Hello Xaelbaure89,
Thanks for reaching out. It's great that you're considering a Nest Thermostat! However, it's crucial to ensure compatibility with your existing wiring. A Honeywell thermostat with 8 wires and a common wire (+C) suggests that you have a relatively complex HVAC system.
To determine compatibility, you can check the Nest Thermostat compatibility article. It provides a compatibility checker that can guide you through the process, asking about your current setup to see if it aligns with thermostat requirements.
In general, Nest Thermostats are compatible with a wide range of HVAC systems, but it's always best to double-check to avoid any complications during installation. Additionally, if you're unsure, you could share with us a photo of your current thermostat's wiring setup. This would help us determine its wiring configuration.
Feel free to reach out if you have any more questions.
Regards,
Mark
