a HVAC professional that I know measured the temperature drop on the return on the hot water circulator boiler system in my house (older, home was built in late 50's). He said the drop was not enough, indicating sediment/ and or air bubbles in the system. My problem is, he does not service...
Thanks first to all the experts out there,
In my building a circulator pump was changed.
The original pump was a 15A - 1/2 horse pump.
It was replaced by a 10A - 1/3 horse motor.
The same RPM's
Could you comment on the possible effects this may have had on the system please? Could...