No, beyond commonsense.
If they are installed correctly, that is, in line with our installation guidelines, and are not abused, then normal wear and tear should see them serve you for many years.
We recommend you inspect them periodically for damage, loose wires etc. But that’s all.
TankBlankets have been in use in the USA since 1991 and Motorhomes are still in use today with their original TankBlankets in operation!