Thanks for the practical counterpoint. They are definitely pricier and the installation is more complex, but they do pay for themselves over time and should add

Thanks for the practical counterpoint. They are definitely pricier and the installation is more complex, but they do pay for themselves over time and should add to the value of the home. I'm surprised about the earth movement ruining coils. The installations I've seen pictures of show coils with pretty large radii (maybe 18"), I'd think the earth would have to move a lot to do that, and if it's doing that I'd worry about the foundation. Were these small coils? Is the surface really close to the water table?