geothermal is very uncommon.
Weidner hvac has done several jobs for me and done better and cheaper then several other companies.
Not sure if I can post phone number or any of that on here for the company, I have no association with them just use them very often for my hvac needs, they're very investor friendly priced right.
Not a problem with your specific situation, but I can't stand when a company (any service) goes in and tells my tenants it all needs to be replaced.
Water heater thermo coupler.. oh you need a new water heater..
Simple issue with heater.. oh whole thing needs to be replaced.
It's terrible IMO as it puts in the tenants mind that the system needs to be replaced and that's not always the case, many times these guys are commissioned and just want to replace and not even diagnose. Weidner has been excellent in that aspect.
I've personally never used Palo Duro hvac but have heard several good things from them as well, and they are commenly used by investors it seems.
Good luck. Terrible time of year to be doing this.. if it can be held off for a few months you'll prob get a much better price. These companies are all swamped this time of year.