Vitaliy Zakharov

A calculator for finding EDR(Equivalent Direct Radiation) for a cast iron radiator in a hydronic heating system. Also provides BTU output for steam/wa …

A calculator for finding EDR(Equivalent Direct Radiation) for a cast iron radiator in a hydronic heating system. Also provides BTU output for steam/wa …

A quick and easy to use electrical box fill calculator according to NEC Section 314.16- Immediately displays current box fill- Built-in matcher for th …