I am interested to replace my existing humidifier Aprilaire 110. This humidifier run but no humidity in my house.Valve works properly,fan rotate water flow is o.k. I am planning to install Aprilaire 700M but I may face same problem. Can You recommend which will work with my furnace which has condensing/coil unit installed in the plenum for central air cond.
The 700M would be the direct replacement for the 110 humidifier. If you humidifier is still working, you may not need to replace it.
Both of these units mentioned can operate independent of the heat call…. giving you more opportunity to create humidity. Especially if you have upgraded your furnace and it has short run times for heat. You would just need to run hot water to them, and have the humidistat wired to recognize a fan call, and you can create humidity that way.