https://www.googlenestcommunity.com/t5/Nest-Thermostats/unfortunate-mistake-nest-thermostat-without-pre-existing-thermostat/m-p/476179#M102824 <P>No, unfortunately. It can't be used as a standalone device and needs to be connected to a HVAC system.</P> Sat, 02 Sep 2023 14:20:39 GMT David_K 2023-09-02T14:20:39Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/unfortunate-mistake-nest-thermostat-without-pre-existing-thermostat/m-p/475380#M102675 <P>I bought the nest thermostat with intention of monitoring the temperature, unfortunately i didnt research the prerequisites and impulsively bought it. Its stuck with me - and shop is not allowing me to return it.&nbsp; Any chance i can still use&nbsp; without existing thermostat, heater + cooling - wiring; i just wanted to monitor the temperature and trigger some automation on turning on/off smart devices...</P> Thu, 31 Aug 2023 13:14:57 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/unfortunate-mistake-nest-thermostat-without-pre-existing-thermostat/m-p/475380#M102675 johnyeah 2023-08-31T13:14:57Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/unfortunate-mistake-nest-thermostat-without-pre-existing-thermostat/m-p/476179#M102824 <P>No, unfortunately. It can't be used as a standalone device and needs to be connected to a HVAC system.</P> Sat, 02 Sep 2023 14:20:39 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/unfortunate-mistake-nest-thermostat-without-pre-existing-thermostat/m-p/476179#M102824 David_K 2023-09-02T14:20:39Z