Aprilaire hydrlh Hydrocore Model L Hard Water Maintenance Kit for 720A and 720M Humidifiers

Product Description

The Aprilaire hydrlh HydroCore Model L Hard Water Maintenance Kit is a complete service solution for whole-house humidifier upkeep. This kit is designed specifically for the Aprilaire 720A and 720M whole-house humidifiers and gives HVAC technicians and homeowners everything needed to restore proper humidifier function in a single package. Hard water deposits are one of the most common causes of humidifier performance loss. Mineral scale builds up inside the water panel and orifice over time, reducing water flow and humidity output. This kit addresses both failure points at once. The kit includes one L HydroCore water panel cartridge and one orifice assembly rated for hard water applications. The orifice part number is 70000037. Together, these two components cover the full annual maintenance cycle for hard water conditions. Annual replacement of both parts helps prevent excessive scale buildup, restores proper water supply to the water panel, and keeps the humidifier running at rated capacity season after season. The L HydroCore water panel cartridge uses a snap-in and snap-out design that makes removal and installation fast. No special tools are needed. The orifice threads out for easy access. A trained technician or a careful homeowner can complete the service call quickly. The HydroCore frame is made from recycled plastic and is recyclable at end of life, which supports sustainability goals without sacrificing performance. Aprilaire has manufactured indoor air quality products in the United States since 1954. This kit is made in the USA and is backed by that long track record of reliability. For any HVAC service professional maintaining Aprilaire 720 series humidifiers in hard water regions, the hydrlh kit is the correct replacement assembly to stock and recommend. Keeping a unit on the service van helps reduce callbacks and keeps customers comfortable all winter long.

• Includes one L HydroCore water panel cartridge and one 70000037 orifice assembly for a complete hard water service in a single kit
• Snap-in water panel and thread-out orifice design allow fast, tool-free maintenance on Aprilaire 720A and 720M humidifiers
• HydroCore frame is made with recycled plastic and is fully recyclable, supporting eco-friendly HVAC maintenance practices

Product Highlights

The Aprilaire hydrlh gives HVAC technicians one kit to handle full annual maintenance on hard water Aprilaire 720 series humidifiers. It combines the L HydroCore water panel and a hard-water orifice assembly to prevent scale buildup and maintain peak humidity output year after year.

Product Information

Standard Information

• Brand: APRILAIRE
• Manufacturer Part Number: hydrlh

Technical Specifications

• Type: Hard Water Maintenance Kit
• Compatible Humidifiers: Aprilaire 720A and 720M Whole-House Humidifiers
• Included Components: 1 L HydroCore Water Panel Cartridge, 1 Orifice Assembly 70000037 for Hard Water Applications
• Height: 16 inches
• Width: 3.57 inches
• Depth: 10.75 inches
• Material: Plastic
• Country of Origin: USA