Summary: I've had my Aprilaire Model 600 installed on my forced-air furnace since October of 2004; overall, it has lived-up to Consumer Reports' recommendation.
Pros: Adjustable Settings, Easy To Use, Lightweight, Quiet
Summary: This is by far the best humidifier on the market. It is extremely easy to install and the humidistat that it comes with is a time tested design.
Pros: Adjustable Settings, Easy To Use, Lightweight, Quality product, Quiet
Summary: Great product, easey to install and with good instructions. Did have problem with delivery, water pad was crushed so went out to purchase one on my own!
Summary: Install is fairly easy if you have the tools. Remember to install this unit on the RETURN duct so if something breaks you don't ruin your furnace with water.
Pros: Adjustable Settings, Energy Efficient, Lightweight, Quiet