"William W. Plummer" wrote in message
news:K5KYb.213803$U%5.1238186@attbi_s03...
Another
poster pointed out that using higher temperature water will deliver the
required heat in a shorter time, minimizing the time the circulator is
running.




Which would raise the amount of gas or oil one uses to heat the water.
Certainly would cost more than the $14 a month it costs to run the pump!
Greg