![Does anyone know I can install a smart thermostat without additional wiring? How can I tell if the blue wire is the C wire? It's an air handler for a/c only. : Does anyone know I can install a smart thermostat without additional wiring? How can I tell if the blue wire is the C wire? It's an air handler for a/c only. :](https://preview.redd.it/x4o2gcbyfym91.jpg?width=640&crop=smart&auto=webp&s=31429b7c9e94f8a7ccdf5cba3a8bf9bc94e7629e)
Does anyone know I can install a smart thermostat without additional wiring? How can I tell if the blue wire is the C wire? It's an air handler for a/c only. :
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Advice on how to wire a 4 wire RGWY wifi thermostat to an old hvac with no c wire? - Home Improvement Stack Exchange
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915 Generation Programmable WiFi Smart Thermostat No C-Wire Required By C- Wire Adapter with Zone Remote Sensor 24VAC | Jumia Nigeria
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Emerson, Sensi 7-day Programmable Wi-Fi Smart Thermostat, No C-Wire Required – St. John's Institute (Hua Ming)
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Honeywell home ventilation system with no c wire for thermostat. How can I substitute the g for the c without blowing a fuse? - Home Improvement Stack Exchange
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electrical - Where should I connect the C wire in a Janitrol furnace? - Home Improvement Stack Exchange
![Novoce Programmable WiFi Smart Thermostat New White, No C-Wire Required By C -Wire Adapter, with Zone Remote Sensor, 24VAC : Amazon.co.uk: DIY & Tools Novoce Programmable WiFi Smart Thermostat New White, No C-Wire Required By C -Wire Adapter, with Zone Remote Sensor, 24VAC : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/41POBNL4PhL._AC_UF894,1000_QL80_.jpg)