I'm pretty sure it is a hot water baseboard system, no ducts or fans.You also want to turn it on so any dust in the ducts can be blown out NOW rather than once the floors are newly done and all your furniture is in the house! In fact, if you have a heating system where you can turn on just the air fan function, you might want to run it for a while to remove any dust from the ductwork that has been sitting unused before the floor man comes.
I was not real fond of that chore when we had baseboard hot water heat. If it isn't done the furnace/pump will run a lot more and a lot less heat will get into the rooms.The fins on the baseboards do get dust and stuff, and the fronts should be taken off at least once a year and just a good vacuuming, but I know people that have not done it since who knows ?????
OMG! That is not a "break"! LOL You do tooooo much! I am amazed at all you do with those bad knees. Once you get them fixed you will be H*&^*% on wheels!I did get a half hour+ break or so, when we got the first bag filled, and they had to move it and set up the bagger for the second bag, I ran home, got all the laundry off the line and went by Wendy's and got "meals " for everyone so that they could keep going.