Since you live in the south, an ASHP might be less costly than a GSHP.
Cost of the hardware for buying a few mini-splits might be a bit higher,
but the install cost can be pretty low for a DIY guy with an HVAC buddy.
The time it takes to do a mini-split install is likely about 1/20th that of a GSHP.
But, if you are doing 90% of the labor, you might not care how long it takes.
I'm using two Sanyo Mini-Splits at my house (heating and cooling),
and they are very cheap to run.
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My hobby is installing & trying to repair mini-splits
EPA 608 Type 1 Technician Certification ~ 5 lbs or less..
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