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
Audrey Bruno  •  Apr 10, 2026
Water Heater Expansion Tank Installation Diagram: How It Works
Water heater tank expansion installation diagrams can be helpful to have on hand whether you’re replacing an old unit or installing a new one.
C.E. Larusso  •  Apr 10, 2026
Water Heater Installation Code Requirements: A Complete Guide
Knowing water heater installation code requirements can save you from paying fines and putting your household in danger. Here’s what to know.
Kelly Weimert  •  Apr 10, 2026
Can You Still Use Water if Your Water Heater Is Leaking?
If your water heater is leaking, you can still use water as long as you have a repair plan. Here’s what you need to know about a leaking water heater.
C.E. Larusso  •  Apr 10, 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.
Kyle Schurman  •  Apr 10, 2026
How Many Amps Does a Water Heater Use?
Learn how many amps you'll need to have for your water heater to operate. Some homeowners will need to upgrade amperage before installing new water heaters to avoid electrical outages and fires.
Deane Biermeier  •  Apr 10, 2026
Parts of a Water Heater and What They Do
There are many parts of a hot water heater. The type you need to deal with depends on your water heater. Here's what each part does.
Amy Freeman  •  Apr 10, 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.
Kate Fann  •  Apr 10, 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.
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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.