Model 4200A Evaporative Humidifier

For Homes Up To 4200 Square Feet Patent Pending

Key Specifications

Manufacturer: GeneralAire
Model Name: 4200A
Part Number: 5951
Type: Humidifier
Typical Application: Forced Air - Ventilation
Gallons Per Day: up to 17
Control: Automatic / Wi-Fi / APP
Vapor Pad Size: 35
Weight (pounds): 3.5
Plenum opening (inches): 9 1/8 W x 12 H
Power (volts): 24
Warranty (Years): 5 years

Maintenance

Replace 1-2 times per season

Features

Maximum Humidity Output Through:
- Low-profile cover that forces air directly through the Vapor Pad® at its warmest point
- Stainless steel distributor tube for cold or hot water supply
- Redesigned cover and chassis to direct hot furnace air directly through the Vapor Pad®
- Reduced Vapor Pad® frame for maximum pad exposure
Left or right bypass installation option
Left or right solenoid valve installation option
Easy Maintenance Through:
- Snap-in-place, easy lift-off cover
- Sturdy two-piece Vapor Pad® frame that easily pulls apart to release & replace the Vapor Pad®

Your furnace sends warm air through the humidifier and a water-soaked Vapor Pad®, evaporating water within the Vapor Pad®. Newly-moistened air is then delivered throughout your home via your home’s duct system. Breathe Healthier® with a GeneralAire® 4200 Evaporative Humidifier.

Other Information

Type: bypass evaporative
Gallons per day: 17 (based on 120° F plenum temperature)
Dimensions (inches): 15 1/4 H x 12 W x 8 1/2 D
Weight (pounds): 3.5
Vapor Pad® replacement: GA35 (GFI #7902)
- Replace 1-2 times per season
For home sizes up to 4,200 square feet
Plenum opening (inches): 9 1/8 W x 12 H
Bypass opening (inches): 6
Pallet quantity (units): 30
Installation: warm air / return air plenum / right of left side
Control: GFX4 digital automatic-control humidistat; controls the furnace blower motor
Power (volts): 24
Warranty (years):

3200-18 RevD - Install Manual - 3200-4200 - JPF - 1-8-2025 - GFI 5800 5801 5950 5951 - USA 3200-18_RevD_-_Install_Manual_-_3200-4200_-_JPF_-_1-8-2025_-_GFI__5800_5801_5950_5951_-_USA-1.pdf
3200 4200 Finding Model & Serial Numbers 3200_4200_Finding_Model__Serial_Numbers-1.pdf
4200-05 Preparing the Solenoid Valve Mounting Bracket for a Left to Right Side Installation USA 4200-05_Preparing_the_Solenoid_Valve_Mounting_Bracket_for_a_Left_to_Right_Side_Installation_USA-1.pdf
Evaporative Humidifiers 3200 & 4200 Brochure Evaporative_Humidifiers_3200__4200_Brochure-1.pdf
GeneralAire Evaporative Humidifier Models 3200 & 4200 Spec Sheet GeneralAire_Evaporative_Humidifier_Models_3200__4200_Spec_Sheet-1.pdf
Owners Manual for GeneralAire Evaporative and Fan-Powered Humidifiers Owners_Manual_for_GeneralAire_Evaporative_and_Fan-Powered_Humidifiers-1.pdf

Manufacturer: GeneralAire
Model Name: 4200A
Part Number: 5951
Type: Humidifier
Typical Application: Forced Air - Ventilation
Home Size: 4,200 SQFT
Gallons Per Day: up to 17
Control: Automatic / Wi-Fi / APP
Vapor Pad Size: 35
Maintenance: Annual Vapor Pad replacement
Weight (pounds): 3.5
Plenum opening (inches): 9 1/8 W x 12 H
Pallet quantity (units): 30
Typical Installation: Forced Air - Ventilation
Power (volts): 24
Warranty (Years): 5 years
Style: Evaporative - Bypass
Voltage: 24V

PARTS

Part Name	Ref #	GFI #	Qty Req'd	Price
4200-14 Drain Pan	7233	4200-14	99982	$9.49
4200-05 Solenoid Valve for 3200 & 4200 Humidifiers	7225	7225	99993	$93.92
4200-02 Humidifier Side Panel	7230	4200-02	100000	$13.51
Cover for 4200	7232	4200-13	100000	$38.82
Chassis for 4200	7229	4200-01	99999	$25.31
900-28 Damper Disk	7573	900-28	9990	$21.84
4200-10 Spout for 3200, 4200, & 4400A	7231	4200-10	99993	$0.73
4200-21 Distribution Tube Assembly	7235	4200-21	99970	$10.37
4200-15 Distribution Trough	7234	4200-15	99952	$2.96
900-11 Damper Knob	7572	900-11	9990	$6.73
GFX5 Automatic Digital Humidistat	7172	GFX5	100000	$301.95

4200-14 Drain Pan

GFI# 4200-14 Ref # 7233

$9.49 Qty Req'd: 99982

4200-05 Solenoid Valve for 3200 & 4200 Humidifiers

GFI# 7225 Ref # 7225

$93.92 Qty Req'd: 99993

4200-02 Humidifier Side Panel

GFI# 4200-02 Ref # 7230

$13.51 Qty Req'd: 100000

Cover for 4200

GFI# 4200-13 Ref # 7232

$38.82 Qty Req'd: 100000

Chassis for 4200

GFI# 4200-01 Ref # 7229

$25.31 Qty Req'd: 99999

900-28 Damper Disk

GFI# 900-28 Ref # 7573

$21.84 Qty Req'd: 9990

4200-10 Spout for 3200, 4200, & 4400A

GFI# 4200-10 Ref # 7231

$0.73 Qty Req'd: 99993

4200-21 Distribution Tube Assembly

GFI# 4200-21 Ref # 7235

$10.37 Qty Req'd: 99970

4200-15 Distribution Trough

GFI# 4200-15 Ref # 7234

$2.96 Qty Req'd: 99952

900-11 Damper Knob

GFI# 900-11 Ref # 7572

$6.73 Qty Req'd: 9990

GFX5 Automatic Digital Humidistat

GFI# GFX5 Ref # 7172

$301.95 Qty Req'd: 100000

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