Thank you for taking the time to leave a review. We appreciate all feedback and a chance to help improve our customer experience. We hate that you're not 100% satisfied and wanted to take a moment to answer your inquiries. The L5 is an outdoor portable tankless water heater, and although it is for outdoor use only, be sure to bring the water heater inside when it is not in use to avoid freeze damage and/or other outside elements (insects, small animals, rainwater, etc) that could get inside the burner which may cause a disturbance in its performance. It is possible also to solve the problem is descaling the water heater, checking the inlet water for the filter screen, and changing gas regulators. There are factors why the L5 is not working and we are here to help, our technical support is ready to help find the solution for the problems of your water heater, please do not hesitate to reach us at support.eccotemp.com. We will be waiting and are always happy to help!