  • Tripped high limit reset
  • Loose wiring at the element
Lifespan about 20 years

Tankless water heaters

  • Scale in the heat exchanger
  • Ignition or flame failure codes
  • Inlet filter screen clogged
  • Venting or condensate errors

6 signs your water heater needs service

  • 1Water pooling around the base of the tank
  • 2Rusty or brown hot water
  • 3Popping or rumbling sounds while heating
  • 4Hot water runs out much faster than before
  • 5Rotten egg smell from hot water only
  • 6Gas smell near the heater (leave the house and call the gas utility)

Water heater maintenance schedule

Rochester's hard water makes yearly maintenance more important than in soft water regions.

TaskHow oftenWhy
Flush the tank to remove sedimentEvery yearHard water speeds sediment buildup
Test the temperature and pressure relief valveEvery yearPrevents dangerous tank pressure
Inspect the anode rodEvery 3 yearsReplace when more than half consumed
Descale a tankless heat exchangerEvery year, 6 months on well waterRestores flow and heat output
Clean the tankless inlet screenEvery 6 monthsKeeps water flow steady

Set the tank thermostat to 120°F. It reduces scald risk and slows mineral buildup. If your home also has scale in the dishwasher, read our dishwasher repair guide.

Water heater repair questions

Why do I have no hot water?

On a gas water heater, a pilot that will not stay lit usually means a failed thermocouple or flame sensor. On an electric water heater, a burned out heating element or a tripped high limit reset button is the most common cause. Check the breaker first on electric units.

Why does my hot water run out so fast?

Sediment from hard water settles in the bottom of the tank and takes up space, or the lower heating element on an electric unit has failed. Flushing the tank or replacing the element usually restores capacity.

Is a leaking water heater an emergency?

A leak from the tank body means the tank has failed and must be replaced. Shut off the cold water supply valve above the heater and the power or gas, then call. Leaks from fittings or the relief valve can often be repaired.

Do you service tankless water heaters in Rochester?

Yes. We descale, repair and maintain gas and electric tankless water heaters, including clearing error codes caused by scale, ignition faults and venting issues.

Do you offer emergency water heater service?

Yes. Phones are answered 24 hours a day at (507) 868-1090, including weekends and holidays.

Water heaters brands we repair in Rochester

Our water heater repair technicians service every major brand, from everyday models to high end built in units.

  • A. O. Smith water heater repair
  • Rheem water heater repair
  • Bradford White water heater repair
  • State water heater repair
  • Whirlpool water heater repair
  • GE water heater repair
  • Rinnai water heater repair
  • Navien water heater repair
  • Noritz water heater repair
  • Takagi water heater repair
  • Ruud water heater repair
  • American water heater repair

Why Rochester calls us

Why choose us for water heater repair near you

Gas, electric and tankless

Thermocouples, elements, gas valves and tankless error codes.

24/7 response

No hot water in a Minnesota winter is treated as urgent.

Hard water maintenance

Flushing and descaling built for Rochester water.

Straight advice on age

We tell you when a tank is near the end of its life.

  • Same day appointments
  • 24/7 emergency line
  • Licensed and insured
  • Locally owned

How to make your water heaters last longer

  1. 1Flush the tank once a year
  2. 2Test the relief valve once a year
  3. 3Check the anode rod every 3 years
  4. 4Set the thermostat to 120°F
  5. 5Descale tankless units yearly

No hot water right now?

Call any hour for water heater repair in Rochester.

Call nowBook repair