Honeywell RTH7400D Owner's Guide

The Honeywell RTH7400D Thermostat is a versatile programmable device designed to optimize energy efficiency and provide user-friendly climate control. It features a clear, backlit digital display that provides easy readability of temperature settings and system status, even in low-light conditions. This thermostat supports a wide range of heating and cooling systems, including single-stage and multi-stage heating and cooling, heat pumps with auxiliary heat, and millivolt systems. It offers 7-day programming flexibility, allowing users to customize schedules with up to four distinct periods per day, enhancing comfort and energy savings. The Honeywell RTH7400D comes equipped with an intuitive interface that simplifies programming and operation, reducing the likelihood of user error. It also includes a temporary and permanent hold feature, which enables users to override scheduled settings without altering the programmed schedule permanently. The thermostat is compatible with most 24-volt systems but is not suitable for electric baseboard heat systems. Installation is made easier with the included UWP mounting system, which streamlines the process and ensures secure attachment. The device is designed to maintain consistent temperature control with an accuracy of +/-1°F, ensuring optimal comfort. With its focus on energy efficiency and user convenience, the Honeywell RTH7400D Thermostat is a reliable choice for homeowners looking to enhance their home's climate control system.