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White rectangular Honeywell wireless remote with RedLINK branding and entry/exit buttons

Honeywell

Honeywell REM1000R1003 RedLINK Wireless Entry/Exit Remote hvac control

SKU CH-3K00-A2NXX MPN REM1000R1003

Wireless entry/exit remote controls compatible Honeywell indoor units including THX9421R5021WW and YTHX9421R5021SG models

  • Genuine Honeywell replacement part ensures exact fit and function
  • RedLINK wireless control lets you adjust HVAC settings from entry or exit points
  • Compatible with THX9421R5021WW, THX9421R5021WG, YTHX9421R5021SG, THX9421R5021BB indoor units
  • Original REM1000R1003 model avoids missing features found in aftermarket versions
  • Direct replacement restores full remote operation without reprogramming

Product purpose and audience

The Honeywell REM1000R1003 is a RedLINK wireless remote designed for entry and exit HVAC control. It serves as a genuine Honeywell original replacement part for specific indoor units. Homeowners and technicians needing an exact factory remote for compatible systems will find this unit matches the original specifications. It is not a universal remote and will not operate other brands or unlisted models.

Compatibility guidance

This remote suits owners of the listed Honeywell indoor units: THX9421R5021WW, THX9421R5021WG, YTHX9421R5021SG and THX9421R5021BB. Buyers who need a controller for a different HVAC brand or model should look elsewhere. Users wanting a universal remote with broad compatibility will not be served by this part. Installers requiring a generic replacement for multiple systems should consider other options.

Compatible indoor unit models

The single specification that decides fit is the exact indoor unit model number. This remote works only with THX9421R5021WW, THX9421R5021WG, YTHX9421R5021SG and THX9421R5021BB. Verify your unit model before purchase; no other models are supported.

How it compares

Measured against everything we stock in Heating & Cooling Controllers, at today’s prices. Recalculated every night.

Price $94.99
Pricier than about 67% of the 1,762 comparable items (median $45.99).

Specifications

Product
Brand nameHoneywell
Model nameREM1000R1003

Questions about this item

What comes with the Honeywell REM1000R1003 remote and do I need to buy anything else?

The box contains the genuine Honeywell REM1000R1003 RedLINK Wireless Entry/Exit Remote. It is a direct replacement part; no additional components are required for operation with compatible indoor units.

How do I know which indoor unit version works with the REM1000R1003?

This remote is only compatible with indoor units THX9421R5021WW, THX9421R5021WG, YTHX9421R5021SG and THX9421R5021BB. Check your unit model number against this list before ordering.

What does the RedLINK wireless feature mean for daily use of the REM1000R1003?

RedLINK provides wireless communication between the remote and the paired indoor unit, allowing entry and exit control without a wired connection to the thermostat.

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