When your water heater isn’t working the way it should, it’s more than just an inconvenience—it can disrupt your entire day. Whether you’re dealing with lukewarm showers, inconsistent temperatures, or no hot water at all, there’s usually a deeper issue at play.
At Michael Runk Plumbing & Heating, we’ve helped countless Maryland homeowners diagnose and resolve water heater issues quickly and efficiently. If your water heater is underperforming, here are some of the most common problems to consider—and when to call a professional.
Sediment Buildup in the Tank
Over time, minerals from your water supply (especially if you have hard water) can accumulate at the bottom of your water heater tank. This sediment acts as a barrier between the burner and the water, reducing efficiency and heating capability.
Signs to watch for:
- Rumbling or popping noises
- Longer wait times for hot water
- Higher energy bills
A professional flush can often solve the problem—but if it’s been neglected for too long, replacement may be the more cost-effective option.
A Failing Heating Element
In electric water heaters, the heating element is responsible for warming the water inside the tank. If this component wears out or breaks, your water might only get lukewarm—or stay cold entirely.
This is a relatively common and fixable issue. A licensed plumber can test the element and replace it if needed.
Faulty Thermostat
Your water heater’s thermostat controls the water temperature. If it’s not calibrated properly or has stopped working, you might notice water that’s too hot, not hot enough, or fluctuates wildly.
Pro tip: Always keep your water heater set around 120°F for optimal efficiency and safety.
Pilot Light or Ignition Problems (for Gas Heaters)
If you have a gas water heater, an extinguished pilot light or a malfunctioning ignition system can leave you without hot water. This could be due to a faulty thermocouple, gas valve issue, or even a simple draft.
If the pilot light keeps going out or won’t stay lit, don’t try to force it. Call a plumber to inspect and safely diagnose the issue.
Old or Worn-Out Unit
Water heaters don’t last forever. The average lifespan is 8–12 years, depending on maintenance and water quality. If yours is nearing that range and struggling to keep up, replacing it may be more practical than repair.
Telltale signs of age include:
- Rusty water
- Visible corrosion on the tank
- Frequent repairs
- Reduced capacity
Undersized Unit for Household Needs
Sometimes, the water heater isn’t the problem—your household has simply outgrown it. If you’ve added new appliances, bathrooms, or family members, your current unit may not be sized to meet your hot water demand.
Upgrading to a larger tank or even a tankless water heater may offer a long-term solution with improved energy efficiency.
Trust Michael Runk for Fast, Reliable Water Heater Service
If your water heater isn’t doing its job, don’t ignore the problem. Minor issues can quickly turn into major repairs—or worse, full system failure. At Michael Runk Plumbing & Heating, we offer water heater inspections, repairs, and replacements throughout Maryland.
From conventional tank systems to high-efficiency models, we’ll help you find the right solution for your home—and get your hot water flowing again. Contact us today to schedule service and get back to comfort and convenience with confidence.