A solid 240 V heater with leak protection included, sold at Lowe’s as the Signature 900 line.
Lowe's $2,798
The pick for most homes with a 240 V circuit: the most efficient and quietest heater here, at every size.
- 80 galSize
- 4.40UEF
- 101 galFirst hour
- 240 VPower
- 35 °FRuns down to
- 10 yr tankWarranty
Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.
- Among the most efficient here: a certified UEF of 4.40, under a quarter of the electricity of a standard electric tank
- Delivers 101 gallons of hot water in the first hour, a lot for its size
- Quiet for a heat pump: 41 dB(A)
- The heat pump keeps running in rooms down to 35 °F
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 | PH80S10BPY |
|---|---|
| Ratings (ENERGY STAR) | |
| Size (nominal) | 80 gal |
| Tank volume (measured) | 80 gal |
| Uniform Energy Factor | 4.40 |
| First-hour rating | 101 gal |
| Draw pattern | High |
| Yearly energy use | 1,127 kWh |
| Heat pump cut-off (low) | 35 °F |
| Sound level | 41 dB(A) |
| ENERGY STAR ID | 4480877 |
| Installation | |
| Power | 240 V |
| Circuit | 30 A, 208/240 V |
| Backup element | 5,500 W |
| Operating air range | 35 to 120 °F |
| Minimum room size | 700 cu ft |
| Size | 57.2 in tall, 21.5 in across |
| Weight | 331 lb |
| Refrigerant | R1234YF |
| Features | |
| Wi-Fi | Built in |
| App | SmartHQ |
| Demand response port (CTA-2045) | Yes |
| Leak detection | Yes |
| Modes | Heat Pump, Hybrid, High Demand, Electric, Vacation |
| Warranty and models | |
| Warranty | 10 yr tank, 10 yr parts, 1 yr labor |
| Released | 2025-07 |
Alternatives in this size
A solid 240 V heater with leak protection included, sold at Lowe’s as the Signature 900 line.
Lowe's $2,999A strong 240 V choice with Wi-Fi, widely stocked at Home Depot. GE Profile beats it on efficiency and noise.
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