In hydronic heating, to control where heated water goes to various sections of a building, the system might rely on two or more zone valves. A zone valve opens or closes based on demand from a ...

A heat pump functions as a typical air conditioning system in the cooling mode — absorbing heat from indoors and rejecting it outdoors. In heating mode, the coils reverse their functions. The outdoor ...

Thermostatic valve problems can be a real inconvenience, especially during the winter months when you need your heating system to be working at its optimum. They are a key part of a heating system, ...