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Q: How long does it take for tankless hotwater heater to heat water?
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You live on a third floor with your hot water storage tank in the basement Where would a tankless heater need to be located to work effectively?

A tankless and a gas(with a normal tank) water heater both burn gas to heat the water, so they need vents to bring air into the space where they are located, and a venting system for the exhaust. Some considerations for tankless: 1) they require larger gas supply pipes; 2) they can be placed on most walls, but you still need room around them; and 3) they heat the water as it flows through the pipe, so you still have to deal with the cold water which is in the pipe. I mention the last one because many people think that they will immediatley obtain hot water. For your situation, placing the tankless heater on the third floor would require new gas pipes. Commonly gas pipes are 3/4" in a home, and a tankless unit may need 1" at a minimum. Having the water heater on the same level would provide you with hot water sooner. Placing the tankless unit where the hot water storage tank is may require less plumbing, so it could be an easier task. The water will take longer to heat, and you could be wasting energy of the heated water in the pipe. This can be partially resolved by insulating the hot water pipes. Insulating these pipes is a wise idea for efficiency in either location.


What are tankless water heaters and how are they used?

Gas tankless water heaters use high-powered burners that quickly heat water as it runs through a heat exchanger. It is 22 percent more energy efficient on average than the gas-fired storage-tank models.


What is really called a water heater or hot water heater?

It's called water heater. There isn't a reason to heat hot water


How does a hydronic heater work?

A hydronic heater works by using a boiler system to heat the water and then is pumped throughout the house in order to heat the specific area of a home.


Why is copper pipe used in solar water heater?

Because it is a very good transmitter of heat.

Related questions

How much will a Rheem Tankless water heater affect your gas bill?

In the long run a Rheem Tankless water heater will save you money in the long run by heating the water faster and you will have to run the water for a shorter amount of time for it to heat up.


If you disconnect the tankless water heater on your furnace and have an electric hot water heater installed will there be a problem when the furnace runs to heat the house?

Not if it was disconnected properly


Tankless Water Heater Installation?

form_title=Tankless Water Heater Installation form_header=11693 Is this need emergency in nature?*= () No () Yes Please specify the type of tankless water heater you would like installed.*= () Whole house () Don't know () Single point Can you describe the kind of heat source you are looking to get?*= () Natural gas () Electric () Propane () Don't know () Solar


What are some of the benefits of owning a tankless water heater?

Tankless water heaters do not have a tank with a reserve of hot water that must be kept at temperature until there is a demand for it. Depending on the age of the water heater, this could result in a lot of wasted energy. Tankless water heaters heat the water as it is needed. These units are more expensive, but in the long run result in savings, both of money and energy.


How are tankless water heaters green?

Tankless water heaters are green because they only heat the water as it is needed. In a conventional water heater with a tank, there are 20 - 60 gallons of hot water that must be kept hot 24 hours a day, 7 days a week. Some of the heat in that water is constantly getting out of the tank, no matter how well it is insulated. That means that every so often, the heater must run to bring the water temperature back up. All that heat that leaks out is wasted. A tankless water heater doesn't use any energy when there is no water flowing.


What is a Bosch tankless water heater?

Traditional water heaters heat large amounts of water and hold it in a tank until it is needed. It periodically reheats the water to keep it at a set temperature. All this heating costs money. A Bosch tankless water heater has a very small tank mounted on the wall that rapidly heats the water only when it is needed.


Is a Tankless Water Heater the Best Choice?

