Many of the whole home humidifier models come with instructions that make it easy to install them yourself if you have the skills needed for this, but it isn’t always recommended. Furnace humidifiers for your whole home require wiring and plumbing connections that not everyone knows how to do. Sometimes, the warranty doesn’t cover the parts and features of the humidifier if it isn’t professionally installed, so be sure to check this out before you try doing it yourself.