Truths of Tankless Water Heaters

Posted by on Jan 28, 2014 in Tankless Water Heater Repair Dayton OH, Water Heater Repair Dayton OH

There is a great deal of talk about the advantages and disadvantages of tankless water heaters verses tank water heaters. Water Heater Repair Dayton OH is going to start a discussion on tankless heaters today, explaining some of the claims and talking about the truths. They have advantages and drawbacks over conventional water heaters and it might simply depend upon exactly what ones particular usage demands are that will figure out which kind of the appropriate one for ones home.Water Heater Repair Dayton OH

The basic theory of making use of a tankless water heater is one of being energy efficient. Water is heated up as it is used, and not stored in the large tank of a traditional water heater, regularly warmed so it is ready whenever it is to be used. Also, because they can hold on the wall and use up essentially no space at all, they are very practical.

Electrical Usage

Since tankless water heaters do require 240 volts of electrical power and up to 160 amps to set up, one may need to have ones electrical box updated to accommodate the power need of the device. For instance, and not to get extremely technical right here, a standard tank water heater has around a 4500 watt heating element, verses four, 7000 watt elements of a whole-house tankless one.

As for efficiency, According to the Partnership for Advancing Technology in Housing (PATH), and supported by Housing and Urban Development (HUD), “further testing is needed to determine if electric tankless water heaters will match the efficiency of tank-type heaters.”

Proper Sizing

Tankless systems are sized by the flow rate measured in gallons per minute (GPM). One will should determine when and exactly what ones highest demand of hot water is to correctly identify the very best size unit to purchase.

Here is the formula for figuring this out from Keltec Inc:

Flow rate (GPM)
Temperature rise ( T ºF)

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To determine the size and kilowatt rating you need, apply this formula:
“The result of this formula is the maximum kW needed to accomplish your project requirements for on-demand heated water. Other media will vary slightly. This formula is a nearly universal method of calculation for energy input to yield temperature at required water flow.”

Water Quality on the Tankless System

The quality of the water one has at home demands to be examined too in order to get the most out of a tankless water heater. If ones water is high in mineral material, like calcium, they will develop on the coils over time and reduce the life expectancy of the unit. If the water hardness at ones house is above 11 grains per gallon, a water softener would be suggested. Manufacturers do have de-liming instructions and normally have a caution light on the system to recognize when this ought to be done. However, bear in mind what the producers guarantee covers. If it is simply against producer’s defect, this will not cover any repairs needed due to ones water quality. In optimal conditions, a tankless system will last much longer than a conventional water heater, which can assist justify the higher preliminary product expense and installation costs, however one will have to be mindful of keeping it running appropriately to earn back ones investment.

Service and Repair Costs

These costs are normally greater for a tankless system than a standard water heater, just to have a heads up. Many individuals usually do not have their traditional water heater services too routinely (unfortunately) however it is advised to have a tankless device expertly serviced when a year.

Instantaneous Hot Water

This should not be that big of a deal, but though manufacturers do advertise instant hot water. Undoubtedly one understood that it takes a moment for the hot water being heated immediately to go through ones hot water pipe to the faucet or shower. Though, if one is simply using the faucet a little the tankless heater’s burner might not fire up if the faucet is not opened up more. For example, a flow rate of .5 gallons to 2 gallons per minute is required for electric tankless heaters to heat water.

Depending on the quantity of hot water one needs at the same time, even more than one system will should be installed. This is simple to do, however undoubtedly increases the equipment costs while doing so.

Equipment and Set Up Costs

An average price range for tankless heaters is around $800 to $1200. A typical tank water heater it is around $300 to $500. Set up expenses are about $1200 and $300 respectively then too. One will, once more, probably require an electrical upgrade, along with a different gas pipe setup (if making use of a gas tankless heater), and a brand-new ventilation system. A benefit of changing ones water heater with a system much like the existing one is many of these upgrades will not be required – they are currently st up.

Benefits of Going Tankless

No stored water, which in itself has several advantages. Initially, if there was to be a leak with a tank heater, there might potentially be water damage to ones house. Also, one ought to flush the tank a minimum of when a year to keep mineral build up reduced, however there is the capacity for stinky water smells, bad tasting water, and the growth of legionella bacteria in the storage tank if it is not at a adequate temperature. Traditional water heaters take up far more space as well.


Here is what Consumer Reports has found: “Gas tankless water heaters, which use high-powered burners to quickly heat water as it runs through a heat exchanger, were 22 percent more energy efficient on average than the gas-fired storage-tank models in our tests. That translates into a savings of around $70 to $80 per year, based on 2008 national energy costs. But because they cost much more than storage water heaters, it can take up to 22 years to break even longer than the 20-year life of many models. Moreover, our online poll of 1,200 readers revealed wide variations in installation costs, energy savings, and satisfaction.”

The Center for Energy and Environment says that “A 37% savings of water heating energy per household was found for replacing a typical natural draft storage water heater with a tankless one. However, this savings was not enough to offset the high incremental cost resulting in paybacks from 20 to 40 years.”

Finally, the National Rural Electric Cooperative Association concludes that “Tankless water heaters generally aren’t as energy efficient as well-kept tank water heaters. Insulation, temperature setback, timers, and heat traps can all lower energy costs with tank water heaters.”

One indicate is that yes, tankless systems will use less gas than a conventional gas water heater which does have its environmental benefits. Nonetheless, a lot of electrical energy is made use of, for electricity takes longer to heat up water than gas. And, the majority of electrical power is produced from burning fossil fuels.


As with any kind of technology, the field of water heating is ever evolving. Efficiency advances are increasing with conventional gas and specifically electric storage tank water heaters. There are different benefits with tankless and standard heaters that one will need to consider. Do not hesitate to let Water Heater Repair Dayton OH know of any concerns you might have in the decision procedure.

Check out our Tankless Water Heater Repair Dayton OH page too!