Unless your house is ridiculously large I think you were given a sky high quote because the contractor didn't want to the job. I paid less that half of that for

Unless your house is ridiculously large I think you were given a sky high quote because the contractor didn't want to the job. I paid less that half of that for a full ground source geo heat system a few years ago. Heat pumps are typically more complicated to install and size properly. You can throw an oversized gas furnace in any house for fat profits and no real HVAC design. Contractors that aren't wanting for business can give you ludacris estimates for jobs they're not interested in. If you take it, great, they make a lot of money, if not they can schedule someone else or push you into an easier job for them. I ran into this with a concrete job I needed done recently. The contractors were all booked a year or more out, and were quoting $20k+ for a normal concrete driveway. I found a paver installer who seemed much less busy, was able to do a full paver job for way under the slab pourers!