Honeywell 84205 Thermostat Wire 18 Awg 6 Conductor 250 Ft

Product Description

The HONEYWELL 84205 is an 18 AWG, 6-conductor thermostat wire cable supplied on a 250-foot spool. Constructed with bare copper conductors and a PVC jacket, this CL2-rated cable is built for low-voltage thermostat and HVAC control wiring applications. The bare copper construction ensures reliable conductivity and resistance to signal degradation over long runs. Rated for temperatures from -20 to 60 degrees F, it holds up in both indoor mechanical rooms and unconditioned spaces. HVAC technicians and electricians reach for this cable when running new thermostat circuits or replacing aging wiring in residential and light commercial systems.

This cable is suited for connecting thermostats, zone controllers, air handlers, heat pumps, and other low-voltage HVAC control devices. The 6-conductor configuration supports multi-stage heating and cooling systems, heat pump wiring with auxiliary and emergency heat circuits, and systems requiring a common (C) wire. The 250-foot spool provides enough length to complete most residential jobs or multiple shorter runs without splicing. It is a standard choice for new construction rough-in, system retrofits, and thermostat upgrades.

Key Features

• 18 AWG bare copper conductors for dependable low-voltage signal transmission
• 6 conductors support multi-stage and heat pump wiring configurations
• CL2 rating meets NEC requirements for in-wall and general wiring use
• PVC insulation and jacket rated from -20 to 60 degrees F
• 250-foot spool reduces mid-run splices on longer residential pulls
• UL and ETL listed for code-compliant installations

Compatibility

Designed as a standard 18 AWG CL2 thermostat cable for use with residential and light commercial low-voltage HVAC control systems requiring a 6-conductor wire run.

Installation Notes

Installation should be performed by a licensed HVAC technician or electrician in accordance with NEC Article 725 requirements for Class 2 low-voltage wiring. De-energize the thermostat and air handler circuits at the breaker before making any wire connections. Avoid routing thermostat cable in the same conduit as line-voltage wiring to prevent interference. Secure cable runs with appropriate low-voltage staples or clips and do not exceed minimum bend radius when routing through walls or mechanical spaces.

Technical Specifications

• Conductor Material: Bare Copper
• Conductor Size: 18 AWG
• Number of Conductors: 6
• Length: 250 feet
• Package Type: Spool
• Insulation Material: PVC
• Jacket Material: PVC
• Temperature Rating: -20 to 60 degrees F
• Cable Type: CL2
• Weight: 40 pounds
• Approvals: UL, ETL

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: 84205