Doyle is talking about a recent solar application that began with the customer hoping for a cheaper way to heat his pool, and expanded into a combination domestic hot water/radiant heating system ...

He explains how hybrid systems which combine both ... which specialises in plumbing, heating and cooling systems For homeowners, hybrids can typically be ‘retrofitted’ onto existing central ...

a manufacturer of thermal energy equipments such as hot-water supply and air-conditioning has combined gas and electricity optimally to develop a hybrid hot water supply and heating system titled ...