In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
My sister's home is heated by a 140000 btu burnham boiler that feeds a 2 pipe steam system. There are two separate mains without vents. The only vents are located at the top of the dry return where it drops to join the wet return.(Total of 2 vents- one for each dry return)
Her complaint is that the house heats unevenly and some radiators do not get hot.
The radiators do not have thermostatic traps that I can see. Might they be internal or none at all?
The system also does not have an f&t trap.
What am I missing here? Would vents on the steam main help or just replace the dry return vents?