FAQ: How To Hook Up A Tankless Water Heater?

Is it hard to hook up tankless water heater?

Tankless water heaters cost more than traditional tank water heaters; typically about twice the price for the unit alone, depending on what flow rate is needed. They’re also more difficult to install, as they have special venting requirements and often need larger gas lines because of the higher BTU rating.

Do tankless water heaters need special wiring?

You cannot use an electric tankless water heater in place of an electric tank without a significant upgrade in wiring and most probably adding new breakers to make a total of two or three breakers.

Can you hook up a hose to a tankless water heater?

Hook up a hose to the inlet side of the hot water heater, which is where cold water enters the system. There should be a separate hose connection to do this, or you might have to remove the existing cold-water supply hose. Once this is complete, shut off the pump, remove your flush hoses, and close the valves.

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How long does it take to hook up a tankless water heater?

Placing the new tankless water heater shouldn’t last more than half an hour. The plumber has to bring the new unit, take it out of the box and handle it for the later mount. Connecting the system may take somewhere between 45 and 60 minutes.

What is the downside of a tankless water heater?

The primary disadvantage of on demand or instant hot water heaters is the upfront cost. The smaller units that you often see won’t produce enough hot water to serve most households. They’ll only serve one faucet at a time—a problem if you want to shower while the dishwasher is running.

Is it worth switching to a tankless water heater?

The big advantage of tankless water heaters is that they use less energy since they only heat up water when you need it. You can save hundreds on your energy bill each year. Because they don’t waste power, you can also enjoy the fact that your home will be more sustainable and eco-friendly.

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.

What size wire do you need for a tankless hot 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 manufacturer’s instructions call for a larger cable, the National Electrical Code says you must comply.

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What are the electrical requirements for a tankless water heater?

Unfortunately, the average electric tankless water heater needs at least 120 amps to operate and the average household’s 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.

Where should a tankless water heater be installed?

The ideal location for your water heater is inside the home. Most installations are small and unobtrusive so they will easily fit in a pantry, under the stairs, or under your sink. If you must place the water heater outside, make sure it’s safe from direct sunlight, rain, and insects.

Can you use PEX on a tankless hot water heater?

Can I Connect PEX to My Water Heater? PEX can’t be directly connected to a water heater. First extend a pipe 18 in. from your water heater and connect the PEX to the pipe.

Can a tankless water heater fill a tub?

Please remember that tankless water heaters also come in different sizes, and you need to get a unit that will deliver a strong flow to the tub. A small tankless water heater can take a long time to fill a large tub. Whatever way you choose, at least now you’ll finally be able to relax in a nice, hot whirlpool tub.

Why is tankless water heater installation so expensive?

Installation is expensive because the unit needs a bigger gas supply than a conventional water heater does, and it needs to run its own exhaust flue to the exterior. Installation costs can vary widely, depending on the location of the flue and the gas supply. The unit itself costs between $800 and $1,000.

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What is the average cost of installing a tankless water heater?

Tankless water heaters are more expensive than storage water heaters, and the units alone can cost anywhere from $1,000 to $3,000. The final price will likely be in the $2000 – $4500 range including installation.

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