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
Mike Miller  •  Jul 10, 2026
How Much Does a Solar Water Heater Cost? [2026 Data]
While solar water heater costs are a bit higher than a standard system, this energy-saving option could pay for itself in a few years. Here’s what you need to know.
Jouviane Alexandre  •  Jul 10, 2026
9 Tips for Preventative Maintenance on a Hot Water Heater
Whether you’re looking to cut down on energy bills or keep your showers warm, use these maintenance tips to keep your hot water heater up and running.
Jouviane Alexandre  •  Jul 10, 2026
3 Reasons Your Hot Water Tank Relief Valve is Leaking
A hot water relief valve keeps pressure from building in the tank—if it works properly. Learn three reasons why your valve may be leaking and how to fix it.
D.P. Taylor  •  Jul 9, 2026
Start Thinking About Pool Heaters Before Spring
While the fall is usually the most popular time for homeowners to get a pool heater, here’s why you should consider doing it in the spring instead.
Audrey Bruno  •  Jul 9, 2026
How Long Do Hot Water Tanks Last? Here’s What to Know
If your hot water tank is making strange sounds or your water temperature is off, it may be time to replace it. But how long do hot water tanks last? Find out here.
Allie Ogletree  •  Jul 9, 2026
6 Signs Your Water Heater Might Explode
Is your water heater at risk of explosion? Read further to learn about the warning signs.
Katy Willis  •  Jul 9, 2026
The Importance of Water Heater Placement
Find out why water heater placement is such a big deal in order to prevent damage. Use our expert guide to figure out whether your water heater is putting your home at risk and if it's time to upgrade the heater and move it to a better location.
Lawrence Bonk  •  Jul 9, 2026
7 Ways to Prevent a Water Heater Catastrophe
Many homeowners don’t know the importance of water heater maintenance until it’s too late. If your water tank leaks, or even bursts, you may wake up to a catastrophic pool in your home. Prevent disaster by following these seven easy steps.
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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.