Humidifier installation













Answers to Your Humidifier Questions

Heating 1 - Heating 2 - Heating 3 - Air Conditioning 1 - Air Conditioning 2 - Ducts and Vents - Humidifiers

Q. I have an Aprilaire Humidifier. The humidifier works only when I turn it all the way to the maximum setting on the humidistat. Does this mean the humidistat is blown?

A. Usually the humidistat is just a switch that closes on call for humidity; most are low voltage connections. It should be easy to find a replacement.

Q. I have a slop sink that’s about 10 feet away from my furnace. Would it be right to go for the Aprilaire 400 or can I simply run the drain line along the wall to the sink?


A. Sure, go for it - a drain is a drain. Pipe it in with a good fall to the sink.

Q. I'm looking at installing a whole house humidifier. I have a carrier furnace model 58sta1stx.What is the best type of humidifier to get? My house is 3,000 square feet. What does the term by-pass humidifier mean?

A. Installing a humidifier is a good DIY job. By bypass, they mean the humidifier is put on the cold air drop or duct and a small pipe is run over to the heat duct or plenum from it. This lets warm air pass over the water.

Q. I'll be replacing an ancient AprilAire A112 with an A700, and in an effort to avoid last minute trips to a supplier, I have a question for the experts. Is a "sail switch" a viable alternative to an A50? My current A112 has a manual humidistat and a sail switch, but no A50. The furnace has been replaced and I could probably use the humidifier terminals, but it seems a blower sensor is more flexible.

A. A sail switch just has too many reasons why it doesn’t work. Maybe dirt, or perhaps it is out a balance. So the humidifier works best if just on its own, not on the furnace board. That means do get a current sensing relay to use. Check out which one you need: either A50 for 24 volts, or the A51 for 120 volts. They work like an amp probe - just slip around the blower wires. Any time the blower is on, it will turn the humidifier on if the humidistat calls for it.

Visit our Community Forums for more answers to your home improvement questions.

Heating 1 - Heating 2 - Heating 3 - Air Conditioning 1 - Air Conditioning 2 - Ducts and Vents - Humidifiers Can cool mist humidifiers be used with air conditioners?

Cool mist humidifiers effectively moisturize a room, while an air conditioner is designed to keep a room or home cool, temperature-wise. The two appliances can, however, be used simultaneously to achieve an optimal, climate-controlled effect. Consider that:

  • Air conditioners dry out the air in a room, but when used with a cool mist humidifier, the humidity returns to a comfortable level without affecting the temperature
  • Both cool mist humidifiers and air conditioners are used with the windows closed, working in harmony to cool and re-moisturize a space
  • The air conditioner fan or vent will work to spread the cool mist around a room if the humidifier is positioned accordingly

cool mist humidifiers

Using Mini Dehumidifiers

Home Humidifier

Portable Dehumidifiers

Basement Humidifier

Dehumidifier Pump

Whole House Humidifier

How to Clean Your Humidifier

Humidifier Tank

Dehumidifier Installation

Building a Portable Cool Mist Humidifier

Replacing Pin Connectors in a Humidifier

Site map











Карта сайта