Tankless Water Heater ComparisonsThe Inefficient Tank Water Heater
Traditional electric or gas tank water heaters have been used in commercial and residential properties since the early twentieth century. Conventional tank heaters use a simple heating element and tank technology that, with the exception of some fairly recent gains in the area of energy efficiency, have remained virtually unchanged over the last 25 years.
Because of this inefficient process, a 60-gallon tank only has 45 gallons of useable hot water. The other 15 gallons are lost as cold water is added to the tank during the usage process.
In addition, a Conventional tank heater is constantly radiating heat (loss), which also contributes to the re-heating rate and energy consumption. This type of heat loss is often referred to as "stand-by" heat loss. By eliminating stand-by heat loss alone, energy consumption can be reduced from 20 to 30%.
Consider the following comparative
Yearly cost savings comparisons for tankless heating systems compared to traditional electric and gas tank heating systems are attached as Appendix 1. These comparisons are based on the U.S. Department of Energy Hot Water Usage Guidelines as reported on the Energy Efficiency and Renewable Energy Clearing-House. Energy Factor and Average Annual Operating Costs based on D.O.E. (Department of Energy) test procedures. http://www.eren.doe.gov/femp/procurement/calc_waterhtr.shtml
The Environmental Costs of Energy
Reducing the amount of energy used to heat water will reduce the amount of fossil fuels consumed and therefore the amount of resulting greenhouse gas emissions. A 50% reduction in energy consumption could result in a 50% reduction in the harmful effects, resource depletion, and infrastructure costs of supplying that power.
It has been reported that if wasteful tank heaters were replaced with high-efficiency tankless models, North American society could annually save:
· 290 million gallons of fuel
oil a year;
Energy Saving Facts
The U.S. Department of Energy's Energy
Efficiency and Renewable Energy Network released a brief (see Appendix
2) on the benefits of demand (tankless or instantaneous) water heaters
for energy efficiency where it is stated that Water heating accounts
for 20% or more of an average household's annual energy expenditures.
Since water heating is often the largest single component of energy
expenditure in many households, a reduction of 50% of this component
can result in significant overall savings. This US government document
is somewhat dated, and our tankless water heaters were not part
of the evaluation process used to reach the conclusions contained
therein. Nevertheless, we believe most of the information is correct
except that our tankless water heaters provide greater ease of use
for whole house applications and offer greater savings potential
as a result of the superior state of the art technology.
Bacterial Respiratory Disease Health