We are getting a geothermal system put in our house in Eastern PA. We have a large Solarium we wanted added to the system since it wasn't heated or airconditioned. We asked for exposed round duct in that room. Our contractor is concerned about all the direct sun exsposure that will hit the ducts. He feels they are going to sweat. I know sweating has more to do with humidity. Does anyone else feel that the ducts being exposed to so much sun will create sweating? Thanks
I attached a picture (hopefully). The duct is going mid level between the balcony and the doors to the first floor. It will be mounted to the brick wall.