The Stitt Group began as a DIY home project in 1975 when Orlo and David Stitt installed a solar water heating system on their ...

Compared to conventional heat pumps, the system was also found to reduce electricity consumption by 9.4% on a low solar day. “For one month of operation, the overall COP of the DX-SAHP and ...

We also installed roof jacks (to hold up the solar array) and then a new composite shingle roof. Finally, in July, we put in a whole-house cooling fan and whole-house heat-recirculating system (as ...

German heating specialist Vaillant and the Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) have presented a new heat pump concept at the ISH Frankfurt trade fair this week. “The ...

A German company has debuted a new photovoltaic roofing tile that could help change how homes around the world are powered.

Geothermal systems use the sustained temperature of the ground to heat or cool a home. A ground loop system absorbs heat energy (BTUs) from the earth so that it can be transferred to a heat pump ...