Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. FEMP [Federal Energy Management Program] Designated Product: Gas Water Heaters Consumer information about gas water heaters, covering efficiency recommendations, cost effectiveness, technology options (such as demand-type and solar assisted water heaters), and other tips for buying and using water heaters. Includes a cost calculator. From the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy. http://www1.eere.energy.gov/femp/technologies/eep_gas_waterheaters.html Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *