Are Tankless Water Heaters Practical

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

There is a great deal of talk about the advantages and disadvantages of tankless water heaters verses tank water heaters. Water Heater Repair Wichita is going to start a discussion on tankless heaters today, pointing out some of the claims and going over the realities. They have advantages and downsides over standard water heaters and it could just depend on what ones certain usage needs are that will determine which kind of the appropriate one for ones house.Water Heater Repair Wichita

The basic concept of making use of a tankless water heater is one of being energy efficient. Water is heated as it is utilized, and not saved in the large tank of a conventional water heater, regularly warmed so it is prepared whenever it is to be used. Likewise, considering that they can hold on the wall and take up essentially no space at all, they are extremely practical.

Electrical Usage

Considering that tankless water heaters do need 240 volts of electricity and as much as 160 amps to establish, one might need to have ones electrical box upgraded to accommodate the power demand of the system. For example, and not to obtain extremely technical here, a conventional tank water heater has around a 4500 watt heating element, verses 4, 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 determined in gallons per minute (GPM). One will require to identify when and what ones highest demand of hot water is to properly identify the very best size system to purchase.

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

Flow rate (GPM)
Temperature rise ( T ºF)

Water Heater Repair Wichita KS

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 needs to be analyzed also in order to get the most from a tankless water heater. If ones water is high in mineral material, like calcium, they will develop on the coils in time and lower the life expectancy of the device. If the water hardness at ones house is above 11 grains per gallon, a water softener would be recommended. Makers do have de-liming directions and typically have a caution light on the system to recognize when this should be carried out. Nonetheless, remember what the producers guarantee covers. If it is simply against maker’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 traditional water heater, which can help justify the higher preliminary product expense and setup costs, however one will have to be conscious of keeping it running properly to earn back ones financial investment.

Service and Repair Costs

These costs are typically greater for a tankless system than a traditional water heater, just to have a heads up. Many people normally do not have their standard water heater services too routinely (sadly) however it is advised to have a tankless system professionally serviced once a year.

Instantaneous Hot Water

This ought to not be that big of a deal, however though producers do advertise instantaneous hot water. Clearly one recognized 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 turning on the faucet a little the tankless heater’s burner might not ignite if the faucet is not opened up more. As an example, a flow rate of one-half gallons to 2 gallons per minute is needed for electric tankless heaters to heat water.

Depending upon the amount of hot water one requires at the same time, more than one system will have to be installed. This is easy to do, however certainly increases the equipment costs at the same time.

Devices and Set Up Costs

An average cost range for tankless heaters is around $800 to $1200. A common tank water heater it is around $300 to $500. Set up expenses are about $1200 and $300 respectively then too. One will, again, most likely need an electrical upgrade, along with a different gas pipe setup (if utilizing a gas tankless heater), and a new ventilation system. A benefit of changing ones water heater with a system similar to the existing one is most of these upgrades will not be needed – they are already in place.

Advantages of Going Tankless

No stored water, which in itself has a number of benefits. Initially, if there was to be a leak with a tank heater, there can potentially be water damage to ones home. Also, one must flush the tank a minimum of when a year to keep mineral build up reduced, however there is the potential 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. Standard water heaters take up a lot 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 point to weigh is that yes, tankless systems will utilize less gas than a conventional gas water heater which does have its ecological benefits. However, a lot of electrical energy is utilized, for electricity takes longer to heat up water than gas. And, most electrical energy is produced from burning nonrenewable fuel sources.


Similar to any kind of innovation, the field of water heating is ever developing. Efficiency advances are happening with conventional gas and specifically electric storage tank water heaters. There are various benefits with tankless and standard heaters that one will should think about. Do not hesitate to let Water Heater Repair Wichita know of any questions you might have in the choice procedure.

Check out our page on tankless heater repairs too!