Why does it take so long to get hot water from my tankless water heater?

By Robert Flores / October 26, 2022

The length of the delay can be determined by a few factors, including the distance between the water heater and the outlet. In other words, the longer the water has to travel, the more cold water will need to be discharged before the hot water appears. Dec 21, 2020

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. Aug 17, 2020

Can I install tankless water heater myself?

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.

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Can I replace my hot water tank with a tankless?

Yes. The initial cost of converting your tank water heater to a tankless is expensive. Tankless water heaters are 3x more expensive than your average tank water heater. However, the energy savings and supply of endless hot water can outweigh the cost for many. Feb 18, 2021

How big of a tankless water heater do I need for a family of 5?

In short, a family of 5 would need a 10 GPM gas tankless heater or 27 kW electric tankless heater if you live in the northern part of the USA, where the input water has a lower temperature. The tankless heater has to work extra hard to bring the water temperature up to 110˚F or 120˚F.

How do I convert my gas water heater to tankless?

This includes: Mounting the tankless water heater. Running the water heater’s vent to meet local code regulations (for gas models) Installing the gas line (for gas models) Installing new water lines. Installing the pressure relief valve. Connecting the electrical supply to the water heater. More items…

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

An electric tankless unit will cost about $500 to $700, roughly the same as a traditional tank model, while the cost of a gas tankless heater runs about $1,000 to $1,200. Beyond the initial cost, the national average for the installation of a tankless unit is slightly over $1,700.

Do tankless water heaters increase electric bill?

Tankless heaters can be 8-14% more energy-efficient for households that use around 86 gallons daily. Installing a tankless heater at each hot water outlet, Energy.gov says, can increase tankless water heater energy savings by up to 27-50%. Oct 6, 2016

Can you take two showers at once with tankless water heater?

Depending on the flow rate of your water heater, you may be able to take a shower and use hot water at the kitchen sink at the same time, but you probably won’t be able to run two showers and the kitchen sink. You could, of course, install two tankless heaters to provide you with a greater output of hot water. Jan 29, 2018

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Do tankless water heaters need maintenance?

Annual or semi-annual maintenance is important for a tankless water heater, but it won’t make the system last forever. Eventually you will need to replace the appliance with a new one, though a tankless system may last more than 20 years. May 25, 2020

What is the most efficient type of water heater?

Heat pump and solar water heaters are overall the most energy-efficient types while condensing gas water heaters are the most energy-saving gas-fueled appliances. Mar 30, 2022

Which type of water heater is best?

Since heat pump water heaters draw their heat from the surrounding air instead of working to generate it, they are much more energy efficient. In fact, they can be two to three times as efficient as a standard storage tank water heater. Oct 27, 2021

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

Tankless water heaters can eventually pay for themselves with energy bill savings, but the payback period may be long: 22-27 years for a gas tankless heater, 12-20 years for an electric. Tankless water heaters tend to last longer than storage heaters: 20 to 25 years in many cases.

How noisy is a tankless water heater?

Gas tankless hot water heaters all make noise when firing up and heating water, but the levels are usually less than 90 decibels.

Do electric tankless water heaters need a vent?

Unlike gas or propane tankless water heaters, electric tankless water heaters do not need venting because they use electric burners to heat water rapidly. Since no natural or propane gas is used, no venting is needed. Jul 15, 2022

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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

Can pipes freeze with tankless water heater?

Not just your water heater, but also your pipes are at risk from frigid temperatures, and they are NOT protected by the freeze prevention system in your heater. Be sure to insulate pipes with fiberglass or polyethylene insulation or heat tape. Feb 9, 2017

How do you protect a tankless water heater from freezing weather?

What is needed to install a tankless water heater?

Tankless water heaters provide hot water on-demand. Gas units require a gas line, adequate combustion air, a vent to remove combustion gas and an electrical outlet to power the unit. While they last longer than tank-style water heaters, they are more costly to install and often require upgrading your gas line.

Do outdoor tankless water heaters need to be covered?

Yes – there are outdoor tankless water heater units that are made to withstand the elements BUT – it is recommended that electric tankless water heaters be provided with some form of shelter. Gas powered tankless water heaters that are placed outdoors do not require any form of protective shelter.

Resources

How to Deal with a Delay in Hot Water from a Tankless Water Heaters


https://www.mrrooter.com/charlotte/about-us/blog/2020/august/does-a-tankless-water-heater-increase-your-home-/

Installing a Tankless Water Heater|2-10 Blog


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What Size Tankless Water Heater Do I Need? (2,3,4,5,6 Family)


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Tankless vs. Traditional Water Heaters | Which is More Energy Efficient?


https://www.erniesplumbingandsewer.com/never-take-another-cold-shower-get-a-tankless-water-heater

Are You in Need of Tankless Water Heater Maintenance?

What Type of Water Heater Is Most Energy Efficient?


https://www.bobvila.com/articles/types-of-water-heaters/
https://www.ragsdaleair.com/help-guides/will-a-tankless-water-heater-save-me-money
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Tankless Water Heater Installation Cost

How to Prevent Your Tankless Water Heater from Freezing



https://www.homedepot.com/c/ah/how-to-install-a-tankless-gas-water-heater/9ba683603be9fa5395fab904246ec3f
https://www.dallasgaplumbers.com/articles/can-tankless-water-heaters-be-installed-outside.php

About the author

Robert Flores