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Aprilaire 550 humidifier Parts
Here are the diagrams and repair parts for Aprilaire 550 humidifier, as well as links to manuals and error code tables, if available.
Owner’s manualBy Schematic
SELECT DIAGRAM
Browse Parts for 550 Humidifier
Model 550 diagram
Transformer
Part #4010
The manufacturer no longer makes this part, and there's no substitute part
Model 550 diagram
Wick Pad
Part #10
The manufacturer no longer makes this part, and there's no substitute part
Model 550 diagram
Orifice
Part #4231
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Current Sensing Relay
Part #50
The manufacturer no longer makes this part, and there's no substitute part
Model 550 diagram
Panel
Part #4221
The manufacturer no longer makes this part, and there's no substitute part
Model 550 diagram
Valve
Part #4040
The manufacturer no longer makes this part, and there's no substitute part
Model 550 diagram
Valve Sadd
Part #4001
The manufacturer no longer makes this part, and there's no substitute part
Model 550 diagram
Cover Latch Spring
Part #4225
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Temperature Compensating Humidistat
Part #55
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Tube-drain
Part #4047
The manufacturer no longer makes this part, and there's no substitute part
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