For the best Gemaire experience, please update your web browser.

Honeywell YERM5220R8321/U - RedLINK™ Equipment Remote Module With VisionPro® Thermostat

Item: YERM5220R8321/U
MFR: YERM5220R8321/U
This product is currently not available for purchase.
What’s the price?
Sign in or register for pricing.

Your Order Templates
Save products for later, or create order templates to quickly re-buy items for routine jobs.

Add To Order Template

Inventory At Nearby Branches



Honeywell YERM5220R8321/U - RedLINK™ Equipment Remote Module ERM5220R1018 With VisionPro® Thermostat TH8321R1001

The Honeywell ERM is like a new cordless tool in your toolbox. Pull it out when it's too costly or time consuming to run wires from a condensing unit or boiler to control devices. There are fewer holes to drill and wires to run. Just faster, easier installation that gives you more profit per job. Make the Honeywell ERM your go to choice for fast, easy equipment installation.

  • Wireless RedLINK™ communication between condensing unit/compressor or boiler and thermostat
  • Eliminates the need to run additional wires to your equipment, for example, during a heat pump upgrade
  • Suitable for outdoor use
  • Temperature sensor terminals for outdoor temp sensors or indoor freeze protection
  • LEDs for easy installation checkout
  • May reduce damage to homes since wiring/drilling is eliminated


NameHoneywell YERM5220R8321/U - RedLINK™ Equipment Remote Module With VisionPro® Thermostat
Gemaire Item NumberYERM5220R8321/U
Manufacturer Product NumberYERM5220R8321/U
SKU - PIM Number1464251576847
ERP Number360415
Unit of MeasureEA
Weight6.0 Pounds (Lb)
Length4.6 Inches (In)
Width7.1 Inches (In)
Height7.1 Inches (In)
Country of OriginMEX
Voltage24 VAC
Electrical ConnectionScrew Terminals
Electrical Rating24 VAC, 50/60 Hz
Power MethodBattery and Hard wired
Batteries IncludedNo
750mV CompatibleNo
Auto ChangeoverYes
Built In Wi-FiNo
Change/Check RemindersYes
Daylight Savings Time ReadyYes
Digital-Non ProgrammableNo
Display OptionsBacklit, Digital
Displays Outdoor TemperatureYes
Heat Pump CompatibleYes
Indoor Remote SensorNo
Low Battery IndicatorYes
Programmable FanYes
Stages Cool2
Stages Heat2
Temperature Settings per Day4
Vacation ModeYes
Battery BackupYes
Ambient Temperature RangeERM - Compressor at -40°F to 155°F (-40°C to 68°C) and Boiler at 30°F to 130°F (-1°C to 54°C); Thermostat at 32°F to 120°F (0°C to 48.9°C); EIM at -40°F to 165°F (-40°C to 74°C)
ApplicationMultistage Conventional and Heat Pump Systems
ColorGray, White
Dual Transformer CompatibleNo
Fan SwitchingNo
MountingAttach the ERM to the wall near the compressor or boiler. The location should be at least 3 feet above ground and oriented with the two wire exits facing downward. Mount the thermostat on wallplate. EIM mounts vertically.
Operating Temperature RangeERM - Compressor at -40°F to 155°F (-40°C to 68°C) and Boiler at 30°F to 130°F (-1°C to 54°C); Thermostat at 32°F to 120°F (0°C to 48.9°C)
Removable InterfaceNo
System SwitchingYes
Temperature RangeHeat at 40°F to 90°F (4.5°C to 32°C); Cool at 50°F to 99°F (10°C to 37°C)
Terminal DesignationsERM-J, R, C, Y, Y2, O/B, D, L, S1, S1
Warranty OfferedYes
Cycle/Hertz60 Hz
GEM - Case Quantity


Parts List

Parts list is loading, wait for a moment....