Water Heater

A water heater is the hardworking appliance that delivers hot water for showers, dishes, and laundry throughout your home. Whether you're troubleshooting a lukewarm tank, comparing traditional versus tankless models, or planning a full replacement, understanding your options helps you make smarter decisions. Angi connects you with local pros who can handle installation, repairs, and maintenance, plus guides to help you every step of the way.

Related to Water Heater Service

Water Heater Service Articles and Advice
Amy Freeman  •  May 16, 2026
How Much Do Water Heaters Weigh?
How much do water heaters weigh? The answer depends on the type of water heater, its size, and several other factors. Read on to learn more.
Mitchell Grant  •  May 5, 2026
Gas vs. Electric Water Heaters: Which Is Better for Your Home?
Learn the pros and cons of gas water heaters and electric water heaters. Find out which one is the best option for your home.
Kate Fann  •  May 5, 2026
9 Signs Your Water Heater Is Going Out
Leakage, lacking hot water, and other signs tell you that your water heater is failing. Take action before it’s too late.
Mitchell Grant  •  May 5, 2026
Do I Need a Hot Water Heater Expansion Tank?
Hot water expansion tanks help protect your home by preventing an overflow of your water tank. Learn why you may need one, how much they cost, and their benefits.
Mizuki Hisaka  •  May 5, 2026
How Long Should Hot Water Last in the Shower? A Quick Guide
If you like long showers, you may be wondering: How long should the hot water last in the shower? The answer depends on a few factors, so read on to find out.
Kate Fann  •  May 3, 2026
14 Reasons Your Water Heater Is Not Getting Hot Enough
If your water heater is getting warm but not hot, a faulty thermostat, sediment, or more could be to blame. Learn how to spot and solve the problem of a water heater that’s not hot enough.
Amy Freeman  •  May 3, 2026
How to Check Your Hot Water Heater For Potential Problems
Not getting enough hot water? Here's how to check the hot water heater for problems and what you can do to fix it.
C.E. Larusso  •  May 3, 2026
How Long Do Water Heaters Last?
The average lifespan of water heaters is 6 to 15 years for conventional models and up to 20 for tankless ones, but it can be less if they are not properly maintained.
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Common Water Heater Service Questions

The best way to tell is if there’s a label, but there are other methods. Gas heaters will have gas lines leading to the unit, with a pilot light near the bottom of the tank (this is sometimes behind a small panel). Electric units often have lights to signal if they’re heating or not and may have electric panels to control the unit. If there is a vent pipe leading from your heater, it’s almost certainly gas-powered.

Water expands when heated and also when freezing. When water is heated, it expands by around 4%. For a full water heater, this is one of the main reasons malfunctions occur—the hot water has nowhere else to go but out. Due to the constant expansion and reduction in volume, it’s recommended (required in most places) that an expansion tank be installed.

Yes, a leaking water heater can damage electrical work. Water can seep into electrical components, causing short circuits, tripped breakers, or even fires. The combination of water and electricity is quite hazardous, so it's crucial to address any leaks immediately to prevent electrical damage and ensure your home’s safety.

While possible, professional assistance is recommended to ensure compliance with local regulations and avoidance of avoidable risks.

It is not recommended that you cut up your old water heater. Doing so poses a safety risk and may expose you to dangerous components inside the heater. If your water heater is too large or heavy to move on your own, call in a professional to handle removal and disposal.