Best Whole House Humidifier
A lot of people have actually asked me over the years, which is the best whole house humidifier? This is a tough question to ask as there are many decent brands and products on the market. My personal favorite is the Aprilaire models as they seem to be a little more advanced and modern. Take a look at this Aprilaire model 600 for example. 
Once ducted into your house this unit will cover all your needs. It comes with a digital controller unit that will allow you to set your desired humidity and it also monitors the outside temperature to adjust the unit to prevent condensation on the windows of your home. This could lead to mold and other damp problems which kind of defeat one of the major health purposes for having this in the first place!
A unit like this consumes a low amount of power and also runs almost silently so it will not disturb you at night. For more information and customer reviews click here.
Another great product that I would recommend is the Essick Air 4D7 300 whole house console style humidifier. Although not quite as advanced as the model above it will do a job of keeping the humidity level in your home at the optimum.
It has variable motor speed settings with night time quiet mode and also an automatic cutoff for safety. This model is designed to blend in with your furniture and with the high quality wood finish it really does look good. You also get air care filters to help clean up your air quality even further.
To learn more information on the Essick Console Humidifier click here
Venta Airwasher LW24 Air Humidifier and Purifier All-in-one is a powerful unit for your home. Not only will it help to increase the humidity level to the optimum level but it also has an advanced air cleaning
system which literally purifies the air at the same time.
This unit is really quiet and will be perfectly suited for use in the bedroom. It is odorless and all the dirt taken out of the water and air remains in the tank. This unit uses water as a natural filter, no expensive and filthy pads to replace. Many people have stated that it is very easy to clean. Check it out here.
The few examples above are some of my recommended whole house humidifier units but there are many more on the market. I would say that the three above represent the major brands and I would personally stick with a model which has been manufactured by one of these guys for peace of mind.
Most of these units would require a professional installation and I would advise against trying to do this yourself unless you are qualified!!