I will be pricing radiant heat in the next shop. You can’t beat it. It not only heats the space, but the slab is warm if you need to lay or sit on it to do anything. I thought about putting the piping in the concrete of my current garage and buying the equipment later, but decided against it at the time.Do any of you have pads heated with pex laid in? I'm wondering how effective and energy efficient it is in a place like MI where the ground freezes in the winter.