That heat pump as I understand is the top of the line Carrier for residential.
My house is 4600 sq ft. It's an addition so it's got 2 HVAC systems. There are only 2 of us in the house, and most of the time the secondary system is turned off - it's used only when we have guests, or when we use the home theater, which has its own zone. The secondary HVAC is still using gas. Carrier Infinity with 4 zones, 60000 BTU furnace.
The primary HVAC system is what failed. It was also 2010 Carrier infinity, but bigger 80000 BTU furnace, with 6 zones. We normally only cool/heat 3 of them when we don't have guests. The replacement of furnace with heat pump cost $22,300 parts & labor. We received $11,700 in HEEHRA and SJCE rebates due to being low-income. The HEEHRA funding was very limited, and is now fully exhausted due to the Trump administration. We finally got the incentive check last week. That softened the blow quite a bit. I was hoping the Carrier furnace would last at least 20 years. But the heat exchanger cracked. It would have cost $5000 to fix that one part. California is phasing out gas, so I would likely have been forced to replace with heat pump a few years down the line anyway. We have a lot of excess PV generation, so the add electricity usage is easily absorbed. Eventually, I will replace the secondary HVAC system with heat pump to. My guess is that it will make 20 years+ as it runs much less often than the primary.