40-gallon gas storage water heaters
287 basic models from 23 brands, in the 35-to-45-gallon group.
40-gallon gas storage water heaters
- Basic models
- 28723 brands
- ENERGY STAR certified
- 15of 287
- Advertised figures that differ from the certified figure
- 75of 631Storage volume, UEF, first-hour
- Difference (gal)
- Sold size minus storage volume. A dash means either figure is missing, a range, or not whole gallons.
For 275 of these 287 models, the size sold is larger than the measured tank volume.
Of these 287 models, 184 were tested for medium hot water use. The highest efficiency (UEF) on that test is 0.75, reached by 4 of 184 models. ENERGY STAR certified models number 15 of the 287 here.
You can choose from 287 models in the 40-gallon group, out of 763 in all. Between them, the 287 models here carry 23 brand names.
These tanks are sold as 38 to 40 gallons, within the group's 35 to 45 gallons. The test measured 37 to 40 gallons of storage volume, depending on the model. In the test's first hour, these tanks deliver 51 to 91 gallons, depending on the model.
Across 203 models here, makers and stores give 631 figures for storage volume, UEF, or first-hour rating. Of those 631 figures, 75 differ from the certified figure.
By their certified figures, 117 models on this list may qualify for a rebate. They may qualify under 4 programs in all.
Certified figures by basic model
Sorted by size, smallest first, then by UEF, highest first.
Size is the size the model is sold as. UEF is the uniform energy factor. A UEF compares only between models with the same draw pattern. A range means the models under one basic model differ. A dash means no such figure, or not listed as ENERGY STAR certified.
Of these, 117 basic models may qualify for at least one rebate program. See rebates by state
More gas storage water heaters
Not covered
- Price, warranty, and installation.
- Models whose size as sold is not known. They are on the full list.