When installing or servicing an air conditioning or refrigeration system, two of the most important tasks performed by technicians are refrigerant recovery and system evacuation. To perform these ...

Refrigerant recovery machines are to contractors what HVAC systems are to homeowners. Heating and cooling systems are usually the most expensive pieces of equipment in a house, and they need regular ...

A while back, I addressed the energy savings potentials behind a drain waste heat recovery heat exchanger. It has the potential of reducing energy consumption of residential applications by as much as ...