Honeywell Home THP9045A1023/U WireSaver C-Wire Adapter for Wi-Fi Thermostats or RedLINK 8000 Series

Save time and avoid costly rewiring with the Honeywell Home THP9045A1023/U WireSaver C‑Wire Adapter — a practical thermostat wiring module designed for retrofit and new installs. This Honeywell Home thermostat accessory functions as a 24V common wire splitter, enabling Wi‑Fi thermostats and RedLINK 8000 series units to draw power where a dedicated C-wire is missing. Compatible with industry-standard HVAC systems, the gray, compact module (packaged quantity: 1) installs quickly and reduces callbacks for contractors.

Beyond convenience, the WireSaver supports reliable connectivity for smart controls, improving long-term monitoring and integration with building security, surveillance, and automation systems. Manufactured by Resideo (MX), the adapter helps maintain stable power to your thermostat, minimizing intermittent reboots and keeping networked thermostats online for uninterrupted data and remote management. For facility managers and service techs, it’s an affordable way to modernize climate control and enhance HVAC networking without invasive upgrades.

Upgrade existing thermostats to Wi‑Fi or RedLINK 8000 series devices faster—add the THP9045A WireSaver to your next job to simplify installs and improve system monitoring. Order now to streamline your thermostat upgrades.

• Simplifies retrofits by eliminating the need to run a new 24V C-wire, reducing labor and install time
• Compatible with Wi‑Fi thermostats and RedLINK 8000 series, enabling modern smart HVAC control
• Compact thermostat wiring module (THP9045A1023/U) that installs quickly and cleanly in existing systems
• Improves system reliability for building monitoring and HVAC networking without rewiring
• Ideal for technicians and facility managers who want fast, low-cost upgrades and minimal disruption