In the trades in the US we would exclusively use the term heat pump to describe a system where the “indoor” or “outdoor” coil can change from condenser or evapo

In the trades in the US we would exclusively use the term heat pump to describe a system where the “indoor” or “outdoor” coil can change from condenser or evaporator depending setting. Us HVAC guys would generally call a conventional system a conventional DX system (for direct exchange rather than chiller) or a split system (like a mini-split, minus the mini).