You don’t need a special unit to decarb oil you intend to distill. The way I do it is in the flask(s).
Method one: Put raw THCa and stuff into boiling flask. Flask goes into mantle. I stack two kugelrohr style bulbs verticle onto that. Onto the top kugelrohr I insert a ¼ barb fitting glass adapter with a glass frit. Then I pull vacuum deep as it will go. Then heating mantle on at about 100C on the mantle. Oil slowly pukes then drains back into flask helped a bit by warming the bulbs with a torch. It gets done pretty fast and temp is fairly low. One bulb to clean though the second bulb will have some spatters.
Method two: Same as idea one but instead in my sublimator. I put a coffee mug warmer into the cold finger water which boils the water then run the sublimator at low temp and deep vacuum. It takes more patience and the vent valve needs bumping at first to prevent an expanded foam effect from filling the sublimator… but once you get the idea down it also works fast.
Method three I have not used yet and involves tactical thermo nuclear weapons use. This method speaks more to my diagnosis of grandios delusional tangential thinking moreso than a practical solution but it would of course be the very fastest way to completely decarb your compound…
What are we going to do tonight Brain?