Seems like every guy in the field knows someone who will pull a permit or use someone's license. I want to see if someone knows the facts. I have heard it all.

What level work can a HVAC journeyman perform?

What level of work can a technician perform with a HVAC Masters License, and a HVAC limited License?

Do you need to be a Master Gasfitter to install a furnace?
-Therefore to do a furnace installation to you need a Master HVAC license and a Master Gasfitter?

Do you need to have a Master plumbing license to install a steam boiler?

I know this all may very state to state, we tend to work in the DMV.

Finally what do I need to get a journeyman in MD and Va.

Reciprocity in DC to MD and Va