The foundation has begun!

In addition to the work on the geothermal heat pump we have been getting started  on the foundation of our net-zero project in Durham.  The foundation for this project has included a combination of 10″ poured concrete walls (where significant retainage is needed)  and standard concrete block where the grade is less severe. The penetrations in the poured concrete wall show the large opening where our mechanicals,  (electri ... Read full post »

Geothermal Heat Pump installation

An exciting and energy/cost saving feature of our future “net-zero” project in Durham is the geothermal heat pump. Geothermal heat pumps are able to heat, cool, and, if so equipped, supply homes and buildings with hot water. A geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger—a system of pipes buried in shallow ground. In the winter, the heat pump removes heat from th ... Read full post »

“Net-Zero” Home in Durham

We have just started a new project in Durham that we are very excited about! The ultimate goal is a net-zero home.   “Net Zero” Energy building is a growing trend.  With the rising costs of traditional fossil fuels as well as the increasing interest in the environment a home that can function autonomously from the energy grid supply is an attractive option. Given current costs of photovoltaics a  true “Net zero” b ... Read full post »