I aquired a US Stove Co hot shot 1400 series with two seasons of use on it for a trade....... so nothing into it money wise, so why not make it better? I removed the twin factory blowers rated at 6.8 amp for the pair and installed a lennox ecm variable speed blower motor ( full running cfm and pulling only .40 amp now.) I 'm not finished with the install yet as far as tying in the return air and do not have the humidifier pictured yet. For controls I'm using a lennox g61v 2-stage variable speed furnace control board and am using the cooling circuit. The fan limit is now converted to 24 volt and the humidifier powered by the 24 volt y/c coolong circuit. I'm running two stages of air speed with this setup and the ability to run low cfm constant fan.