About two months ago I replaced my air conditioner and a furnace with a whole house humidifier. The furnace is located in the attached garage. Last week I noticed water dripping from the valve that connects the hoses to the humidifier. When I called the installer he said likely the valve froze up, when we had 2 degree temps, and cracked so he would need to install a new one. I asked him how this could be prevented in the future and he said there wasn't a way to prevent it from freezing since it was located in the garage. When I suggested some type of insulation, he laughed it off and said that wouldn't help. I am not real happy with him right now as I feel if he is installing humidifiers on furnaces located in a garage then he should know how to prevent freezing of the equipment.
Any ideas how to keep a whole house humidifier located in the garage from freezing? Also thought about getting a heater.