How do you winterize a tankless hot water heater?

By Robert Flores / October 27, 2022

How to Winterize Tankless Water Heaters. First, the heater should be turned off and the power cord unplugged. The gas and water supply lines should then be shut and the tank drained. When the water pressure reduces, the inlet and outlet water pipes should be disconnected. Nov 25, 2015

Are electric tankless water heaters a fire hazard?

Tankless Water Heaters are Safer, But… Overall, tankless water heaters are safer than storage tanks because there’s no large holding tank that can overheat or explode. Storage tanks can have open flames and the tanks themselves can get hot; a definite hazard for small children and pets. May 17, 2018

How do you drain a tankless hot water heater?

Steps to Drain a Tankless Water Heater Turn off the tankless water heater power source. … Close and turn off the water valves connected to your tankless water heater. … On each of the cold and hot water valves you’ll see purge valves. … Attach the hosing lines to each water valve. More items…

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Can I preheat water before it goes through a tankless water heater?

It’s not going to build itself! You can preheat water for any type of water heating system, gas or electric, tankless or with a tank, and it will translate into savings for you.

How long does it take a tankless water heater to pay for itself?

How long does it take for a On Demand or tankless water heater to pay for itself? The pay off time on a tankless water heater varies based on usage, utility rates and cost of installation. It can take from 7 to 10 years to pay for its self. May 31, 2020

How do I make my shower hotter?

Why do tankless water heaters cost more to install?

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. Apr 19, 2007

How much money do you save with a tankless water heater?

Tankless Water Heaters Savings First, the Department estimated that a tankless water heater is 24-34% more energy efficient than a water heater with a tank. This translates to an average cost savings of $108 per year. This is just an average. Nov 20, 2019

How heavy is a tankless water heater?

about 25 pounds A tankless water heater typically weighs about 25 pounds and can be mounted on a wall, taking up about two square feet of space. Oct 7, 2021

What size gas line do I need for a tankless water heater?

¾-inch A typical tankless water heater will need a ¾-inch gas line. However, if there is sufficient pressure and the run length is short enough, a ½-inch line may be sufficient with certain tankless water heaters, such as the Noritz EZ Series. Nov 8, 2018

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Is a tankless water heater worth the cost?

According to the U.S. Dept. of Energy, a tankless water heater is more efficient and uses less energy than a conventional water heater, providing a $25 to $107 in annual savings. If your hot water use is low (less than 41 gallons per day), a tankless water heater will be 24% to 34% more efficient. Jun 4, 2021

Is a tankless water heater better than a tank water heater?

According to, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service.

Can a tankless water heater fill a tub?

Yes, usually. A tankless water heater can provide hot water indefinitely, which means it will fill up the tub. However, you still need to consider how fast the heater can provide the temperature of water you want. Faucets work by mixing in hot water with the cold. Feb 22, 2022

How much does it cost to switch from tank to tankless water heater?

The cost to switch to a tankless water heater system is about the same as having one installed: an average of $2,800 with a range between $1,200 and $2,500. Aug 8, 2022

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

Electrical Requirements Model Recommended Breaker Recommended Household Electric Service ECO 11 1 x 60 Amps DP 125 Amps ECO 8 1 x 40 Amps DP 100 Amps POU 6 1 x 30 Amps 100 Amps POU 3.5 1 x 30 Amps 100 Amps 4 more rows

What is the downside of a tankless water heater?

In addition to high upfront costs, tankless water heaters have several other disadvantages compared to tank-style water heaters: they take longer to deliver hot water. the water temperature is inconsistent when multiple outlets are on simultaneously. they cannot provide hot water during a power outage. Oct 16, 2022

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Can a tankless water heater heat the whole house?

What is a Tankless Water Heater? These water heating systems don’t utilize a tank to store heated water. They provide on-demand hot water to either a whole house, a local tap, or even an appliance.

Can a tankless water heater work for the whole house?

Whole house tankless water heaters are a great option to help you save on energy costs. These provide on-demand hot water to all the fixtures in your home. Also, unlike a tank-style water heater, there’s no “running out” of hot water. Instead, you can get a steady flow of hot water as you need it. Jul 19, 2021

Do you need electricity for a gas tankless water heater?

While on-demand gas water heaters don’t rely on electricity as a fuel source to heat water, on-demand heaters usually have a control panel that is powered by electricity which is the ‘brains’ of the water heater. So even a tankless gas water heater will not work independently in a power outage.

How much does it cost to install a tankless gas water heater?

The typical range for tankless heater installation is between $4,500 and $6,500, averaging out to around $5,500 (including the water heater, warranty and tune ups). The tankless heater installation without the unit can cost between $1800 and $3500, averaging out to around $2650. Aug 26, 2022


Tankless Water Heater Hazards You Should Keep in Mind

How to Drain a Water Heater (Updated Step by Step for Tank and Tankless)

Frequently Asked Questions About Tankless and On Demand Water Heaters

How Much Money Does a Tankless Water Heater Save You?

Tankless Water Heater Installation Tips. Things to Consider

Are Tankless Water Heaters Worth The Investment?

How Do Tankless Water Heaters Work?

Tankless Water Heater Installation Cost (2024)

About the author

Robert Flores