If your Sunbeam heated blanket is no longer providing the same level of heat as it did when you first bought it, there are a few things you can do to troubleshoot the issue:-Check to see if the blanket is plugged in and turned on.-Check the settings on the control unit to make sure it is set to maximum heat.-Make sure that the blankets is not folded or bunched up. The fabric should be lying flat.-If you have more than one heated blanket, make sure that they are not interfering with each other's heat output.If you have tried all of these things and your Sunbeam heated blanket is still not getting as hot as it used to, it may be time to replace it.