2 heating contractors have provided me with proper rad replacements. I currently have cast iron rads and wanted the stelrads.
One of them sized the rads at 160FWT while the other sized the rads at 170FWT.
The ones sized at 170fwt provides me with smaller sized rads since the output btu/h is higher.
However I am wondering what are the disadvantages or advantages of running 160 vs 170fwt.