Our print holds 3 to 5 years outdoors before it starts to fade. On HVAC work that range is wide, and where a sticker lands in it is partly up to you.

Sunlight is what fades print

Ultraviolet light fades print; rain, cold, and washing don't. The laminate resists water and scratches well, and it slows the sun's effect without stopping it.

So the same sticker lasts very differently depending on where it goes:

A rooftop unit in full southern sun: the short end of the range.
The shaded side of the same unit: noticeably longer.
Inside a mechanical room: considerably longer than outdoors.

Where you have a choice of side, the shaded one gives you extra years for nothing.

Color decides how it ages

Reds and bright colors fade first, which is why old signs often look blue. A sticker that has to stay readable for years should be dark text on a light background, not the reverse. That also reads better in a dim mechanical room.

Damp, dust, and cold aren't the problem

A crawlspace or a mechanical room is gentler on a sticker than a roof. Laminated vinyl handles damp and dust, and once a sticker has bonded, the cold doesn't harm it. Applying to a cold surface is a different matter; see why HVAC stickers fall off.

The one thing that will take a sticker off is a pressure washer aimed at an edge. Place stickers where the spray won't catch a corner.

Matte or gloss

Neither meaningfully outlasts the other. Matte cuts glare and takes a ballpoint pen as well as a permanent marker, which is what you want on anything a technician writes on. Gloss lifts color and contrast. Choose for the job, not for durability.

How long stickers last outdoors has the general version, and the templates are in our HVAC stickers.