ThermostatWires

ThermostatWires provides a free, intuitive tool for simplifying thermostat installation. Key features include: • Compatibility with Nest, ecobee, Honeywell T9, and Amazon thermostats • Support for complex setups like heat pumps and no C-wire configurations • Photo analysis of existing wiring for easy identification • Step-by-step wiring diagrams based on manufacturer guides • No sign-up required, completely free to use This tool eliminates the guesswork from replacing an old thermostat. Users can simply snap a photo of their current wiring or manually select the terminal letters, and the system generates an exact wiring diagram. It accurately identifies compatible new thermostats and indicates whether an adapter is needed for specific setups. The platform covers common and advanced HVAC systems, including single and multi-stage heating/cooling, and dual transformer configurations. It ensures a smooth transition to a new device by providing clear, visual instructions, making it accessible even for those with limited technical experience. The underlying logic is derived directly from manufacturer wiring specifications, ensuring accuracy and reliability. Ideal for homeowners, DIY enthusiasts, and HVAC technicians looking for a quick and dependable way to map existing thermostat wiring to modern smart thermostats. It streamlines the installation process, reduces errors, and helps users upgrade their home climate control systems with confidence.