It’s also thousands, 800sq ft is probably a couple grand in materials alone not even accounting for labor to remove the carpet and labor to install (area dependent).

Plus, carpet is so soft. IMO, a good compromise is tile in places like bathrooms, kitchens, hallways and entryways. Living room could go either way and carpet for bedrooms.

But that could still add up on the sq ft so it wouldn’t necessarily solve the cost problem and ultimately is only a cosmetic upgrade Vs spending thousands to say upgrade your HVAC and insulation or maybe new windows which could actually pay for itself in time from savings on having to run HVAC less