A 120 V plug-in with a backup element and leak shut-off included. Its certified efficiency is among the lowest here, so it suits replacing a gas tank more than replacing an electric one.
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
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.
| Model number | HPTV-50 |
|---|---|
| Ratings (ENERGY STAR) | |
| Size (nominal) | 50 gal |
| Tank volume (measured) | 46 gal |
| Uniform Energy Factor | 3.00 |
| First-hour rating | 52 gal |
| Draw pattern | Medium |
| Yearly energy use | 1,550 kWh |
| Heat pump cut-off (low) | 37 °F |
| Sound level | 45 dB(A) |
| ENERGY STAR ID | 2871545 |
| Installation | |
| Power | Plug-in 120 V |
| Circuit | Shared 15 A circuit |
| Backup element | 900 W |
| Operating air range | 37 to 120 °F |
| Minimum room size | 450 cu ft |
| Size | 63 in tall, 15 in across |
| Weight | 196 lb |
| Refrigerant | R-513A |
| Features | |
| Wi-Fi | Built in |
| App | A. O. Smith (iCOMM) |
| Demand response port (CTA-2045) | Yes |
| Leak detection | Yes |
| Modes | Heat Pump, Electric, Vacation |
| Warranty and models | |
| Warranty | 10 yr tank, 10 yr parts, 1 yr labor |
| Also sold as | American HPV10250H009DV, Lochinvar HPV050KD, Reliance 10-50-DHPTV, State HPVX-50-DHPT |
| Released | 2023-07 |
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 PC Richard $2,529.97A plug-in for replacing a gas tank in a mild-climate garage or basement without new wiring. Buy a size up, since it has no element to fall back on.
Home Depot $2,119A plug-in for replacing a gas tank in a mild-climate garage or basement without new wiring. Buy a size up, since it has no element to fall back on.
Home Depot $1,699Compare the A.O. Smith Voltex 120V 50 Gal with any other heat pump water heater →
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