ZzIceDzZ OP t1_jc2ey7i wrote on March 13, 2023 at 3:32 PM

Thank you all for all the comments, sugestions and tips. Here is the thermostats I was gonna replace which has only 4 matched letters. Should I just connect 4 wires and tape the rests or consider a better matching thermostat? pic

Jonsnoosnooze t1_jc3756k wrote on March 13, 2023 at 6:35 PM

Since you figured out the wiring situation, I'm going to throw this in unsolicitedly: it's probably a good thing to replace the thermostat with a smart thermostat at the same time. Energy companies typically team up with Home Depot and Lowes to offer instant rebates on smart thermostats, anywhere from 50-150$ off sale value. Check on your energy company's website for a coupon. I picked up a couple ecobee smart thermostats for 15 bucks each when I rewired my furnace.