![The house I bought has an old furnace with this Aprilaire unit attached. I see it's a humidifier, but as far as I can tell its main purpose is to let AC The house I bought has an old furnace with this Aprilaire unit attached. I see it's a humidifier, but as far as I can tell its main purpose is to let AC](https://preview.redd.it/c6254pc7mpq71.jpg?auto=webp&s=87a04c70cd414004e30d0c97dd5b4873ffd843fd)
The house I bought has an old furnace with this Aprilaire unit attached. I see it's a humidifier, but as far as I can tell its main purpose is to let AC
![Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums](https://www.doityourself.com/forum/attachments/humidifiers-dehumidifiers/22083d1385604745-nest-2-0-aprilaire-whole-house-humifier-model-110-humidstat-screen-shot-2013-11-27-7.51.25-pm.jpg)
Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums
![Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums](https://i.imgur.com/NHHXtdI.jpg)
Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums
![Aprilaire 10 Water Panel Single Pack for Humidifier Models 110, 220, 500, 550, 558 : Amazon.co.uk: Home & Kitchen Aprilaire 10 Water Panel Single Pack for Humidifier Models 110, 220, 500, 550, 558 : Amazon.co.uk: Home & Kitchen](https://m.media-amazon.com/images/I/61L6jNYZM2L.jpg)
Aprilaire 10 Water Panel Single Pack for Humidifier Models 110, 220, 500, 550, 558 : Amazon.co.uk: Home & Kitchen
AprilAire - We were the first to introduce the whole-house evaporative humidifier in 1954, innovating through the '60s and '70s until today. We'll continue to change the game until every home is
![Aprilaire 10 Water Panel for Humidifier Models 110, 220, 500, 550, 558; Pack of 10 : Amazon.ca: Home Aprilaire 10 Water Panel for Humidifier Models 110, 220, 500, 550, 558; Pack of 10 : Amazon.ca: Home](https://m.media-amazon.com/images/I/71+vngpZH6L._AC_UF894,1000_QL80_.jpg)
Aprilaire 10 Water Panel for Humidifier Models 110, 220, 500, 550, 558; Pack of 10 : Amazon.ca: Home
![Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums Nest 2.0 and Aprilaire Whole-house humifier model 110 with humidstat. - DoItYourself.com Community Forums](https://i.imgur.com/UPkZ5fm.jpg)