The Aprilaire 550A humidifier requires annual maintenance consisting of replacing the humidifier filter (water panel evaporator) and washing out the pad frame and water distribution tray. If you need to replace this model with an entire new unit, this model has been discontinued and replaced with the model listed below. All parts are still available for this model. Most are listed below.
Owners Manual & Maintenance Information
Product Info
SKU
Price
Buy
Genuine OEM Aprilaire
More info & photos »
10
List Price: $19.99
Sale Price: $10.95
Genuine OEM Aprilaire
More info & photos »
10QTY2
List Price: $24.97
Sale Price: $20.81
550MAINTKIT
List Price: $77.07
Sale Price: $55.85
4001
List Price: $18.60
Sale Price: $15.50
4004
List Price: $7.20
Sale Price: $6.00
4016
List Price: $54.75
Sale Price: $45.63
4039
List Price: $9,999.99
Sale Price: $9,999.99
4040
List Price: $83.94
Sale Price: $69.95
4184
List Price: $10.65
Sale Price: $8.88
4217
List Price: $21.30
Sale Price: $17.75
4218
List Price: $19.50
Sale Price: $16.25
4223
List Price: $5.10
Sale Price: $4.25
4226
List Price: $14.25
Sale Price: $11.88
4231
List Price: $3.60
Sale Price: $3.00
4737
List Price: $19.50
Sale Price: $16.25
50
List Price: $61.80
Sale Price: $51.50
500
List Price: $307.50
Sale Price: $256.25
500M
List Price: $307.50
Sale Price: $256.25
50333
List Price: $35.38
Sale Price: $29.48
51
List Price: $77.64
Sale Price: $64.70
56
List Price: $142.95
Sale Price: $119.13
58
List Price: $185.25
Sale Price: $154.38
8052
List Price: $13.50
Sale Price: $11.25
DDHW6
List Price: $9.97
Sale Price: $8.31
IQP120
List Price: $109.20
Sale Price: $91.00
