AprilAire 4788 Humidifier Maintenance Kit with Water Panel Model No. 45 Humidifier Replacement Filter for AprilAire Whole-House Humidifier Models: 400, 400A, 400M

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 4788 Humidifier Maintenance Kit contains all components for step-by-step maintenance of your AprilAire Whole Home Humidifier, models 400, 400A, 400M.

• BUY WITH CONFIDENCE: This genuine Aprilaire Humidifier Maintenance Kit was designed and manufactured in the USA by Aprilaire – the inventor of the Whole Home Evaporative Humidifier and the leader in indoor air quality solutions, to optimize the performance of your Aprilaire Whole Home Humidifier and make it like new
• COMPLETE MAINTENANCE KIT: No need to find the parts yourself! This kit contains all components required to maintain peak performance of your AprilAire Whole Home Humidifier, models 400, 400A, 400M. Reference Owner's Manual included with all AprilAire Humidifier Maintenance Kits before performing humidifier maintenance.
• MAINTENANCE KIT INCLUDES: Water Panel (45), Scale Control Insert (4403), Water Distribution Tray (4407), Feed Tube with Compression Sleeve and Nut (4335), Yellow Orifice (4231), In-line Strainer (4004), Float Assemblies (4406), Float Cover (4405), Owner's Manual
• PERFECT APRILAIRE FIT: Water Panel actual dimensions - 12.875" H x 9.875" L x 1.75" W - for optimal performance replace water panel twice during the season
• HUMIDITY FOR HEALTH Aprilaire Humidifiers can help you maintain optimal humidity in your home of 40% – 60% which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mites. In addition, you’ll feel more comfortable while also preserving items in your home susceptible to damage from changing humidity or dry conditions