https://www.googlenestcommunity.com/t5/Nest-Thermostats/Replacing-Hunter-5-wire-with-W-B/m-p/593812#M116323 <P>Hello RPL1,<BR /><BR />It looks like you're on the right track with your assumption. In a conventional heating system, the wire labeled 'W/B' on your thermostat, which corresponds to the W/B heating terminal, should indeed connect to the 'W' terminal on the Nest Thermostat. The 'W' terminal is commonly used for heating control in Nest Thermostats for conventional systems.<BR /><BR />However, it's always a good idea to double-check the HVAC system control board to ensure compatibility and get precise instructions. Additionally, if you're unsure or encounter any difficulties during the installation process, share with us a photo of your old thermostat's wiring setup and the make and model of your system. Also, from what country are you posting?<BR /><BR />I'll look forward to your response.<BR /><BR />Best regards,<BR />Mark</P> Wed, 07 Feb 2024 14:44:24 GMT Markjosephp 2024-02-07T14:44:24Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Replacing-Hunter-5-wire-with-W-B/m-p/578208#M114956 <P>I want to replace a Hunter 44360 with a nest. One of the wires goes to a connection labeled 'W/B' on the Hunter 44360. The Hunter thermostat manual says if the wire is marked W/H/B then it was to go to the W/B heating terminal. This is a conventional system (not a heat pump). My assumption is that the wire labeled 'W/B' will go to the 'W' terminal on the nest. Is this correct?&nbsp;</P> Sat, 20 Jan 2024 14:32:59 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Replacing-Hunter-5-wire-with-W-B/m-p/578208#M114956 RPL1 2024-01-20T14:32:59Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Replacing-Hunter-5-wire-with-W-B/m-p/593812#M116323 <P>Hello RPL1,<BR /><BR />It looks like you're on the right track with your assumption. In a conventional heating system, the wire labeled 'W/B' on your thermostat, which corresponds to the W/B heating terminal, should indeed connect to the 'W' terminal on the Nest Thermostat. The 'W' terminal is commonly used for heating control in Nest Thermostats for conventional systems.<BR /><BR />However, it's always a good idea to double-check the HVAC system control board to ensure compatibility and get precise instructions. Additionally, if you're unsure or encounter any difficulties during the installation process, share with us a photo of your old thermostat's wiring setup and the make and model of your system. Also, from what country are you posting?<BR /><BR />I'll look forward to your response.<BR /><BR />Best regards,<BR />Mark</P> Wed, 07 Feb 2024 14:44:24 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Replacing-Hunter-5-wire-with-W-B/m-p/593812#M116323 Markjosephp 2024-02-07T14:44:24Z