Tankless Water Heater

A tankless water heater is a compact, wall-mounted unit that heats water on demand rather than storing it in a bulky tank. These systems offer energy savings, endless hot water, and a smaller footprint in your home. Whether you're considering installation, maintenance, or upgrading from a traditional model, Angi helps you find the right pro and resources to get the job done.

Related to Tankless Water Heater Service

Tankless Water Heater Service Articles and Advice
Hot water tanks heat your home’s water supply. Find out whether to choose a tankless water heater or tank unit based on cost, maintenance, efficiency, and other factors.
Learn how to hire a tankless water heater installation pro with our guide covering qualifications, questions to ask, and costs to ensure quality service.
Your water heater is a powerhouse until it’s not! Use this guide on how to flush a tankless water heater to keep it running smoothly and providing hot water.
If your tankless water heater is not heating, there are several common reasons why. Learn the possible causes along with practical troubleshooting tips.
The number of people, flow rate, and water temperature in your home will help you calculate what size tankless water heater you need. This guide walks you through it.
Size, cost, and energy efficiency are some of the differences between condensing and non-condensing tankless water heaters. Keep reading to learn more.
A tankless water heater can increase your home’s value and save you money on your monthly electricity bills. Here’s why a tankless water heater is worth it.
How does a tankless water heater work? These energy-efficient, space-saving units deliver hot water on demand rather than using a storage tank.
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Common Tankless Water Heater Service Questions

Descale the system annually, clean filters, and check for leaks to ensure efficiency.

Your tankless water heater should be serviced every few years. If you live in an area with hard water, then an annual flush is recommended. Always watch for error codes and noises to see whether you need to service your tankless heater sooner. Find a water heater repair pro to inspect and service your water heater if you suspect any issues.

Expect to spend at least thirty minutes to an hour for your tankless water heater to thaw. Using a small space heater can slightly speed up the process. If you believe the connecting pipes are also frozen, you can use a hairdryer to help the pipes thaw while your water heater is thawing. This may save you a decent amount of time.

When it comes to which pump to use to descale a tankless water heater, the type is more important than the size. In general, you want it to have a horsepower of 1/5 hp or 1/6 hp. As long as it meets these requirements, it doesn’t matter how large or small it is.

Tankless water heaters cost about $2,550 on average, with prices ranging from $1,400 to $3,800. The lowest prices are around $370 and go up to about $5,800 at the high end of the price range. When installing a tankless water heater, consider the brand of water heater, the size, type, quality, energy type, quantity (single-point or whole-house), gallons per minute (GPM), condensing vs. non-condensing, tax credits, materials, and your geographic location.