The energy saving potential of tankless water heaters has led many consumers to consider replacing their storage tank water heaters with tankless models. Tankless water heaters only heat water when it is needed. The U.S. Department of Energy estimates a tankless heater can reduce water heating costs by up to 30 percent. The small size of the tankless heaters is also attractive where there is limited space. And, although there may be some maintenance costs, tankless heaters should last longer than storage tank water heaters. However, the initial cost of a tankless water heater is significantly higher than the price of a new storage water heater. Forty to fifty gallon standard storage water heaters cost from $300 to $650 at a major home store. The same store sells a 7.4 gallon per minute tankless water heater for $1,200. The cost of installing a tankless water heater is also significantly higher. Local plumbers, home stores and handymen have competitive pricing on the installation of storage water heaters. It is a quick job for an experienced installer. A tankless heater may require costly electrical work and new gas piping. The more complex installation process can be time consuming and may require specialized workers. In a 2008 article, “Consumer Reports” estimated that it would take 22 years of energy savings to recoup the higher cost of a tankless water heater. Energy rebate programs and tax credits may be available to reduce the net cost of a tankless heater or a highly efficient storage tank heater. Check programs sponsored by government agencies and utility companies before deciding on a purchase since discounts, rebates and other incentives can help a tankless water heater pay for itself in significantly less time. Rising energy costs may also make a tankless heater a more attractive financial proposition. Of course, cost savings are not the only reason to purchase a tankless water heater. Some consumers are focused on reducing their energy use. Recovering the cost of switching to a tankless heater is less important to them. If your priority is reducing your carbon footprint, a tankless water heater can help accomplish that objective.


Tankless Water Heater Repair?

form_title=Tankless Water Heater Repair form_header=11703 How would you best describe the nature of the problem?*= [] No hot water [] Annual maintenance [] Not enough hot water [] Leaking or cracked pipe [] Making noise [] Hot water fluctuations [] Pilot light is out [] Other What is the source of heat the water heater is using?*= () Electricity () Natural gas () Propane () Solar () Don't Know


Tankless Water Heaters Save Money?

Tankless water heaters are fairly new in the marketplace but are great upgrades to a home. A Rinnai tankless water heater provides hot water instantly. The Rinnai also provides unlimited hot water. Installing a new model will end the days of waiting for showers to heat up and worrying about running out of hot water during a shower. Because water is only heated when it is in use, tankless models save money on energy since they are not heating water that is just sitting in a tank. Because there is no tank, the Rinnai tankless water heater also saves space.


Check With Your Plumber Before You Purchase A Tankless Water Heater?

Although tankless water heaters are an efficient, cost effective way to heat up water for your family's personal use, not every home has the type of plumbing necessary to use these new devices. If you live in an older home, make sure that you consult with a plumber before you make your tankless water heater purchase. You do not want to go to all the trouble deciding which unit to buy only to find out that you can only use the traditional tank models. A plumber will be able to quickly tell you if a tankless water heater is right for your home.


What are the benefits of a gas powered tankless water heater?

There are many benefits of a gas powered tankless water heater, including federal tax rebates, an endless supply of hot water, a longer life span than tank systems, higher energy efficiency and a lower loss of overall heat. Gas powered tankless water heaters take up much less space and can be installed outdoors, under cabinets or on walls.


How to Determine Your Need for a Tankless Water Heater?

The most talked-about type of water heater is the tankless or instant water heater. The tankless heater does not have a reservoir of water to keep heated constantly. It heats the water as it is needed. If you’re like most folks, You want hot water that is fast and plentiful. You want a heater that heats quickly without costing a fortune. You expect your heater to be robust enough to take a shower while the dishwasher is running. For these reason, a tankless water heater falls short. The up-front cost is the first consideration. A 40-gallon tank heater only costs about $800 installed. A comparable tankless water heater can run $3500 or more after installation, depending on whether your new heater fits your old fittings. Another consideration is the level of use. Unless you buy a very hearty tankless heater, it will not be able to multi-task very vigorously. Tankless heaters also have a temperature swing of up to ten degrees--five above and five below the thermostat--and the water can run hot and cold when turned off and on. Despite their nickname, instant water heaters are not. When you turn the tap, a sensor turns on a fan, then a burner, and finally the pipes get hot and the water is heated. That means a twenty second wait for the heated water. Tankless heaters tend to get lime deposits which require regular cleaning. Their pilot light is always lit, so the expense of running a tankless heater is not much less than a tank heater. The tankless heater must heat the plumbing the entire way from the heater to the faucet. After the water is turned off, the plumbing cools. This is the major loss of energy in the system. When the tankless heater is turned on again, it must reheat the pipes anew. Tankless heaters have had reliability issues in the past, when the product was brand new. These bugs have been ironed out but the companies making tankless heaters have had quality issues previously and could again. There are many companies making claims regarding the superiority of tankless heaters. When comparing, be sure to use similar models, not a high end heater versus a lesser model. Check into some consumer report web sites or forums with real reviews from real consumers to help you make you decision.