A.O. Smith Voltex MAX 50 Gal
#11 in 40–50 GallonFull review
A solid 240 V heater with leak protection included, sold at Lowe’s as the Signature 900 line.
Lowe's $2,229$2,229
3.4/5
A strong 240 V choice with Wi-Fi, widely stocked at Home Depot. GE Profile beats it on efficiency and noise.
- 40 galSize
- 3.83UEF
- 60 galFirst hour
- 240 VPower
- 37 °FRuns down to
- 10 yr tankWarranty
Check price at Home Depot$2,098
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Built-in Wi-Fi: set schedules and vacation mode from the EcoNet app
- 10-year tank and parts warranty plus 1 year of labor
Cons
- Switches to the backup element when the room drops below 37 °F, so it saves little in a freezing garage
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 | XE40T10H45U1 |
|---|---|
| Ratings (ENERGY STAR) | |
| Size (nominal) | 40 gal |
| Tank volume (measured) | 36 gal |
| Uniform Energy Factor | 3.83 |
| First-hour rating | 60 gal |
| Draw pattern | Medium |
| Yearly energy use | 859 kWh |
| Heat pump cut-off (low) | 37 °F |
| Sound level | 45 dB(A) |
| ENERGY STAR ID | 3554180 |
| Installation | |
| Power | 240 V |
| Circuit | 30 A, 208/240 V |
| Backup element | 4,500 W |
| Operating air range | 37 to 145 °F |
| Minimum room size | 700 cu ft |
| Size | 62.3 in tall, 20.3 in across |
| Weight | 166 lb |
| Refrigerant | R-134a |
| Features | |
| Wi-Fi | Built in |
| App | EcoNet |
| Demand response port (CTA-2045) | Yes |
| Leak detection | No |
| Modes | Energy Saver, Heat Pump, High Demand, Electric, Vacation |
| Warranty and models | |
| Warranty | 10 yr tank, 10 yr parts, 1 yr labor |
| Also sold as | Friedrich PROH40 T2 FD400-30, Friedrich PROH40 T2 FD400-SO, Rheem PROPH40 T2 RH375-30, Rheem PROPH40 T2 RH375-SO, Rheem PROPH40 T2 RH400-30, Rheem PROPH40 T2 RH400-SO, Richmond 10E40-HP530, Richmond 10E40-HP5S30, Richmond 10E40-HP5U30, Richmond 10E40-HP5US30, Ruud PROUH40 T2 RU375-30, Ruud PROUH40 T2 RU375-SO, Ruud PROUH40 T2 RU400-30, Ruud PROUH40 T2 RU400-SO |
| Released | 2024-06 |
Alternatives in this size
Navien NWP500 50 Gal
#12 in 40–50 GallonFull review
Navien’s stainless-tank hybrid, sold through plumbers, with a 10-year warranty that includes a year of labor. Its heat pump stops below 41 °F room air, so it suits a basement more than a cold garage.
Senville SENWH-HP 50 Gal
#14 in 40–50 GallonFull review
The lowest checked price for the Midea-built design, for a buyer comfortable with a smaller brand’s warranty terms.
Amazon $1,599.99 Senville $1,599.99$1,599.99
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