This item is a special order from the manufacturer. Your order will typically ship in 5 to 20 business days.
This part may fit other models. Please contact us if you require additional assistance.
Base 550
4219, APR4219, 01/04/4219, 847002
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | apr600A - Aprilaire Complete Humidifier Quantity: 1 View Part Info | $262.65 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| 15A |  | APR56 - Humidistat For Autotrac Has Outdoor Temp Quantity: 1 View Part Info | $183.62 | In stock |
| 18 |  | apr4305 - Gasket Automatic Humidifier Control View Part Info | $7.80 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| 7 |  | apr4222 - Cover With Latch And Label View Part Info | Not Available More information | |
| 17 |  | apr4225 - Cover Latch Spring View Part Info | $13.98 | Out of Stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | a10wr - Wicking Style Filter 709, Paper Material Quantity: 1 View Part Info | $15.40 | In stock | |
| 1 |  | a10 - Aprilaire #10 Pad Hard Wick Quantity: 1 View Part Info | $16.43 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| APR4598 - Ionizer Frame Assembly Quantity: 1 View Part Info | $173.45 | Special order |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| 8 |  | apr4223 - Sold Each...drain Spud For Aprilaire Quantity: 1 View Part Info | $6.42 | In stock |
| 9 |  | apr4040 - Water Valve. ** Read External Info** View Part Info | $66.78 | In stock |
| 10 |  | apr4004 - In Line Strainer Quantity: 1 View Part Info | $3.99 | In stock |
| 11 |  | APR4001 - Saddle Valve For Aprilaire View Part Info | $9.99 | In stock |
| 12 |  | APR4231 - Orifice Yellow Quantity: 1 View Part Info | $2.66 | In stock |
| 16 |  | apr4184 - Nozzle For Aprilaire View Part Info | $13.44 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | GA50 - Relay Current Sensing Quantity: 1 View Part Info | $43.96 | In stock | |
 | APR51 - Current Sensing Relay Quantity: 1 View Part Info | $47.73 | In stock | |
 | apr4280 - Shock Arrestor View Part Info | $129.20 | In stock | |
 | apr4039 - Plate Humidstat View Part Info | $13.50 | In stock | |
 | APR4040OEM - Water Solenoid Vavle ( Oem ) View Part Info | $126.44 | In stock | |
| 3 |  | APR4793 - Maintance Kit-see Desc For What Is Incl View Part Info | $96.88 | In stock |
| 4 | APR4219 - Base 550 View Part Info | $75.21 | Special order | |
| 15B |  | APR4655 - Manual Humidistat View Part Info | $79.54 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| 5 | APR4220 - End Panel Model 550 View Part Info | $57.12 | Special order | |
| 6 | APR4221 - Duct Panel View Part Info | $70.76 | Out of Stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | apr8052 - Outdoor Temperature Sensor View Part Info | $16.12 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| 14 |  | apr4010 - Transformer For Aprilaire Quantity: 1 View Part Info | $42.54 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
| 13 |  | apr4226 - Feed Tube With Compression View Part Info | $14.68 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | AC-912 - Pan Tabets ( 6 Pack) View Part Info | $13.65 | In stock | |
 | 246 - Humidifier Treatment View Part Info | $15.65 | In stock | |
 | T812 - Cutting Board 8 X12 Inch View Part Info | $4.99 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | FSRM6 - Humidafresh Rainforest Mist Water Treatm Quantity: 1 View Part Info | $11.03 | In stock | |
 | FSCA6 - Humidafresh Cinnamon Apple Water Treatme Quantity: 1 View Part Info | $11.15 | In stock | |
 | FSFV6 - Humidafresh Vanilla Water Treatment Quantity: 1 View Part Info | $5.13 | In stock | |
 | AC802 - Humidifier Bacteriostatic Water Treatmen Quantity: 1 View Part Info | $11.28 | In stock | |
 | 1T-6 - Humdf Water Treatment32 Oz Quantity: 1 View Part Info | $11.80 | In stock | |
 | AC816 - Extra Strength Humidifier Cleaner Quantity: 1 View Part Info | $11.22 | In stock | |
 | FSOB6 - Humidafresh Ocean Breeze Quantity: 1 View Part Info | $5.13 | In stock | |
 | 3US-6 - Water Treatment Cleaner View Part Info | $11.22 | In stock |
| Ref. | Image | Part No & Description | Price | |
|---|---|---|---|---|
 | 21581001 - Worm Gear Clamp, 5 5/8 - 6 1/2 Quantity: 1 View Part Info | $1.99 | In stock |
4.7
