Yes and extension springs can be DIY’s with a little help, torsion springs are best left to someone with experience because if one of those springs lets loose they can remove limbs and getting a arm reattached is not a DIY project.
One of my sheds had a torsion spring OHD which I wanted to remove and replace with a sliding barn door, closely examining the spring I decided to just unbolt the door from the frame then cut the frame allowing the door to fall outward to the ground.
It sort of worked, the door fell outward as expected hit the ground and then the right side of the torsion spring slipped out of the mount, that caused the spring to unwind tossing a few hundred pound door a good 10 feet across the yard.
Had someone been on the outside helping they might have been hit and badly injured, those springs have a lot of stored energy when the door is down.
On the other hand I recently replaced a torsion spring cable on a cargo trailer rear door and it wasn’t too hard of a job, but the cables on a cargo trailer door are under way less tension that a OHD torsion spring and I was able to use the remaining cable to lock the drum I needed to wind the new cable around held in place.
Now I can lower and raise the door with almost zero effort.
