Replacement is not the first answer for every heavy door
A door that is hard to open may need rollers, track work, or alignment before it needs a full replacement.
Repair-first thinking is useful when the frame and glass are still in reasonable condition.
Replacement makes more sense when the structure is damaged
Broken glass, serious frame damage, water damage, or unsafe panels can change the decision. The first call should sort repair symptoms from replacement red flags.
Ask for the reason, not just the quote
A clear diagnosis should explain whether the problem is rollers, track, alignment, hardware, frame, or glass. That makes the cost conversation easier.