Though relatively expensive compared to conventional storage tank gas water heaters, condensing gas hot water heaters like AO Smith GDHE-50-NG can cut fuel costs by around 30 percent. Part of AO Smith's Vertex line, the GDHE-50-NG is Energy Star Qualified with a thermal efficiency of 96 percent.
- Energy Star qualified
- Fast recovery time
- Meets California ULN standards
- Warranty only six years