Thoughts on Tankless Water Heaters

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

There is a great deal of discuss the benefits and drawbacks of tankless water heaters verses tank water heaters. Water Heater Repair Cincinnati is going to start a discussion on tankless heaters today, explaining a few of the claims and talking about the realities. They have advantages and downsides over conventional water heaters and it might simply depend upon what ones specific usage needs are that will determine which sort of the proper one for ones house. Water Heater Repair Cincinnati

The basic concept of using a tankless water heater is among being energy efficient. Water is heated up as it is used, and not kept in the large tank of a conventional water heater, regularly heated so it is ready whenever it is to be made use of. Likewise, since they can hold on the wall and take up practically no space at all, they are extremely practical.

Electrical Usage

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

When it comes to 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.”

Appropriate Sizing

Tankless systems are sized by the flow rate determined in gallons per minute (GPM). One will need to figure out when and what ones highest need of hot water is to correctly identify the very best size unit to get.

Below 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 have to be examined also in order to get the most out of a tankless water heater. If ones water is high in mineral material, like calcium, they will build up on the coils over time and lower the life span of the unit. If the water hardness at ones house is above 11 grains per gallon, a water softener would be advised. Producers do include de-liming directions and usually have a warning light on the system to identify when this must be carried out. Nonetheless, keep in mind what the manufacturers guarantee covers. If it is simply against producer’s defect, this will not cover any repairs required due to ones water quality. In perfect conditions, a tankless system will last much longer than a standard water heater, which can assist validate the higher initial product expense and setup costs, however one will have to bear in mind keeping it running effectively to make back ones financial investment.

Service and Repair Costs

These costs are normally higher for a tankless system than a traditional water heater, just to have a heads up. Many individuals normally do not have their standard water heater services too regularly (sadly) but it is advised to have a tankless device professionally serviced when a year.

Instantaneous Hot Water

This must not be that big of a deal, however though makers do advertise instant hot water. Certainly one understood that it takes a moment for the hot water being heated right away to travel 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 could not ignite if the faucet is not opened up more. As an example, a flow rate of .5 gallons to 2 gallons per minute is needed for electric tankless heaters to heat water.

Depending on the quantity of hot water one requires at the very same time, more than one device will should be installed. This is easy to do, however certainly increases the equipment expenses at the same time.

Equipment and Set Up Costs

A typical price range for tankless heaters is around $800 to $1200. A typical storage 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, as well as a different gas pipe setup (if making use of a gas tankless heater), and a brand-new ventilation system. An advantage of replacing ones water heater with a system much like the existing one is most of these upgrades will not be required – they are already st up.

Benefits of Going Tankless

No stored water, which in itself has numerous benefits. Initially, if there was to be a leakage with a tank heater, there can potentially be water damage to ones house. Also, one need to flush the tank at least once a year to keep mineral build up reduced, however there is the potential for stinky water odor, bad tasting water, and the growth of legionella bacteria in the tank if it is not at a high enough temperature level. Standard water heaters use up much even more space also.


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 indeed, tankless systems will utilize less gas than a traditional gas water heater which does have its ecological advantages. Nonetheless, a lot of electricity is utilized, for electricity takes longer to heat water than gas. And, many electricity is produced from burning nonrenewable fuel sources.


As with any sort of innovation, the field of water heating is ever advancing. Efficiency advances are increasing with traditional gas and especially electric storage type water heaters. There are different advantages with tankless and traditional heaters that one will have to think about. Do not be reluctant to let Water Heater Repair Cincinnati know of any questions you may have in the decision procedure.

Check out our Tankless Water Heater Repair Cincinnati page too!