Gas water heaters are generally considered more cost-efficient than electric models due to the lower cost of natural gas compared to electricity. Gas heaters heat water faster and can recover more quickly after heavy hot water usage, making them suitable for homes with high-demand requirements. However, the exact cost savings depend on local utility rates and the efficiency of the specific unit. It's recommended to consult with Warner Super Service, Inc for guidance on choosing the most cost-effective water heater for your needs in Fort Washington.