Thermostat Fan Setting For Variable Speed Furnace

Installing a nest learning thermostat to control a multi speed fan can be complicated and incorrect settings can damage your system your nest thermostat or both.

Thermostat fan setting for variable speed furnace.

We strongly recommend professional installation for all multi speed fan systems with more than one fan wire. The trane comfortlink 1050 or 850 thermostat that comes with your new variable speed furnace has the ability to read temperature and humidity and turn the system on when relative humidity. Maybe i m not fully aware of how variable speed works. The fan s auto setting works with your heating cooling system so your fan is running the least amount of time needed at the slowest speed.

Consult a trained hvac professional before making any changes to your system fan speed as it could have unintended consequences. Your furnace filter will also last longer since air isn t being pushed through it as much. Variable speed furnaces have a payback period of approximately four to five years this means your new variable speed furnace pays for itself through generated energy savings in just a handful of years. A variable speed air.

It can also use multistages i think up to 3 with nest to turn it to high med low i think. This setting is only available for the small number of system fans with multi speed fans. Variable speed fans high voltage forced air systems with fans. With a smart thermostat it will turn the furnace on or off based on temperature.

It s going to be expensive unless you have a variable speed motor much more than it would be on the auto option. This option is recommended if you have a variable fan speed furnace. In this case there will usually be a brief delay before the fan engages after a heating cycle is initiated. Many modern hvac systems now come with variable speed blower motors that provide similar benefits to running your thermostat fan on on the whole heating or cooling system adapts its running speed to.

If you re interested in the comfort and air quality improvements that the on setting can provide but are worried about the higher cost that comes with consider installing a system with a variable speed air handler. Cons on option the biggest con to having your fan continually running is the cost involved. At pv we mostly install trane equipment. Some thermostats now offer a circulate setting that will turn your fan on for a set period of time to help in circulating the air.

Variable speed air handlers provide a compromise between the on and auto settings. When your fan is on auto moisture is able to drip from the cold cooling coils and drain outside. Variable speed furnaces consume less energy than conventional furnaces therefore your heating and cooling costs are cut considerably. Set your system s fan speed.

By choosing this option your ecobee will relinquish control of the fan to the furnace during heating cycles. If you ve already met the temperature you ve set on the thermostat they won t turn the system on to dehumidify.