Aprilaire Humidifier Model 550

The Aprilaire humidifier model 550 is one of the best and a high quality humidification system, which operates on the famous evaporative principle. The Aprilaire humidifier model 550 with its performance can provide the exact amount of relative humidity required in you home in the summers and winters.

The Aprilaire humidifier model 550 is one of the best sellers in humidifiers because of its salient features like high quality performance, positive control, minimum maintenance and sufficient capacity. The main aim of the Aprilaire humidifier model 550 is distribute relative humidity in your home so that you can protect yourself, your family and your precious possessions from dryness. Dryness can cause dry nose and itchy skin and also cause cracks in the wall, furniture and paintings.

If you are installing Aprilaire humidifier model 550, then make sure that its installation is in conjunction with the motor of the furnace blower. In times of need or when you need to add some humidity into your home, the humidistat of the Aprilaire humidifier model 550 will automatically gauge the humidity requirement. It has an AutoTrac functionality that can automatically gauge the change in outdoor temperature and accordingly creates humidity inside your home. The furnace blower motor will start operating and this will cause the water to flow into the water distribution panel of the humidifier located at the top.

The Aprilaire humidifier model 550 is a high precision automatic humidifier that has the capability to maintain an accurate level of relative humidity within your home. It can measure even 1º change in the outdoor temperature and after measuring; it can automatically adjust the indoor relative humidity (RH) by 1/2%. To determine the relative humidity in your home, you can follow the below mentioned steps:

  • The first thing to do is determine the outdoor temperature.
  • Then start the motor of the furnace blower. You can do it by setting the thermostat fan switch in the On position. You can also do it by setting the thermostat at a higher temperature.
  • Slowly turn the control dial to an Off position. Once this is done, turn the dial again but this time in clockwise direction till you are able to hear the solenoid valve click. After this, turn the dial in a counter clockwise direction till the time you can hear the solenoid valve click off. At this juncture take a note of the dial settings.
  • Measure the humidity in your home based on the dail setting chart provided in the user manual.