In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I have a cast iron boiler connected to cast iron radiators with 1 thermostat control- one zone. What are the advantages as well as the disadvantages on letting your pump run continuously, with your burner coming on and shutting off solely based on a demand for heat? Will constant flow allow for heat stored in radiators in off cycle to be distributed thourgh out home (ie. - to other radiators ). allowing for even/better heat distribution?