My existing steam humidifier was a Honeywell Truesteam, installed on the furnace and it had failed. Horizon tried to get it to work, but could not. They did inform me there is still a warrantee (which I would not have thought of, as we bought the house with the humidifier in it - good honesty on their part). I wanted a more reliable steam humidifier, and they recommended the General Air. Matthew was very patient with me spending time to give me details and numerous installs on this units with little issues. They installed it quickly, and when I had a problem with it, they came back and found a furnace relay to be the issue and replaced it without charge. Very courteous, honest, and prompt service. Would highly recommend them for any furnace or humidifier work