Hello! We recently moved into a 1950's home with gas-fired forced air heat and central air. The house is a 2000 square foot ranch built on a slab. The HVAC ducts are built into the slab. The furnace is a modern unit -- just 2 or 3 years old. The windows are relatively new double-pane with wooden sashes. We're located in northwestern Ohio. Now that cold weather is here, the humidity in the house is very high. All of the windows are "sweating," to the point where they are dripping onto the wooden sills. The house often feels cold and clammy, even when the air temperature is high. My sister's nearby home, which is also built on a slab, has exactly the same humidity problem. Nearby homes with basements don't seem to have this problem. Questions: 1. Is the fact that the HVAC ducts are built into the slab a contributing factor to the humidity problem? If so, what is it about this arrangement that causes the high humidity? 2. Are there other likely causes? 3. What the best way to remedy this problem? We have a small portable dehumidifier, but it is not up to the task. We can buy a bigger dehumidifier, but I would really like to find a solution that is quiet and does not involve emptying heavy containers of water several times a day. I am physically handicapped, and emptying the containers is difficult for me. I need a no-hassle solution. I'm accustomed to houses that are too dry in the winter. This is my first experience with one that is excessively humid during the cold months. Thanks in advance, Jeff

I would like to replace the installed saddle valve of my Aprilaire 760 with a copper T and ball valve. Can anyone give me a reason that this would not be a good idea? I am not a fan of saddle valves, and I don't think the humidifier is getting an adequate supply of water to properly humidify our home.