Research Products 720m Fan-powered Evaporative Humidifier

Product Description

The RESEARCH PRODUCTS 720m is a fan-powered evaporative humidifier rated at 21 gallons per day, designed for whole-house humidity control in homes up to 6,250 square feet. It uses a HydroCore evaporator pad and an integrated fan to distribute moisture independently of the heating system blower, making it effective in homes with heat pumps or electric heat. The unit ships with a 4655 Manual Control, a 4010 24-volt 10 VA transformer, and a 4001 saddle valve, so most installations require no additional components. The housing is constructed from polycarbonate and plastic. Licensed HVAC technicians or experienced plumbers handle the install, working at the air handler or duct system.

The 720m is suited to residential forced-air systems in larger homes. Its fan-powered design allows independent operation from the air handler, which is a practical advantage in homes where the furnace runs infrequently or where a heat pump is the primary heating source. The manual control included in the box gives the occupant direct dial adjustment of the humidistat. The unit is compatible with the AprilAire Healthy Air System, allowing integration with other AprilAire indoor air quality equipment when applicable.

Key Features

• 21 gallons per day evaporative output for whole-house coverage up to 6,250 square feet
• Fan-powered design operates independently of the air handler blower
• Includes 4655 Manual Control, 4010 24-volt transformer, 4001 saddle valve, HydroCore evaporator pad, and installation template
• Water-saving operation reduces unnecessary drain cycles
• Compatible with the AprilAire Healthy Air System for integrated indoor air quality management
• Polycarbonate and plastic housing for durability in mechanical room environments

Compatibility

Compatible with the AprilAire Healthy Air System. Designed as an OEM-style whole-house humidifier for residential forced-air systems, including those with heat pumps or low-temperature air handlers.

Installation Notes

Installation is typically performed by a licensed HVAC technician or plumber. Shut off power to the air handler and close the supply water valve before beginning work. The included saddle valve connects to a cold-water supply line, and the 24-volt transformer wires into the furnace control board or a dedicated 24-volt circuit. Follow local mechanical codes and the included installation template for duct cutout and mounting placement.

Technical Specifications

• Evaporative Output: 21 gallons per day
• Coverage Area: Up to 6,250 square feet
• Control Type: Manual (4655 Manual Control included)
• Transformer: 24 volts, 10 VA
• Height: 18 inches
• Width: 16.5 inches
• Depth: 11 inches
• Material: Polycarbonate, Plastic

Standard Information

• Brand: RESEARCH PRODUCTS
• Manufacturer Part Number: 720m