Rinnai Condensing Tankless Water Heaters  Two heat exchangers help Rinnais condensing tankless water heaters save energy and deliver up to 95 percent thermal efficiency compared with gas tank heaters. A concentric venting system for gas appliances withstands varying temperatures and locks into place without glue. All four models are Energy Star qualified. rinnai.us/tankless; 800.621.9419

Two heat exchangers help Rinnai’s condensing tankless water heaters save energy and deliver up to 95 percent thermal efficiency compared with gas tank heaters. A concentric venting system for gas appliances withstands varying temperatures and locks into place without glue. All four models are Energy Star qualified. rinnai.us/tankless; 800.621.9419