Nest Thermostat Variable Speed Fan

That s the thing to remember.

Nest thermostat variable speed fan. However i am running into issues with the variable speed fan on our high efficiency furnace. Variable speed fans high voltage forced air systems with fans and proprietary systems with fans aren t compatible with either the nest learning thermostat or the nest thermostat e. Nest can t control different fan speeds so if you have a multi speed fan it will always be on the lowest setting. I have my two stage controlled by the nest.

But with variable speed correct me if i m wrong but the fan is constantly modulating faster or slower. The nest thermostat e is only compatible with single speed system fans. I have the same setup as shown in cb242 s first set of pictures for his downstairs configuration using the tcont803as32daa thermostat. With the comfortlink 1050 or 850 thermostat you get pretty much all of the features your existing smart thermostat has.

An hvac tech may be able to set it higher but then that would be the fan speed all the time. These stages will dictate the fan speed. Variable speed fans high voltage forced air systems with fans and proprietary systems with fans aren t compatible with either the nest learning thermostat or the nest thermostat e. When you give up your nest or ecobee in exchange for the thermostat that comes with your new variable speed hvac system you re still going to have a smart thermostat.

When the fan setting on the thermostat is set to on the fan runs on a low speed and when the heat cuts in the fan increases speed like it should. The stages can be controlled by the nest thermostat or by the lennox board. So far i think it s a good product. The google nest thermostat e is only compatible with single speed system fans.

It s the first thermostat i ve ever used that i actually like. I m looking to buy a new furnace mine is old and past its life but really like using the nest thermostat. The variable speed fan part is controlled by the board so for my single stage cool the program i have chosen dictates the fan ramp and compressor calls. I would like to be able to control as much of the new furnace s features with the.

It looks like nest recently added support for multi speed fan control for some furnaces. I installed the nest thermostat this past thursday. With a smart thermostat it will turn the furnace on or off based on temperature.