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Conference proceedings

Field evaluation of two demand electric water heaters

Johnson R, Clark C ...see all

ASHRAE Transactions, vol. 112 PART 1 (2006) pp. 426-435

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Abstract

Electric demand water heaters were tested in two homes and compared
to customers' existing gas and electric storage water heaters. Findings:
� The demand water heater will save the tested customers about 50
per year compared to their storage electric water heaters. � The
savings was equivalent to the storage water heater's standby loss.
� The electric demand water heater was nearly twice as expensive
to run as the gas water heater at local utility rates. � Both test
participants were satisfied with the hot water service provided by
the demand water heaters. Neither customer used hot water at more
than three gallons per minute, about the limit at which most demand
heaters can fully heat the water. � Demand water heaters are more
expensive than storage water heaters�the test units cost about 500
to 800 (retail). Installation of the test units costs another 800
to 1200 at each site. [ABSTRACT FROM AUTHOR]

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  • ISSN: 00012505
  • SCOPUS: 2-s2.0-33646680339
  • PUI: 43735379
  • SGR: 33646680339

Authors

  • Russell K. Johnson

  • Craig A. Clark

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