Tankless water heaters that use natural gas are about 23 percent more efficient than a traditional storage version, which is about 60 percent efficient, according to the Department of Energy. Most gas-powered tankless water heaters do qualify for a $300 federal tax rebate. Many states offer similar incentives.
An LVAD is a mechanical device that helps people when their heart is too weak to pump blood. An LVAD doesnât replace the heart. It assists the heart in pumping oxygen-rich blood throughout the body so that the organs and muscles can function properly. The LVAD system has parts that work inside and outside the body. Inside, a heart pump is attached to the left side of the heart. Outside, a controller, batteries, and driveline help to power and control the heart pump.
A mechanical pump that helps the heart move blood from its lower chamber to the rest of the body and vital organs, the LVAD doesnât replace the heart, but it can provide enough assistance for a badly damaged one to function and â in some cases â heal.