Why does my tankless water heater keep tripping the breaker?

Altogether, the answer to your question “why does your water heater keep tripping the breaker” is simple: you either have a faulty breaker, a bad heating element, or damaged wiring. With these anomalies, it is necessary for you to find out where the problem takes place.

Can you install a tankless water heater next to an electrical panel?





The only code requirements I’ve found regarding clearances around an electrical panel are allowing at least a 30″ working space (side to side).

Do electric tankless water heaters need GFCI breakers?

In a garage, every 120, 15 and 20 Amp receptacle outlet needs to be GFCI protected, so if you have a tankless water heater in the garage, it should be protected as well.

What is the most common problems with tankless water heaters?

Most Common Problems With Tankless Water Heaters

  • Overload. Every tankless water heater has a flow rate capacity that should give you a good idea of how much hot water can be used simultaneously. …
  • Cold Water Sandwich Effect. …
  • Mineral or Sediment Buildup. …
  • Flame or Ignition Failure.


What size breaker do I need for a tankless water heater?





A gas tankless water heater only needs a 15-amp, 120 volt dedicated single-pole breaker for this purpose.

How far does electrical panel need to be from water heater?

Basically, the panel can be anywhere in the 30″ width working space. There is no mention of center of the panel or otherwise. Meaning, the panel can be at the extreme side of the 30″ space as long as the space is clear for 30″.

How far away does a water heater need to be from electrical panel?

The 30-inch width in front of the panel does not have to be centered, although it is shown that way in the diagram. Water heaters require clearance in front of them at the service side also. A gas water heater needs a 30-inch by 30-inch area, per International Residential Code (IRC M1305.

How close can an electrical panel be to a water source?

The National Electrical Code (NEC) does not specifically address plumbing pipe clearance, but requires an area clear of any obstructions that is 2′-6” wide, 3′-0” deep, and 6′-6” high around the front of a panel [NEC 110.26(A)].

What is the downside of a tankless water heater?



The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters. Including installation, tankless water heaters cost 3 times more than tank-style water heaters on average.

What are the pros and cons of electric tankless water heaters?

Are Tankless Water Heaters Worth It? 10 Pros and Cons

  • Pro #1: Instant Hot Water. …
  • Con #1: Inconsistent Temperatures. …
  • Pro #2: Longer Lifespan. …
  • Con #2: Higher Initial Cost. …
  • Pro #3: Lower Month-to-Month Costs. …
  • Con #3: Limited Hot Water Supply. …
  • Pro #4: Space Savings. …
  • Con #4: Additional Equipment is Often Necessary.

Are tankless water heaters a fire hazard?

Tankless water heaters can catch fire, however, the risk is minimal. Tankless water heaters only ignite and heat water on demand. Fire risk with tankless water heaters is largely caused by gas leaks that develop. Electrical sparks near gas leaks could cause fire or explosion.

How many amps does an electric tankless water heater draw?



Tankless heaters can draw anywhere from 42 amps to 167 amps. We can calculate exactly how many amps does a tankless water heater because we know two key factors: Overall power or wattage. Electric tankless water heaters can have a power input from 10,000W (10 kW) to 40,000W (40 kW).

How many amps service do I need for tankless water heater?

120 amps

A tankless water heater requires 120 amps to run on average.



If your home is older, you’ll likely need a professional electrician to upgrade your system and increase the amount of amperage available in your home.

How do you wire an electric tankless water heater?

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Can I install my own electric tankless water heater?



While it is possible to install your own tankless water heater, it’s not a job for inexperienced do-it-yourselfers. There are a number of different sizes and styles of tankless water heaters, including propane, natural gas and electric, along with single-room or whole-house sized models.

Does an electric tankless water heater need a pressure relief valve?

Pressure-relief valves are an essential component of tankless water heaters. The valves allow you to manually release air from the heating chamber when filling the chamber with water for the first time, or during periodic maintenance.

Can I replace an electric water heater with a tankless water heater?

Generally, you can replace an existing conventional water heater with a similarly powered tankless unit, although there are a few considerations depending on the power source: For electric systems, you will need to address the additional voltage and amperage requirements of a tankless heater; for gas systems, there

Should I replace my water heater with a tankless water heater?

The Pros of Switching to a Tankless Water Heater



Avoid the risk of flooding due to a ruptured tank. Tankless water heaters consume less energy because they only need enough power to heat water as it’s needed. Tankless water heaters are more efficient and don’t experience standby heat loss.

Does a tankless water heater increase home value?



If you are looking to increase the value of your home, adding a tankless water heater to your features is a great place to start. According to a study conducted by Zillow, homes with tankless water heaters sold for 4% more than their expected value. On average, these homes also sold 43 days faster than expected.