Hello, Probably not going to do this project myself, but getting as much info on this myself before i hire someone. Had inline humidifier in my forced air system many years ago, and its probably time to replace before my wife kills me. She seems to get sick in the winters. She thinks its due to the low humidity. I have a 2000 SF, 1960's 2 story with a basement. Have a new tank-less water heater. I have only enough room on the return side for unit. Would putting new insulation in attic, and having blown in insulation in walls help with keeping humidity levels higher in winter. Would this eliminate the need for a humidifier? What unit would work best while keeping water usage as low as possible? Thanks for any info on this matter. Ednorton

Question: Is this the right way to convert from an older to newer furnace? I had my furnace changed out from 80% to 96% Trane unit with the variable speed blower (XV95). They swapped over my model 700 but said the sensing relay couldn't be used on the blower motor circuit anymore which makes sense being an ICM or ECM motor now. So he wired the sensing relay into the vent motor circuit (inducer motor?) Now the humidifier only runs when the inducer motor is running not the main blower so I get a lot less run time and less humidity control. Is there another better way to wire it?