You're looking to spend at least $30k if you need a vertical system, probably a lot more. And from what I understand, they ground loops inevitably don't reach

You're looking to spend at least $30k if you need a vertical system, probably a lot more. And from what I understand, they ground loops inevitably don't reach their expected lifespan, so you'll be drilling new holes sooner than later. If you live in a very cold climate, I suppose with tax credits it could make some sense. For most people, AC + Natural gas is the cheapest way to go.