It is important to use the right router when connecting to the Nest Thermostat (3rd Gen) over Wi-Fi. Using an incompatible router will cause connection problems with the thermostat. Make sure you don't get the Nest Thermostat unsupported routers which include the following:
Nest recommends that you use specific Wi-Fi router network configurations to get the best experience with Nest devices.
Reviewed Products
Belkin N Wireless Router (F5D8233-4)
by BelkinCisco-Linksys WRT54G2 Wireless-G Broadband Router
by Linksys, LLCLinksys Wireless-G Broadband Router
by Linksys, LLCD-Link Air Premier-N Dual-Band PoE Access Point, Selectable Dual-Band Draft 802.11n (DAP-2553)
by D-Link CorporationNETGEAR WNDR3400 Dual Band Wireless Router
by NETGEARCisco-Linksys WRT160N Wireless-N Broadband Router
by Linksys, LLCCisco-Linksys WRT320N Dual-Band Wireless-N Gigabit Router
by Linksys, LLCLinksys WRK54G 4-Port Wireless-G Broadband Router
by Linksys, LLCLinksys WRT54G Wireless-G Router
by Linksys, LLCCisco-Linksys WRT110 RangePlus Wireless Router
by Linksys, LLCWNR2000 Wireless-N Router
by NETGEARDI-524 D-Link AirPlus G Wireless Router
by D-Link Corporation