Honeywell thermostat function/comparison charts.....

[Rfsmith48]

Folks,

We just had a new Lennox furnace installed. It has a 2 speed fan.
The fan necessitated a thermostat upgrade for the new fan system.
Previous Tstat: RTH8580WF1007: WIFI thermostat that I installed about 6 years ago.
New Tstat: T6 Pro Thermostat: Programmable.

I would like to replace the T6 Tstat with the equivalent Honeywell Model with WIFI.

Can someone point me in the right direction?

Thanks,

Rog

 

[Fitter30]

Model of furnace? Most older gas and electric furnaces are two speed. Hi speed for ac and medium for heat with two more speeds for if the the system needs fine tuning ( 4 speeds). A lot of the newer furnaces have a electronically commutated motors which are variable speeds are set on a board in the furnace. Do you have the install manual? They might list a thermostat for that furnace.

 

[Sponsor]

 

[Rfsmith48]

The furnace is a Lennox SL280UHV.
Install instructions state: "...is compatible with any Lennox communicating thermostat. Or, Non-communicating thermostats - ComfortSense or other conventional thermostats."
Not a lot of help (For me).
I would like to use a Honeywell WIFI tstat.
Thanks,
Rog

 

[Fitter30]

Assume you have a single stage cooling and heating ( gas)? Is the system using a i comfort electronic thermostat ? Here's the manual i looked at. Page 34. With single stage cooling and heat. Any wifi single stage heat and cooling stat will work. Furnace connection tb 1 board

https://www.google.com/url?q=https://www.questargas.com/ForEmployees/qgcOperationsTraining/Furnaces/Lennox_SL280UHV_IOM.pdf&sa=U&ved=2ahUKEwiY_P6ZoaD_AhV7rokEHbgbAFkQFnoECAsQAg&usg=AOvVaw2m2ffdzqoLTFeUtUuOidcS