I put one in 10 years ago. 4 ton unit, meaning 4 loops. I took out a heat pump. Electric bills are half what they used to be. I can count the times on one hand where it had to go to aux heat. It’s 0 degrees right now and no aux heat. Runs great. Would do again.
Back then I got s huge tax credit also. I don’t think these are still available today.
I also get my hot water from this system. Basically unplugged my electric feed to the water heater and just use the tank. Very nice set up.