Custom HVAC in LBT 1.3.0

Dear Ladybug community,
Hey guys, I recently tried to simulate a rural house with eclectic floor heating and residential AC. Still, unfortunately, I couldn’t finish it since I didn’t know how to custom HVAC in the 1.3.0 release. I learned @chris might do it in the next stable release, but I still want to know if there are any alternative ways to achieve this goal.
Thank you!