The Midea original behind several heaters here, sold through HVAC contractors. Buy whichever version is easiest to get with the warranty you want.

A non-Midea design with a leak sensor built in and a 10-year tank and parts warranty, sold through plumbing dealers. It is louder than most here.
- 80 galSize
- 4.01UEF
- 87 galFirst hour
- 240 VPower
- 35 °FRuns down to
- 10 yr tankWarranty
No store we check sells it online; the maker lists where to buy or who installs it.
- Built-in leak sensor
- Very efficient: a certified UEF of 4.01, about a quarter of the electricity of a standard electric tank
- The heat pump keeps running in rooms down to 35 °F
- No labor cover in the published warranty
- Louder than most at 49.1 dB(A); best kept away from bedrooms
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | ARIHPWH-80 |
|---|---|
| Ratings (ENERGY STAR) | |
| Size (nominal) | 80 gal |
| Tank volume (measured) | 73 gal |
| Uniform Energy Factor | 4.01 |
| First-hour rating | 87 gal |
| Draw pattern | High |
| Yearly energy use | 1,238 kWh |
| Heat pump cut-off (low) | 35 °F |
| Sound level | 49.1 dB(A) |
| ENERGY STAR ID | 3942615 |
| Installation | |
| Power | 240 V |
| Circuit | 30 A, 208/240 V |
| Backup element | 4,500 W |
| Operating air range | 36 to 120 °F |
| Minimum room size | 700 cu ft |
| Size | 59.1 in tall, 20.2 in across |
| Refrigerant | R-134a |
| Features | |
| Wi-Fi | Built in |
| App | Ariston NET |
| Demand response port (CTA-2045) | Yes |
| Leak detection | Yes |
| Modes | Comfort, Green, Fast, Electric, Vacation |
| Warranty and models | |
| Warranty | 10 yr tank, 10 yr parts |
| Also sold as | American Standard ASHPWH-80*****, Lennox WHHP080T45MD240S**** |
| Released | 2024-12 |
Alternatives in this size
Bradford White’s second-generation hybrid, sold and installed through plumbers, with a 10-year tank and parts warranty and a port for utility demand-response programs.
The most efficient 120 V plug-in here, and the quietest, for replacing a gas tank without new wiring. It can be rewired for 240 V later if the household outgrows it.
GE Appliances Wayfair $3,042Compare
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