Water Heater Repair: Common Problems and Fixes

Is your morning shower suddenly icy? Or maybe you noticed water pooling near the heater or strange banging noises echoing from the basement. Water heater problems can throw a wrench in your day—and ignoring them can turn a small issue into a disaster.

At Argos Plumbing, we know water heater trouble doesn’t wait for a convenient time. Whether you’re searching for “Kitchen Plumbing near you” or just need peace of mind, knowing what to look for—and when to call in a professional—can save time, money, and stress.

Types of Water Heaters

A water heater is the heart of your home’s hot water supply. But not all heaters are built the same. 🛠️

Common Types:

• Tank Water Heaters: The traditional “big cylinder” models, usually powered by gas or electricity. They store and heat a set volume of water, ready for your shower or dishes.
• Tankless (On-Demand) Water Heaters: These compact units heat water only when you need it. No storage tank, just endless hot water on demand.
• Hybrid Water Heaters: Combining heat pump technology with traditional tank systems, these are more energy-efficient but have more moving parts.
• Point-of-Use Heaters: Small, dedicated units for a specific sink or shower, handy for additions or outbuildings.

Each has its own maintenance quirks and common failures. But across the board, a little early attention goes a long way.

Typical Issues: No Hot Water, Leaks, Noises

Even the most reliable water heaters will act up sooner or later. Here are the top problems homeowners notice:

No Hot Water

That first cold blast is a wake-up call—but what’s behind it?

• Pilot Light Out: For gas models, a blown-out pilot is a classic culprit.
• Tripped Breaker/Thermostat: Electric heaters rely on breakers and thermostats that can trip or fail.
• Faulty Heating Element: Like a burnt-out bulb, the heating element can call it quits.
• Gas Supply Issues: For gas models, no fuel means no flame.

Leaks

Water on the floor? It’s more than an annoyance; it’s a red flag.

• Corroded Tank: Years of use can eat away at the tank from the inside.
• Loose Connections: Inlet or outlet pipes may need a simple tightening.
• Blown Pressure Relief Valve: This valve releases excess pressure—if it’s leaking, something else may be wrong.

Noises

If it sounds like a kettle boiling or rocks rattling, don’t ignore it.

• Sediment Buildup: Over time, minerals settle in the tank, causing popping or rumbling.
• Heating Element Scaling: A layer of scale can make electric elements noisy.
• Water Hammer: Sudden shut-off of supply can create a loud bang in the pipes—a plumbing issue worth fixing.

Basic Troubleshooting: What You Can Check

You don’t need to be a plumber to do a quick checkup. Here’s what you can safely inspect:

• Power/Gas Supply: Make sure the breaker is on, or the gas valve hasn’t been accidentally shut off.
• Pilot Light: If you have a gas heater, look for the blue flame in the small viewing window. If it’s out, follow the manufacturer’s relighting instructions.
• Temperature Setting: Sometimes, the thermostat gets bumped. Aim for 120°F (49°C) for safety and efficiency.
• Visible Leaks: Check around the base and at connections. If you see rust, corrosion, or pooling water, be cautious.
• Listen and Look: Noises or discolored water are early warning signs.

Caution: If you smell gas, turn off the supply immediately and leave the area. Call a professional or your gas provider right away.

Quick Safety Checklist 🛑

• Never open panels or touch wires unless you’ve turned off power at the breaker.
• If the tank is leaking from the bottom, shut off the water supply to the heater.
• Don’t relight a pilot if you smell gas—leave this to the pros.
• Keep flammable materials away from the heater.
• Wear gloves and eye protection if you’re working near the tank.

Safety first. Water heaters mix electricity, gas, and water—a dangerous combination if handled carelessly.

DIY vs. When to Call a Pro

Some water heater hiccups are simple fixes. Others need a licensed plumber with the right tools and training.

