The new burner i'm building is gonna be made from a portable on demand propane water heater, plugged into a digital co2 controller, that heats an insulated tank of water up every time it runs to produce the co2 (not just wasting propane, and more like a water cooled burner, that slow releases the built up heat over time!).
That tank of water will be plumbed into radiant floor heating coils (pex tubing grid) with temp controlled circulation pump, to help warm the grow in the winter, especially during lights off