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Doorbell and Thermostat appear to be on shared Transformer. What is best approach to replace? - Home Improvement Stack Exchange
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Wasserstein 24-Volt Transformer and C-Wire Adapter for Google Nest Thermostat, Learning Thermostat, Thermostat E and Wyze Thermostat 24VAdapter25ftWhtUSA - The Home Depot
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HQRP Transformer Primary 120V-240V, Secondary 24V Compatible with HVAC Furnace, Nest Ecobee Sensi Honeywell Thermostat, Nest Doorbell 120v-240v-to-24v Replacement 40VA Power Supply C(UR) US Certified - Walmart.com
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BWR04 Transformer Winding Thermometer Transformer Thermostat Controller Dalian Shiyou Instruments - AliExpress
![Newbie: Any way to add a c wire to existing transformer or wires? Do I need a new transformer with a “c” terminal? (Trying to connect a Wi-Fi thermostat to control boiler) : Newbie: Any way to add a c wire to existing transformer or wires? Do I need a new transformer with a “c” terminal? (Trying to connect a Wi-Fi thermostat to control boiler) :](https://preview.redd.it/rx53me8zs8z71.jpg?width=640&crop=smart&auto=webp&s=ac89cd0dbc4fb66351ef8e71110a553c069509a4)
Newbie: Any way to add a c wire to existing transformer or wires? Do I need a new transformer with a “c” terminal? (Trying to connect a Wi-Fi thermostat to control boiler) :
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Bensn 24 Volt Transformer, C Wire Adapter Thermostat with All Versions of Doorbell and Thermostat for Nest, Ecobee, Sensi and Honeywell, 315 Inch Cable 24V Transformer - Walmart.com
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Maxdot 24V 40VA Thermostat and Doorbell Transformer, Power Supply Compatible with Nest, Ecobee, Sensi and Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell (1 Pcs) - Amazon.com
![wiring - How to add Thermostat C Wire to Furnace TH/TR and Transformer - Home Improvement Stack Exchange wiring - How to add Thermostat C Wire to Furnace TH/TR and Transformer - Home Improvement Stack Exchange](https://i.stack.imgur.com/GNpOf.jpg)
wiring - How to add Thermostat C Wire to Furnace TH/TR and Transformer - Home Improvement Stack Exchange
![24 Volt Transformer, C Wire Adapter Thermostat, Compatible with Smart Thermostats and Doorbells Power Supply (23ft Cable) - Amazon.com 24 Volt Transformer, C Wire Adapter Thermostat, Compatible with Smart Thermostats and Doorbells Power Supply (23ft Cable) - Amazon.com](https://m.media-amazon.com/images/I/71g-TO6zv7L._AC_UF1000,1000_QL80_.jpg)
24 Volt Transformer, C Wire Adapter Thermostat, Compatible with Smart Thermostats and Doorbells Power Supply (23ft Cable) - Amazon.com
![Xwartre UL Certified Thermostat C Wire 24V Transformer, White Adapter Compatible with Honeywell, Nest, Emerson, Ecobee, Wyze Thermostat and Most Doorbells (26FT Power Cable) - Amazon.com Xwartre UL Certified Thermostat C Wire 24V Transformer, White Adapter Compatible with Honeywell, Nest, Emerson, Ecobee, Wyze Thermostat and Most Doorbells (26FT Power Cable) - Amazon.com](https://m.media-amazon.com/images/I/51EPruGRJwL._AC_UF1000,1000_QL80_.jpg)
Xwartre UL Certified Thermostat C Wire 24V Transformer, White Adapter Compatible with Honeywell, Nest, Emerson, Ecobee, Wyze Thermostat and Most Doorbells (26FT Power Cable) - Amazon.com
![Honeywell Home 24 Volt Transformer Selectable-flexible Programmable Thermostat in the Programmable Thermostats department at Lowes.com Honeywell Home 24 Volt Transformer Selectable-flexible Programmable Thermostat in the Programmable Thermostats department at Lowes.com](https://mobileimages.lowes.com/productimages/fafa1dda-e185-4abe-9e54-9968fd7d6448/64668906.jpg?size=pdhism)
Honeywell Home 24 Volt Transformer Selectable-flexible Programmable Thermostat in the Programmable Thermostats department at Lowes.com
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AC 24V 40VA Doorbell Transformer Thermostat Power Supply,24V Hardwired Door Chime Power Adapter - Walmart.com
![Bensn 24 Volt Transformer, C Wire Adapter Thermostat with All Versions of Doorbell and Thermostat for Nest, Ecobee, Sensi and Honeywell, 315 Inch Cable 24V Transformer - Walmart.com Bensn 24 Volt Transformer, C Wire Adapter Thermostat with All Versions of Doorbell and Thermostat for Nest, Ecobee, Sensi and Honeywell, 315 Inch Cable 24V Transformer - Walmart.com](https://i5.walmartimages.com/asr/8905e227-9b5f-4590-a5ed-bf6f2082324f.1b372af223b4d0cbfb67863fb4d4e1a8.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)