A. O. Smith ATHR-180M 1 vs Midea JSG48-29PCH-LP
Both water heaters carry the same efficiency rating: UEF 0.95. At national average rates that works out to about $258/year for the A. O. Smith ATHR-180M 1 against $516/year for the Midea JSG48-29PCH-LP — a $258 annual difference. The A. O. Smith ATHR-180M 1 sustains the higher flow (5.3 GPM vs 5.2 GPM under the DOE test).
| A. O. Smith ATHR-180M 1 | Midea JSG48-29PCH-LP | |
|---|---|---|
| Uniform Energy Factor (UEF) | 0.95 | 0.95 |
| Fuel | Natural Gas, Propane | Propane |
| Max flow rate | 5.3 GPM | 5.2 GPM |
| Draw pattern | High | High |
| Annual gas use (natural gas) | 178 therms/yr | 175 therms/yr |
| Gas input rate | 180 kBTU/h | 180 kBTU/h |
| Max current draw | 5 A | 1.3 A |
| Vent type | Power Vent, Power Direct Vent | Power Direct Vent |
| Recovery efficiency | 97 % | 0.99 % |
| Smart / connected capable | No | No |
| Minimum activation flow | 1 GPM | 0.6 GPM |
| Annual propane use | 194.53 gal/yr | 191.25 gal/yr |
| Vent size | 3 / 2 | 2 / 3 |
| Height | — | 26.8 in |
| Width | 17 in | 17.3 in |
| Depth | 16 in | 11 in |
| ENERGY STAR certified | Yes | Yes |
Frequently asked questions
Which costs less to run, the A. O. Smith ATHR-180M 1 or the Midea JSG48-29PCH-LP?
The A. O. Smith ATHR-180M 1: about $258/year versus $516/year for the Midea JSG48-29PCH-LP at national average rates — a $258 annual difference.
Are the A. O. Smith ATHR-180M 1 and Midea JSG48-29PCH-LP both ENERGY STAR certified?
Yes — every water heater in this database is drawn from the U.S. EPA ENERGY STAR certified water heater datasets.