No Heat On First Floor

Hot water heating system problem.
No heat on first floor. How to improve heat to a second floor. Forecasted to be cold in a couple of days need to fix this. I think it s the powerhead on the 1st floor zone valve but need to make sure before i buy one. Bad taco 007 circulator pump replaced purged air from heating zones combustion test preformed.
A plug in space heater or two. Call the hvac guy and have him check it out. Most homes have bedrooms on the second floor that need to stay warm and cozy in cool weather so everyone gets a good night s sleep. When your second floor.
We have hot water baseboard 1 circulator 2 zone valves 2 thermostats 1st flr 2nd flr honeywell. Last week 1st flr heat stopped working.