Circulation pumps

2. Pros:
 Hot water is virtually instant

3. Cons:
 The water loses heat as it travels through the house and
must be heated up again
 Studies show that people only use hot water 5% of the time
yet the line is hot all the time - high waste of energy
 Most leaks happen in the hot lines with circulation pumps
 How can the cold line be used to move cool water back to
the heater?

4.  If a circulation pump is installed on or near a heater on the
hot line out in to the house and a bridge valve, or crossover
valve, is under the farthest fixture a continuous loop is
established.
 Hot and cold water are pressure balanced in a home. The
pump helps the hot side overcome the cold side.
 Once hot water reaches the bridge valve the valve closes so
that no more water can be pushed into the cold line and
the large syringe pump shuts off.