Safe for DIY:

• Resetting a tripped breaker
• Checking and adjusting the thermostat
• Relighting the pilot (if you’re comfortable and there’s no gas smell)
• Tightening visible loose pipe connections

Call Argos Plumbing for:

• Persistent leaks or rust
• No hot water after basic checks
• Unusual noises that don’t stop
• Issues with the gas line or valve
• Replacing heating elements or thermostats
• Any work involving opening the unit’s electrical or gas compartments

Remember, working with gas or pressurized water lines is like wrangling a wild hose—things can go wrong fast. When in doubt, it’s safer (and often cheaper in the long run) to call in a licensed plumber.

For more on leak-related problems, see our Leak Repair service page.

What Pros Do On Arrival

When you call Argos Plumbing, here’s what typically happens:

1. Inspection: We’ll check the heater, connections, and surrounding area for damage or code issues.
2. Diagnostics: Testing electrical elements, gas supply, and thermostats using professional meters.
3. Repairs: Swapping out failed parts, fixing leaks, or addressing sediment buildup.
4. Safety Check: Ensuring the system meets current plumbing and safety codes, including pressure relief and venting.
5. Advice: We’ll let you know if your heater is nearing the end of its safe life span, or if an upgrade makes more sense.

Prevention & Maintenance

A little routine care can keep your water heater humming for years:

• Flush the Tank Annually: Sediment is like mud in a coffee pot. Flushing keeps things clean and efficient.
• Test Pressure Relief Valve: Lift the lever briefly; water should flow out. If not, it needs attention.
• Inspect Anode Rod: This sacrificial rod attracts corrosion. Replacing it every 3–5 years can double your tank’s life.
• Check for Drips: Early leak detection means cheaper, simpler repairs.
• Keep Area Clear: Don’t store paint, rags, or boxes near the heater.

Following recommendations from the International Association of Plumbing and Mechanical Officials (IAPMO) and your local codes will help ensure safe, long-lasting performance.

Costs & Time Factors

Water heater repairs vary in cost and duration. Here’s what to expect:

• Simple Fixes: Thermostat or pilot light issues can sometimes be resolved in under an hour.
• Part Replacement: Swapping out a heating element or pressure valve may take 1–2 hours.
• Major Repairs: Tank leaks or gas line fixes take longer and may require parts ordering.
• Full Replacement: Installing a new heater can take several hours, depending on access and local code updates.

Costs depend on the type of heater, the age of the unit, and parts needed. Regular maintenance almost always costs less than emergency repairs.

When It’s an Emergency 🚨

Certain problems mean you should stop what you’re doing and call Argos Plumbing immediately:

• Major Water Leaks: Water pooling or streaming from the tank, especially near electrical connections.
• No Hot Water in Winter: Sudden loss of hot water during freezing temperatures can lead to burst pipes and bigger headaches.
• Gas Smell: Any hint of gas is a reason to leave the area and call for help.
• Scalding Hot Water: If water is suddenly much hotter than normal, the thermostat or relief valve may be faulty—a real burn risk.

For urgent water heater repairs, see our Water Heater Repair page for fast, professional help.

FAQ: Common Water Heater Questions

How long does a typical water heater last?
Most tank water heaters last 8–12 years with proper care. Tankless models can go 15–20 years, but still need maintenance.

Why does my water smell or look rusty?
This often points to corrosion inside the tank or issues with the anode rod. It’s time for an inspection.

Is it safe to install a water heater myself?
For most homeowners, the answer is no. Installation involves plumbing, gas, and electrical work—all covered by strict codes for good reason.

What temperature should my water heater be set at?
120°F (49°C) is hot enough for daily use and helps prevent scalding, while saving energy.

Local/Seasonal Considerations

Winter brings special challenges. Cold incoming water makes your heater work harder. Frozen pipes can lead to leaks and water pressure issues. If you’re in an area with hard water, sediment buildup is more likely—so regular flushing is critical.

If you find yourself searching for “Kitchen Plumbing near you” after a leak or a burst pipe, remember: the best solution is early detection and routine maintenance.

Ready for Reliable Hot Water?

Don’t let water heater headaches put your comfort on ice. Whether it’s a mysterious noise, a surprise leak, or just water that won’t warm up, Argos Plumbing is here to help. For repairs, maintenance, or honest advice, reach for the phone.

Call Argos Plumbing now — or reach us anytime at  844-484-9980 .