Reddit 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.

Tools & Home Improvement
HVAC
Building Supplies
HVAC Controls
Honeywell AT72D1683 Transformer, 4
This is a genuine OEM replacement part.Brand name: HoneywellModel number: AT72D1683Country of Origin: United States
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3 Reddit comments about Honeywell AT72D1683 Transformer, 4" x 4", Multicolored:

u/jryanishere · 2 pointsr/homeautomation

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.

  1. You have an extra wire coming from your A/C's air handler to your thermostat and a C terminal to connect it to on the A/C end.

  2. You DO NOT have an extra wire to use as a C wire but you DO have a C terminal you could use on the A/C end. You will be able to use the adapter that comes with the Ecobee to get the C wire on the thermostat end.

  3. You need a 24vAC transformer. Either a wall adapter or a box mount one And you would wirenut the hot side to RH and insert the common (neutral) side to C.
u/sgorneau · 1 pointr/HomeKit

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

u/ihaveapihole · 1 pointr/Ring

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?