Businesses in Oahu, Maui and Hawaii counties are eligible to receive a free water cooler timers that can save more than $100 in electricity costs annually per unit based on today’s rates.

The timers are being offered by Hawaii Energy, the ratepayer-funded energy conservation and efficiency program that operates in the three counties. The offer is available through June 30.

Hawaii Energy officials estimate a typical office cooler uses $217 worth of electricity annually on Oahu and slightly more on the neighbor islands. A water cooler timer can save about $123 in power costs annually based on a power rate of 31 cents a kilowatt hour, according to Hawaii Energy.

The timers are available from participating vendors while supplies last. For more information go to www.hawaiienergy.com/timer, or call 839-8800 and (877) 231-8222 on the neighbor islands.