Bosch Water heater 50-Gallon vs Midea Water Heater 80-Gallon (MAHW-80VN3A)
The Midea Water Heater 80-Gallon (MAHW-80VN3A) is the more efficient unit: UEF 4 versus 3.75 — about 6% less energy for the same hot water. At national average rates that works out to about $145/year for the Bosch Water heater 50-Gallon against $211/year for the Midea Water Heater 80-Gallon (MAHW-80VN3A) — a $66 annual difference. The Midea Water Heater 80-Gallon (MAHW-80VN3A) delivers more hot water in the peak hour (91 gal first-hour rating vs 69 gal).
| Bosch Water heater 50-Gallon | Midea Water Heater 80-Gallon (MAHW-80VN3A) | |
|---|---|---|
| Uniform Energy Factor (UEF) | 3.75 | 4 |
| Fuel | Electric | Electric |
| First-hour rating | 69 gal | 91 gal |
| Rated storage volume | 47 gal | 74 gal |
| Draw pattern | Medium | High |
| Annual electricity use | 855 kWh/yr | 1240 kWh/yr |
| Heat pump type | 240 Volt Integrated HPWH | 240 Volt Integrated HPWH |
| Input voltage | 240 | 240 |
| Max current draw | 24 A | 24 A |
| Recovery efficiency | 430 % | 450 % |
| Smart / connected capable | Yes | Yes |
| Refrigerant (GWP) | R-134a (GWP:1430) | R-134a (GWP:1430) |
| Compressor low-temp cutoff | 37.4 °F | 37.4 °F |
| Height | 47.9 in | 41.7 in |
| Diameter | 18.3 in | 21.8 in |
| ENERGY STAR certified | Yes | Yes |
Frequently asked questions
Which costs less to run, the Bosch Water heater 50-Gallon or the Midea Water Heater 80-Gallon (MAHW-80VN3A)?
The Bosch Water heater 50-Gallon: about $145/year versus $211/year for the Midea Water Heater 80-Gallon (MAHW-80VN3A) at national average rates — a $66 annual difference.
Are the Bosch Water heater 50-Gallon and Midea Water Heater 80-Gallon (MAHW-80VN3A) both ENERGY STAR certified?
Yes — every water heater in this database is drawn from the U.S. EPA ENERGY STAR certified water heater datasets.