You're not cooking on induction with Tefal so I assume that you're using halogen or other electric?
Halogen wrecked a lot of our pans that seem okay with induction and were fine with gas.
(When they get hot, you can't just turn down the heat with halogen as you can with induction or gas so the pans often stay hotter than they probably ought to).
That's the conclusion I came to, anyway.