Opting for a DIY water heater installation can lead to potential risks and issues. Without proper training and expertise, incorrect installation could result in gas leaks, electrical hazards, or even water damage.
Moreover, DIY installation could void the water heater's warranty, leaving you unprotected against future problems or malfunctions. Going with the professional installation routine will ensure you get the full benefit of the warranty as well as peace of mind you made the best choice.