Model 550 Series Parts
Replaceable components for Aprilaire Model 550 humidifiers. Distribution trays, scale control insert more. All parts are shipped in "single" carton quantities.
The Model 550 was first introduced in 1989. This is a "bypass" humidifier. The Model 550 was in production until 2006. The replacement bypass humidifier for this model is the Model 500 or 500M.
4004 In Line Strainer
All Models except 350, 360, 445, 445A, 448, 110 and 112
The In-Line Strainer is a tiny strainer that fits in the inlet fitting of the water solenoid valve which allows water to enter your humidifier....
4231 Yellow Orifice
Models 400, 400A, 400M, 500, 500A, 500M, 550, 550A, 558, 560, 560A, 568, 600, 600A, and 600M.
These are the tiny nylon components which, accurately meter the flow of water into your humidifier. They allow a specific amount of water to go into t...
4223 Drain Spud - For Models All 500 & 600 Series
All 500 and 600 Models. 560, 560A and 568
This is the plastic fitting which attaches to the base of the housing of your humidifier. It is designed to allow for the connection of the 1/2" d...
9960 Weather Station
9960
Digital Weather Station. Operates on one AAA battery. Displays current temperature and relative humidity. Displays in Celsius or Fah...
Purchase any Humidifier water panel or maintenance kit and receive a free weather station. Promotion is for new orders placed between February 1st and February 29th, 2012.
4184 Nozzle - For Model 350, 360, 550 and 560 Series
Model 350, 360, 550 and 560
This is the component where the feed tube slides into at the top of the water panel evaporator assembly. The nozzle attaches to the water distribu...
4226 Water Feed Tube - For Models 550, 550A & 558
Models 550, 550A and 558
Water Feed Tube w/Compression Sleeve. Connects to the solenoid valve and delivers water to the distribution tray, part number 4218. Also s...
4793 Maintenance Kit for Aprilaire Model 550
For use in the Model 550.
This kit includes everything you need to make your Aprilaire Model 550 Series like new: #10 water panel, #4217 Scale Control Insert (black plastic fra...
Purchase any Humidifier water panel or maintenance kit and receive a free weather station. Promotion is for new orders placed between February 1st and February 29th, 2012.
4040 24 Volt Solenoid Valve
The solenoid valve allows water to come into your humidifier. This valve can be used on all Aprilaire humidifiers ...
4218 Water Distribution Tray - For Model 550, 550A & 558
Models 550, 550A and 558
These are the water distribution trays which distribute water evenly to all portions of the water panel. They attach to the...
4217 Scale Control Insert - For Model 550, 550A & 558
Models 550, 550A and 558
This is the u-shaped component which encases the Water Panel Evaporator. Their purpose is to direct any mineral which builds up back into the evap...
Part # 10 Water Panel Evaporator
Fits Models 550, 550A, 500, 110 and 220.
Water Panel Evaporators are the heart of your humidifier and the component which generates the important humidity to keep you comfortable.The di...
Purchase any Humidifier water panel or maintenance kit and receive a free weather station. Promotion is for new orders placed between February 1st and February 29th, 2012.
