How long to CHE's typically last?

[JobForARetic]

Have you been using it full-on, or controlling it with a dimmer or thermostat? I've heard that controlling them tends to shorten their workable life by quite a bit, but I can't
say from my own experience, since I don't use them.

I've been using them with an on/off thermostat.

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The one I've used has lasted 2 years so far.

What brand is it?