Pump-displacement volume is typically determined by gear size. The oil pumps below (left to right) represent two different displacements, as noted by the case size. For high-performance work, a steel ...

Girard Heating and Air Conditioning recently completed a comprehensive heat pump retrofit project at Brook Farm Inn, a ...

Heat pumps are growing in popularity, with more and more people choosing them over oil or gas heating systems. Although they have higher installation costs than conventional fossil fuel heating ...