Taco’s SmartPlug optimizes hot water system efficiency and reduces electrical consumption up to 94%.

Johnson Controls’ Premium Efficiency vertical-stacked water-source heat pumps offer efficiency.

Renewable energy and technological innovations are key elements of design approaches.

Renewable energy and technological innovations are key elements of design approaches.

Replacing electric water heaters with Energy Star-certified hybrid models.

Details matter when adding a pellet boiler to an existing system.

For the first time in the competition’s history, the 16 Solar Decathlon 2017 teams will be competing for $2 million in prize money.

The 2015 International Solar Energy Provisions and Commentary is a comprehensive resource to address the needs of the solar energy industry.

Armstrong Fluid Technology’s Generation 3 Design Envelope pump line features 33 advanced energy-saving models.

Plumbing & Mechanical columnist John Siegenthaler has written a new book, “Heating with Renewable Energy.”