Reddit reviews Honeywell AT72D1683 Transformer, 4" x 4", Multicolored
We found 3 Reddit comments about Honeywell AT72D1683 Transformer, 4" x 4", Multicolored. Here are the top ones, ranked by their Reddit score.
This is a genuine OEM replacement part.Brand name: HoneywellModel number: AT72D1683Country of Origin: United States
Yes.
On the Ecobee
AC wires: RC, Y and G
Heat Wires: RH, W
Now here is where it get's tricky, you need a common wire. You have three possibilities to get it depending on your setup.
I had to run 24v to a Honeywell Lyric thermostat ... used this.
Honeywell AT72D1683 120V/24V Transformer https://www.amazon.com/dp/B000692A58/ref=cm_sw_r_cp_api_ENWMBbQVHKQP5
A furnace also has a transformer see here:
Honeywell AT72D1683 Transformer, 4" x 4", Multicolored https://www.amazon.com/dp/B000692A58/ref=cm_sw_r_cp_apa_i_DOnmDb2C4AT0D
Do wires go back to furnace?