Do high-efficiency washing machines use more electricity than conventional machines? No 75% Not sure 25% Get Free Quotes Today! Question: Do high-efficiency washing machines use more electricity than conventional machines? Top Answer (75% of 12 votes): No. Answer: No Explanation: yes about 50% less electricity is used La Rose Home Repair Get Free Quotes Today! Find Local Pros Free Electric Appliance Installation Cost Estimates Related Questions Am I required to install a garbage disposal when installing a dishwasher?Top answer: Never What is the difference between a gas dryer and an electric dryer? What is a washing machine agitator? Do washing machines have filters?Top answer: Yes Does a washing machine have a transmission?Top answer: Yes