Truths of Tankless Water Heaters

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

There is a lot of talk about the pros and cons of tankless water heaters verses storage tank water heaters. Water Heater Repair Cary NC is going to begin a discussion on tankless heaters today, pointing out some of the claims and talking about the realities. They have advantages and disadvantages over standard water heaters and it may simply depend upon what ones certain usage demands are that will figure out which type of the correct one for ones home. Water Heater Repair Cary NC

The basic theory of utilizing a tankless water heater is one of being energy efficient. Water is heated up as it is made use of, and not stored in the large tank of a standard water heater, constantly warmed so it is ready whenever it is to be used. Also, since they can hold on the wall and take up virtually no space at all, they are extremely practical.

Electrical Usage

Considering that tankless water heaters do require 240 volts of electricity and as much as 160 amps to set up, one may have to have ones electrical box updated to accommodate the power need of the system. For example, and not to obtain excessively technical right here, a conventional tank water heater has around a 4500 watt heating element, verses 4, 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 measured in gallons per minute (GPM). One will have to figure out when and exactly what ones greatest need of hot water is to properly determine the best size device to purchase.

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

Flow rate (GPM)
Temperature rise ( T ºF)

Water Heater Repair Cary

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 too in order to get the most from a tankless water heater. If ones water is high in mineral content, like calcium, they will develop on the coils over time and decrease the life span of the device. If the water hardness at ones house is above 11 grains per gallon, a water softener would be advised. Producers do have de-liming directions and normally have a warning light on the device to identify when this should be done. However, remember what the makers guarantee covers. If it is just 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 standard water heater, which can assist justify the greater preliminary product cost and setup costs, but one will should bear in mind keeping it running correctly to make back ones investment.

Service and Repair Costs

These expenses are typically higher for a tankless system than a traditional water heater, just to have a heads up. Lots of people typically do not have their standard water heater services too frequently (unfortunately) however it is advised to have a tankless unit expertly serviced as soon as a year.

Instantaneous Hot Water

This ought to not be that huge of a deal, however though producers do promote instantaneous hot water. Clearly one realized that it takes a minute 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 turning on the faucet a little the tankless heater’s burner might not ignite if the faucet is not opened up more. For example, a flow rate of 1/2 gallons to 2 gallons per minute is needed for electric tankless heaters to heat water.

Depending on the quantity of hot water one needs at the very same time, even more than one device will should be set up. This is easy to do, but obviously increases the equipment costs while doing so.

Equipment and Set Up Costs

A typical price range for tankless heaters is around $800 to $1200. A common tank water heater it is around $300 to $500. Set up costs are about $1200 and $300 respectively then too. One will, once again, most likely require an electrical upgrade, along with a different gas pipe setup (if utilizing a gas tankless heater), and a new ventilation system. An advantage of changing ones water heater with a system just like the existing one is most of these upgrades will not be required – they are already st up.

Advantages 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 might potentially be water damage to ones house. Likewise, one ought to flush the tank a minimum of when a year to keep mineral build up low, however there is the capacity for smelly water odor, bad tasting water, and the growth of legionella bacteria in the tank if it is not at a high enough temperature. Conventional water heaters take up much more space also.

Efficiency

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 use less gas than a traditional gas water heater which does have its ecological advantages. Nonetheless, a great deal of electricity is utilized, for electricity takes longer to heat up water than gas. And, many electricity is produced from burning fossil fuels.

Conclusions

Similar to any kind of technology, the field of water heating is ever advancing. Efficiency advances are happening with traditional gas and especially electric storage type water heaters. There are different advantages with tankless and standard heaters that one will require to consider. Do not think twice to let Water Heater Repair Cary NC know of any questions you could have in the choice process.

Check out our Tankless Water Heater Repair Cary NC page too!