Not necessarily because it will outlast all others, but simply because it is the easiest and least expensive to replace.
Many people learn to adjust and replace the tubes themselves, they are that easy.
Best of all, spiral tube conversion leaves the original wood framing exposed, and no plastic parts visible. If your windows are pre-1800 and never had a balance system or just had spring clips, spiral tubes are a good alternative, altering the appearance very little. We would prefer to return your windows to the original rope and pulley system, but this is only possible if they were that way in the first place. Inc. All rights reserved.