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

How many amps do you need for a tankless water heater?

Unfortunately, the average electric tankless water heater needs at least 120 amps to operate and the average households total capacity is 200 amps. This means you will have to upgrade your electrical system to accommodate for the larger load demand, which could cost you up to $1,500.

What size breaker do I need for tankless?

What size breaker and wire for tankless? Single wire cannot be split apart to connect to multiple terminals. Typical tankless requires 40-50 amp breaker for each wire.

What kind of wire do I need for a tankless water heater?

You must utilize either a 120- or 240-volt circuit, wholly devoted to the heater. Both voltages require 8-gauge wire, and the section exposed to the area under the sink must be armored cable. If the manufacturers instructions call for a larger cable, the National Electrical Code says you must comply.

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

requires a dedicated 40 AMP breaker and the dimensions are 10 high x 7-1/4 wide x 3-1/4 deep. Hot Water Faster!

Do they make a 30 amp tankless water heater?

Chronomite SR-30/240 HTR 240-Volt 30-Amp SR Series Instant-Flow Standard Flow Tankless Water Heater.

Are electric tankless water heaters any good?

Energy Use and Efficiency Tankless: Gas and electric tankless water heaters run more efficiently than the conventional water heaters of the same fuel type. We rated the annual energy consumption cost Excellent for a gas model but only Fair for an electric, but both rate Very Good for energy efficiency.

What is required to install an electric tankless water heater?

A tankless water heater usually requires a 1-inch gas pipe from the meter to the water heater. If you need to install a new gas line, it is best to hire a professional plumber to do this. You may want to have another gas shutoff valve installed just prior to the unit being installed.

How many amps does a 80 gallon water heater pull?

This should be checked out first. A water heater will only draw depending on the wattage of the element(s). So your WH has 2 - 4500 watt elements. When only one runs it is drawing about 22 amps (208 is nominal voltage which is what you have in your building) 4500/208= 21.6 amps.

Can you install a tankless water heater yourself?

Installation. While it is possible to install your own tankless water heater, its 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.

How long do tankless hot water heaters last?

20 years Most tankless water heaters have a life expectancy of more than 20 years. They also have easily replaceable parts that extend their life by many more years. In contrast, storage water heaters last 10–15 years.

How many amps does an instant hot draw?

One whole-house tankless water heater has four 7,000-watt elements, for a total electrical load of 28,000 watts. This load re- quires wire and a circuit breaker that will handle at least 120 amps, at a cost many times that of electrical service to a conventional tank water heater.

Are all electric water heaters 240 volts?

Most residential electric water heaters use 240 volts. Their are single element water heaters that operate on 120 volts and single element water heaters that operate on 240 volts. Check the label on your water heater for the voltage rating. Breakers are usually labeled, however, they can be labeled wrong.