Signs Your Water Heater Isn’t Producing Hot Water

March 31, 2025

There’s nothing quite like stepping into an ice-cold shower to make you realize something’s wrong with your water heater. While occasional temperature fluctuations might be normal, consistent issues with hot water can signal a bigger problem. At City Plumbing and Rooter, we help Arizona homeowners diagnose and fix water heater issues quickly—before they lead to bigger headaches.

Common Signs Your Water Heater Is Failing

A water heater that isn’t doing its job can make everyday tasks like showering, washing dishes, and doing laundry frustrating. Here are a few warning signs that your system may be on the fritz:

Lukewarm or Cold Water: This is the most obvious sign. If your water never gets hot or takes too long to warm up, something's off—possibly with the heating element, thermostat, or gas supply.

Inconsistent Water Temperature: Hot, then cold, then warm again? Fluctuating temperatures may mean your water heater is struggling to maintain the proper settings.

Discolored Water: If your hot water is coming out rusty or muddy, there could be sediment buildup or corrosion inside the tank.

Strange Noises: Rumbling, popping, or banging sounds coming from the unit usually point to sediment accumulation at the bottom of the tank.

Water Around the Base: A puddle under your water heater may indicate a leak—possibly from a failing tank or pressure relief valve.


Old Age: Traditional tank water heaters typically last 8–12 years. If yours is in that age range, issues with heating are more likely and replacement may be the smarter move.

Possible Causes of Hot Water Issues

There are several reasons your water heater might not be producing hot water:

Faulty Heating Element or Thermostat (electric models)

Pilot Light or Thermocouple Issues (gas models)

Tripped Circuit Breaker

Sediment Buildup Inside the Tank

Corroded or Damaged Components

The good news? Many of these issues are repairable—especially when caught early. That’s why it’s important to call in a professional before a small problem turns into a cold shower emergency.

Trust the Local Experts

At City Plumbing and Rooter, we specialize in water heater diagnostics, repairs, and replacements across Arizona. Whether you have a traditional tank model or a tankless unit, our experienced technicians can identify the issue and recommend the best solution for your home.

Don’t wait until your hot water disappears completely—contact City Plumbing and Rooter today to schedule a water heater inspection and get your comfort back on track.