e say the windows they sell aren't the best. And in there defense, they aren't lying or trying to mislead you, not all of them anyway, that is just what they have been told by the manufacturer's sales reps and who are they to say different.Another point worth mentioning is there are many different brands of windows out there that are made very well. But, it is not just the brand you have to look at. Every manufacturer makes several levels of their product to meet various budgets. So just because a window is a certain brand, that doesn't mean the specific series you're looking at is a great window.There are certain things to look for in a window, including energy efficiency, construction, style and most importantly, warranty. A quality window will rank high in all of these categories, not just one or two. When comparing windows, rank them in each of these main four categories with a score of one to five and see how they total up. Also, if a window doesn't score at least a 3 in each, don't even consider using it.Make sure to look for Energy Star qualified windows as well. Any replacement window that meets their standards should receive a high score in that category. You should also consider a few other things like low maintenance and easy cleaning. These two factors may be the determining factor if several of the ones you're looking at appear equal in terms of the four main considerations described above.Now there is another thing you should really consider, and that is the installation. Most home owners are not capable of installing vinyl replacement windows so a professional will be needed. And I highly recommend choosing one even if you think you are up to the task. A pro and I mean a real professional with good refere(2) droplets, (3) ice.A little condensation is quite normal, and moisture can add to the comfort of an extremely dry home. However, excessive condensation can cause damage to paint, wallpaper and plaster if not controlled. The good news is, condensation can be controlled by reducing the sources of humidity within your home to an acceptable level of comfort.Outdoor CondensationDuring the spring, summer and fall seasons, when warm days are followed by cool nights, moisture may collect on the outside pane of glass on your windows. This collection of droplets is called dew, and is the same type of condensation you may see on your car windshield or lawn in the morning.Insulating glass units utilizing high-performance glass systems are designed to reduce the amount of heat that flows from the inside of your home, to the outside of your home, during colder weather. By keeping more heat inside your home, the outside surface of the insulating glass unit stays colder. When the glass surface of your windows falls below the dew point (that's when water vapor in the air begins to condense), condensation forms on the outside glass surface.Therefore, if you see condensation on the outside of your windows, this is visible evidence that your energy is being saved, and that your window investment is paying off.Helpful Hints to Control Condensation from University of Minnesota Engineering Laboratory1. Shut off furnace humidifier and any other humidifying device in your home until condensation subsides.2. Be sure that louvers in the attic or basement crawl spaces are open and that they are large enough to allow adequate air flow.3. Run kitchen or other ventilating fans while cooking.4. Run exhaust f