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Express Plumbing plumbing guide · July 13, 2026

5 Signs Your Water Heater Needs to Be Replaced

Most homeowners do not think about their water heater until something goes wrong. Here are five warning signs that yours may be on its way out — and what to do before it fails completely.

5 Signs Your Water Heater Needs to Be Replaced

Your water heater quietly does its job every day — until it does not. By the time most homeowners notice a problem, the damage is already done. Knowing the warning signs early can save you from a flooded basement, a cold shower at 6 AM, or an urgent weekend call.

Here are five signs it is time to start thinking about a replacement.

1. Your Water Heater Is Over 10 Years Old

The average tank water heater lasts 8 to 12 years. If yours is pushing past that range, it is living on borrowed time — even if it seems to be working fine right now. Internal corrosion and sediment buildup are happening whether you can see them or not.

You can find the age of your water heater by looking at the serial number on the label. The first two digits usually indicate the year it was manufactured. If you are not sure how to read it, give us a call and we will help you figure it out.

2. You Are Running Out of Hot Water Faster Than You Used To

If your showers are going cold before everyone has had a chance to clean up, that is a sign your water heater is losing efficiency. Over time, sediment builds up at the bottom of the tank and acts as a barrier between the heating element and the water. The result is less hot water in less time.

In some cases, flushing the tank can help. But if the unit is already aging, it is often more cost-effective to put that money toward a new, more efficient model.

3. You Hear Rumbling, Popping, or Banging Sounds

A well-functioning water heater should be nearly silent. Strange sounds — especially rumbling or popping — are usually caused by hardened sediment moving around in the tank as the water heats up. This puts extra strain on the tank walls and heating elements, shortening the life of the unit.

If you are hearing these sounds, it is worth having a plumber take a look sooner rather than later.

4. You See Rust-Colored Water or Rust Around the Tank

Rusty water coming from your hot water tap is a serious red flag. It typically means the inside of the tank is corroding — and once corrosion sets in, the tank can develop leaks at any time.

Before assuming it is the tank, it is worth ruling out corroded pipes. A licensed plumber can help you figure out exactly where the rust is coming from.

You should also check around the base of the tank and near the connections. Any sign of rust, moisture, or mineral deposits on the outside of the unit deserves attention.

5. There Is Water Pooling Around the Base of the Tank

This one is urgent. Water on the floor around your water heater almost always means there is a crack or leak in the tank itself — and that is not something that can be patched. Once the tank is compromised, the only fix is replacement.

If you see standing water, turn off the power or gas to the unit and call a plumber right away. Catching it early can prevent serious water damage to your floors, walls, and anything stored nearby.

What to Do Next

If any of these signs sound familiar, do not wait for a full failure. A proactive replacement is almost always less expensive and less stressful than an urgent one.

At Express Plumbing, we install tank and tankless water heaters throughout Southington and Central CT. We will help you pick the right unit for your home and your budget — and we will get it done right the first time.

Give us a call at 860-773-9876 or use the contact form on our site to request service.