You Are Here: Home > Products > Thermostats & Controls > Thermostats > 1 Heat/1 Cool > White-Rodgers 1F98EZ-1621 Wireless Thermostat System
White-Rodgers 1F98EZ-1621 Wireless Thermostat System

click to zoom
(10 more images)

In Stock
Standard: 2-7 Business Days: Free!

* Prices reflect shipping fees for a quantity of (1)

White-Rodgers 1F98EZ-1621 Wireless Programmable Thermostat System

This innovative system takes advantage of the latest wireless technology and allows for the location of a thermostat where wires are difficult or impossible to run.  The system consists of:

1).  6" Comfort Interface (Thermostat) which runs on batteries
2).  Equipment Control Module, which is powered by 24V system transformer and wires to HVAC equipment
3).  Return Air Sensor (RAS) - The RAS monitors temperature of the return air and is needed at all times for system operation


  • Universal - compatible with single and multi-stage, heat pump and heat pump with dual fuel applications
  • Premium Humidity Control
  • Easy-to-Read 6" Display on Comfort Interface
  • Ideal where pulling wires is difficult and additional temperature sensing is desired.
  • Color-coded LEDs on Equipment Control validates system wiring.
  • Comfort Interface and Equipment Control are paired at the factory - nothing to configure.
  • Wireless Sensor (F145RF-1600) is configurable for indoor or outdoor use. The thermostat displays the average of the local sensor and any indoor remote
    sensors unless a device has been deactivated.  The local sensor can be disabled so that only remote sensor values are used for control.
  • Easily Reduces Hot and Cold Spots in the Home
  • Comfort Interface and up to 3 wireless temperature sensors can be located in optimum control locations.
  • Maximizes Comfort with Premium Humidity Control
  • Set and control humidification and dehumidification right at the Comfort Interface.
  • Optimizes Efficiency on Heat Pump Systems with Dual Fuel Control
  • Choice of dual fuel control with wireless temperature sensor or by Dual Fuel Logic program in Comfort Interface.
  • Choice of 7 day or Ø day/non-programmable (installer selectable)
  • Choice of 4 or 2 program periods per dayPermanent program retention during power loss
  • Indefinite setpoint Hold or  temporary temperature override
  • Auto heat/cool changeover option - automatically switches between heating and cooling programs
  • Heating and cooling, heating only or cooling only configuration
  • Setpoint temperature limits
  • Furnace filter change reminder
  • Humidifier pad change reminder
  • Maintains room temperature to within +/- 1° F
  • Room temperature display can be recalibrated up to +/- 5° F


Dimensions: 6.5"W x 4.3"H x 1.2"D - comfort interface / 6.5"W x 6.4"H x 1.4"D - equipment control module
Setpoint Temperature Range: 45° to 99° F (7° to 32° C)
Rated Differential: Heat 0.6° F; Cool 1.2° F
Operating Ambient Temperature: 1F98EZ-1621
14° to 131° F (-10° to 55° C) - comfort interface
-13° to 158° F (-25° to 70° C) - equipment control
Operating Humidity Range: 5-90% non-condensing maximum
Applications - Standard Systems, Single Stage gas, oil, electric, Single Stage heat pump, Multi-Stage gas, oil, electric, Multi-Stage heat pump
TERMINALS: R, Rc, Rh, C, W/E, Y, Y2, G, O/B, L, HM, HM2, DHM, DHM2