If you have problems with the vents in your heating & cooling system, it will surely cost you some money, so you should take action as soon as you notice that something is wrong.
Symptoms of leaky vents include moisture around them, as well as water spots on the ceiling. This problem is caused by condensation and happens especially in the summer, when the air is very hot and meets the cold air ducts. If ducts are insufficiently insulated, or if the duct boot is not properly sealed, condensation is likely to appear and cause moisture that becomes visible on the walls and ceiling.
If you want to get rid of this problem, you should contact HVAC Denver CO professionals, as there may be multiple solutions, depending on particular factors. You may need to install more insulation in the attic, to prevent hot and humid air to enter the house. You may also need more duct insulation, or seal properly the duct boot to prevent air leaks in the vent.
Seams and connections in your ductwork must also be properly sealed, as they prevent condensation and also contribute to more comfort and energy savings.
Not least, make sure the ductwork is dry and free of mold and mildew.