With a gas stovetop, it's fairly easy to ensure your handle does not melt. Make sure the kettle is centered over the flame and that the flames do not extend past the base of the kettle. Also, make sure the kettle is not left on the stovetop heating for longer than necessary.
For electric and induction stovetops, it is less intuitive and we advise using our kettle on the smallest burner on your stovetop. If the diameter of the burner is greater than the diameter of the kettle base, the handle is at risk and we advise keeping the heat as low as possible.
A good way to test this is to grab a hold of the handle while it's heating on your stovetop. If you cannot comfortably hold the handle for 30 seconds, turn down the heat to minimize the risk of your handle melting.
If you need a replacement handle kit, we sell them on our website here. Attached below is a guide to removing and installing a handle on our kettle. It's fairly straight forward, but please shoot us a message at firstname.lastname@example.org if you need assistance!