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From the manufacturer
AprilAire 4750 Humidifier Maintenance Kit
AprilAire introduced the first evaporative humidifier for forced air furnace systems back in 1954. Since that time, AprilAire continues to lead the industry in whole home humidification systems.
Our evaporative humidifiers work by piping water into the distribution tray located at the top of the humidifier. The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets. It flows by gravity over the Water Panel evaporator. Dry, hot air from the forced air furnace moves through the moisture-laden Water Panel evaporator. Natural evaporation takes place, meaning the water is turned to vapor, and the humidified air is circulated throughout your home.
This AprilAire 4750 Humidifier Maintenance Kit contains all components for step-by-step maintenance of your AprilAire Whole Home Humidifier, models 700, 700A, 700M, 760, 760A, 768.
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| AprilAire 4750 Humidifier Maintenance Kit with 35 Water Panel | AprilAire 4788 Humidifier Maintenance Kit with 45 Water Panel | AprilAire 4792 Humidifier Maintenance Kit with 10 Water Panel | AprilAire 4793 Humidifier Maintenance Kit with 10 Water Panel | AprilAire 4837 Humidifier Maintenance Kit with 35 Water Panel | AprilAire 4839 Humidifier Maintenance Kit with 35 Water Panel | |
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| Price | — | $115.99 | $65.00 | $78.99 | $89.99 | $67.00 |
| Compatible AprilAire Whole-House Humidifiers | 700, 700A, 700M, 700MZ, 700Z | 400, 400A, 400K, 400M, 400MK, 400MZ, 400Z | 500, 500A, 500K, 500M, 500MK, 500MZ, 500Z | 550, 550A, 558 | 560, 560A, 568 | 600, 600A, 600K, 600M, 600MK, 600MZ, 600Z |
| What's In The Box | 35 Water Panel, 4004 Inline Strainer, 4231 Orifice, 4235 Feed Tube with Nozzle, 4236 Scale Control Insert, 4246 Distribution Tray, Owner's Manual | 45 Water Panel, 4004 Inline Strainer, 4231 Orifice, 4403 Scale Control Insert, 4405 Float Cover, (2) 4406 Float, 4407 Distribution Tray, 4335 Feed Tube, Owner's Manual | 10 Water Panel, 4004 Inline Strainer, 4231 Orifice, 4223 Drain Spud, 4331 Distribution Tray, 4335 Feed Tube, 4640 Scale Control Insert, Owner's Manual | 10 Water Panel, 4004 Inline Strainer, 4184 Nozzle, 4223 Drain Spud, 4231 Orifice, Scale Control Insert, Distribution Tray, Feed Tube, Owner's Manual | 35 Water Panel, 4004 Inline Strainer, 4184 Nozzle, 4223 Drain Spud, 4231 Orifice, 4236 Scale Control Insert, Distribution Tray, Feed Tube, Owner's Manual | 35 Water Panel, 4004 Inline Strainer, 4231 Orifice, 4223 Drain Spud, 4330 Scale Control Insert, 4331 Distribution Tray, 4335 Feed Tube, Owner's Manual |
| Water Panel Size | 1.75" L x 10.0" W x 13.0" H inches, 3.8 lbs. | 1.75" L x 9.88" W x 12.88" H inches, 3.2 lbs. | 1.75" L x 9.5" W x 9.75" H inches, 3.2 lbs. | 1.75" L x 9.5" W x 9.75" H inches, 3.2 lbs. | 1.75" L x 10.0" W x 13.0" H inches, 3.6 lbs. | 1.75" L x 10.0" W x 13.0" H inches, 3.5 lbs. |
AprilAire is Healthy Air
AprilAire is on a mission to make homes healthy. We believe everyone deserves Healthy Air and envision a future with Healthy Air in every home.
We value healthy living, customer inspired innovation, simplicity of design, straight talk and delivering real results as promised, and most importantly making a positive difference in the lives of our customers, families, and communities.
Headquartered in Madison, Wisconsin since 1954, AprilAire has been creating and delivering Healthy Air solutions to manage air purity, humidity, fresh air supply, radon mitigation, and temperature for all types of homes, in all environments.
We have an unparalleled reputation as the brand of choice among tens of thousands of professional contractors and make a Healthy Air difference in the lives of the millions of families who rely on our products every day.
Reviews with images
Good kit for Aprilaire Model 768
Maintenance Kit parts worked on my 20-year-old Model 768 which was not working this winter, no water flow. I found that the inline strainer was blocked. After removing the strainer and reassembled water was flowing when the solenoid valve was on. Ordered maintenance kit which included the inline strainer PN #4004. The part that I had the most difficulty replacing was the feed tube. The nozzle end would not go into the hole that anchor the nozzle to frame. I had to enlarge the hole in the frame using a 9/64 drill bit. The nozzle was able to rotate on the tubing, so I did not encounter any other problems with the tubing. The tubing orifice at the solenoid end was yellow. The enclosed card stated this was more efficient. I removed the frame from the return duct making it easier to remove the old feed tube and installing the new tube. Installation of kit took about 2 hours.
