A. O. Smith ACTH-199M-(N,P) 1 vs Takagi T-H3-OS-N 1 (T-H3-OS-P 1-1)
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 ACTH-199M-(N,P) 1 against $525/year for the Takagi T-H3-OS-N 1 (T-H3-OS-P 1-1) — a $267 annual difference.
| A. O. Smith ACTH-199M-(N,P) 1 | Takagi T-H3-OS-N 1 (T-H3-OS-P 1-1) | |
|---|---|---|
| Uniform Energy Factor (UEF) | 0.95 | 0.95 |
| Fuel | Natural Gas, Propane | Propane |
| Max flow rate | 5.8 GPM | 5.8 GPM |
| Draw pattern | High | High |
| Annual gas use (natural gas) | 178 therms/yr | 178 therms/yr |
| Gas input rate | 199 kBTU/h | 199 kBTU/h |
| Max current draw | 5 A | 5 A |
| Vent type | Power Direct Vent, Power Vent | Power Vent |
| Recovery efficiency | 97 % | — |
| Smart / connected capable | No | No |
| Minimum activation flow | 1 GPM | 1 GPM |
| Annual propane use | 194.53 gal/yr | 194.53 gal/yr |
| Vent size | 3 / 2 | 3 |
| Height | — | 22 in |
| Width | 17 in | 18 in |
| Depth | 16 in | 11 in |
| ENERGY STAR certified | Yes | Yes |
Frequently asked questions
Which costs less to run, the A. O. Smith ACTH-199M-(N,P) 1 or the Takagi T-H3-OS-N 1 (T-H3-OS-P 1-1)?
The A. O. Smith ACTH-199M-(N,P) 1: about $258/year versus $525/year for the Takagi T-H3-OS-N 1 (T-H3-OS-P 1-1) at national average rates — a $267 annual difference.
Are the A. O. Smith ACTH-199M-(N,P) 1 and Takagi T-H3-OS-N 1 (T-H3-OS-P 1-1) both ENERGY STAR certified?
Yes — every water heater in this database is drawn from the U.S. EPA ENERGY STAR certified water heater datasets.