Aprilaire 112 Humidifier Parts

The Aprilaire 112 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. Most parts are still available for this model and are listed below.

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12 Humidifier Filter
Reg. $19.55
$16.21
Water Panel (Humidifier Filter)
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4001 Saddle Valve
Reg. $21.00
$17.50
Saddle Valve
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4004 Strainer Screen
Reg. $6.90
$6.00
Strainer Screen
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4005 Solenoid Valve Assembly
Reg. $100.62
$87.50
Solenoid Valve Assembly
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4011 Fan Motor
Fan Motor "NO LONGER AVAILABLE"
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4016 Analog Humidistat
Reg. $57.50
$38.45
Analog Humidistat
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4021 Red Orifice
Reg. $4.25
$3.00
Red Orifice
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4023 Scale Control Insert
Scale Control Insert (NO LONGER AVAILABLE)
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4025 Closure Clip Set
Closure Clip Set (NO LONGER MADE AND NOT AVAILABLE)
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4038 Drain Spud Kit
Reg. $7.47
$6.50
Drain Spud Kit
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4039 Duct Mount Adaptor Plate
Reg. $11.04
$9.60
Duct Mount Adaptor Plate
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4258 Control Relay
Reg. $132.81
$110.67
Control Relay
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50 Current Sensing Relay
Reg. $49.45
$43.00
Current Sensing Relay 24 Volt Style
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50333 Multi Tap 48VA Transformer
Reg. $23.57
$20.50
Multi Tap 48 VA Transformer
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51 Current Sensing Relay
Reg. $66.24
$55.20
Current Sensing Relay 120 Volt Style
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56 AutoTrac Humidistat Controller
Reg. $110.40
$85.12
56 Aprilaire AutoTrac control system.
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58 Automatic Humidistat Controller
Reg. $180.56
$157.99
58 Automatic Humidistat Controller
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Aprilaire 700 Humidifier
Reg. $457.48
$397.81
Aprilaire 700 Humidifier
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8052 Sensor
Reg. $15.29
$13.57
Outdoor Air Sensor
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