Manual humidistat
Was 4016 new improved designed so the adapter plate and clip part number 4039 is no longer required for duct mount applications.
Humidistat-manual control
Buy this part and as many parts as you like and pay only $8.99 shipping, within the Contiguous United States.
All Parts for Aprilaire 440: | ||||
|---|---|---|---|---|
Complete Units | ||||
| Ref. | Image | Part No & Description | Price | |
 | apr600A - Aprilaire Complete Humidifier View Part Info | $177.33 | Add to cart | |
Controls | ||||
| Ref. | Image | Part No & Description | Price | |
 | apr4305 - Gasket Automatic Humidifier Control View Part Info | $4.73 | Add to cart | |
 | APR56 - Humidistat For Autotrac Has Outdoor Temp View Part Info | $92.58 | Add to cart | |
 | apr8052 - Outdoor Temperature Sensor View Part Info | $11.53 | Add to cart | |
| 6 |  | apr4166 - Knob (top Cover) View Part Info | $6.31 | Add to cart |
Covers | ||||
| Ref. | Image | Part No & Description | Price | |
| 14 |  | apr4162 - Top Cover For Aprilaire View Part Info | $116.35 | Add to cart |
Filters | ||||
| Ref. | Image | Part No & Description | Price | |
| 9 |  | aprA12-RPS - Awp-12 #12 Pad Hard Wick View Part Info | $7.99 | Add to cart |
Frames | ||||
| Ref. | Image | Part No & Description | Price | |
| 13 | | apr4171 - Metal Frame View Part Info | $108.31 | Add to cart |
| 8 |  | apr4081 - Distribution Tray For View Part Info | $29.99 | Add to cart |
Hardware | ||||
| Ref. | Image | Part No & Description | Price | |
| 4066 - Screw And Clip Set View Part Info | $16.17 | Add to cart | |
| 2 | | apr4086 - Screw And Clip Set View Part Info | $12.75 | Add to cart |
Hoses, Valves, and Regulators | ||||
| Ref. | Image | Part No & Description | Price | |
| APR4006 - O Ring For Bull View Part Info | $9.99 | Add to cart | |
 | apr4038 - Drain Spud Kit For View Part Info | $14.46 | Add to cart | |
| apr4103 - Stainer For Bullet Shaped Solenoid View Part Info | $19.49 | Add to cart | |
| 1 |  | APR4001 - Saddle Valve For Aprilaire View Part Info | $19.99 | Add to cart |
| 16 |  | apr4167 - Solenoid Cover View Part Info | $19.99 | Add to cart |
| 3 |  | apr4232 - Orifice Blue View Part Info | $4.30 | Add to cart |
| 4 |  | A01-0814-148 - Water Valve 24 Volt View Part Info | $62.42 | Add to cart |
| 4 |  | apr4040 - Water Valve. Can Also Use A01-0814-148 View Part Info | $69.99 | Add to cart |
| 5 |  | apr4004 - In Line Strainer View Part Info | $4.99 | Add to cart |
| 7 |  | apr4079 - Feed Tube And Nozzle View Part Info | $12.17 | Add to cart |
Other Parts | ||||
| Ref. | Image | Part No & Description | Price | |
 | apr4039 - Plate Humidstat View Part Info | $9.33 | Add to cart | |
 | apr4280 - Shock Arrestor View Part Info | $129.20 | Add to cart | |
 | APR51 - Current Sensing Relay View Part Info | $38.68 | Add to cart | |
 | GA50 - Relay Current Sensing View Part Info | $36.00 | Add to cart | |
| 10 |  | apr4080 - Scale Control Insert View Part Info | $0.00 | Not Available |
| 12 | | APR4655 - Manual Humidistat View Part Info | $47.28 | Add to cart |
| 15 | | apr4163 - Lower Housing View Part Info | $120.49 | Add to cart |
Transformers | ||||
| Ref. | Image | Part No & Description | Price | |
| 11 |  | apr4010 - Transformer For Aprilaire View Part Info | $28.40 | Add to cart |
Accessories for all Humidifiers: | ||||
Chemicals for all Humidifiers: | ||||
| Ref. | Image | Part No & Description | Price | |
 | FSRM6 - Humidafresh Rainforest Mist Water Treatm View Part Info | $6.24 | Add to cart | |
| AC802 - Humidifier Bacteriostatic Water Treatmen View Part Info | $6.82 | Add to cart | |
 | 1T-6 - Humdf Water Treatment32 Oz View Part Info | $5.18 | Add to cart | |
 | FSCA6 - Humidafresh Cinnamon Apple Water Treatme View Part Info | $6.24 | Add to cart | |
 | AC816 - Extra Strength Humidifier Cleaner View Part Info | $5.19 | Add to cart | |
 | FSFV6 - Humidafresh Vanilla Water Treatment View Part Info | $6.24 | Add to cart | |
 | 3US-6 - Water Treatment Cleaner View Part Info | $5.01 | Add to cart | |
 | 1PC-RPS - Humidifier Plastic Cleaner View Part Info | $0.00 | Not Available | |
Complete Units for all Humidifiers: | ||||
| Ref. | Image | Part No & Description | Price | |
 | HAP-440 - Holmes Complete Hepa Air View Part Info | $49.99 | Add to cart | |
Other Parts for all Humidifiers: | ||||
| Ref. | Image | Part No & Description | Price | |
 | MSP-100V - Oem Portable Stereo Speaker View Part Info | $16.99 | Add to cart | |
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