hydoheat

[Utilitygirl]

HOW CAN THE HEAT AND AIR RUN AT THE SAME TIME? HOW CAN YOU TELL THIS IS HAPPENING? I HAVE NOTICED ON THE WATER HEATER THE COLD WATER INLET AND THE HOT WATER OUTLET ARE BOTH HOT. IS THIS A DESIGN FLAW? SHOULDN'T THERE BE A BACKFLOW SOMEWHERE TO KEEP THE COLD SIDE COLD? JUST CONFUSED????

Utilitygirl