We were reluctant at first with the fact that our cozy spa heater start heading to temperature. We follow the steps needed for a replacement or refund. Networld sports sent us an upgraded brand new cozy spa along with the lid and filters that we had recently purchased for broken cozy spa which did not fit this new one. You’re very pleased with this company‘s honesty and swiftness, especially during a pandemic. There were no more questions asked after we sent all information needed. They replaced everything free of charge and shipped To us from the European Net World Sports Co. Happy customers 😊 Mr & Mrs Watkins