GE Profile 50 Gal
#1 in 40–50 GallonFull review
The pick for most homes with a 240 V circuit: the most efficient and quietest heater here, at every size.
GE Appliances PC Richard $2,529.97$2,529.97
The GE Profile 50 Gal is the better heat pump water heater overall, rated 4.4 to 3.5. The GE Profile 50 Gal leads on efficiency, hot water and noise.
Ariston NUOS Side-Connect 50 Gal
#8 in 40–50 GallonFull review
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.
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the GE Profile 50 Gal for efficiency (4.30 UEF vs 3.75 UEF), hot water (77 gallons in the first hour vs 68 gallons in the first hour) and noise (41 dB(A) vs 49.1 dB(A)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 40–50 gallon heat pump water heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | GE Profile 50 Gal | Ariston NUOS Side-Connect 50 Gal |
|---|---|---|
| Overall rating | 4.4/5 | 3.5/5 |
| Efficiency 35% | 93 4.30 UEF | 54 3.75 UEF |
| Hot water 20% | 100 77 gallons in the first hour | 72 68 gallons in the first hour |
| Warranty 20% | 75 10-year tank, 10-year parts, 1-year labor | 70 10-year tank, 10-year parts |
| Cold rooms 15% | 40 heat pump runs down to 35 °F room air | 40 heat pump runs down to 35 °F room air |
| Noise 10% | 94 41 dB(A) | 43 49.1 dB(A) |
Specifications
| GE Profile 50 Gal | Ariston NUOS Side-Connect 50 Gal | |
|---|---|---|
| Ratings (ENERGY STAR) | ||
| Size (nominal) | 50 gal | 50 gal |
| Tank volume (measured) | 50 gal | 45 gal |
| Uniform Energy Factor | 4.30 | 3.75 |
| First-hour rating | 77 gal | 68 gal |
| Draw pattern | High | Medium |
| Yearly energy use | 1,154 kWh | 867 kWh |
| Heat pump cut-off (low) | 35 °F | 35 °F |
| Sound level | 41 dB(A) | 49.1 dB(A) |
| ENERGY STAR ID | 4020929 | 3942616 |
| Installation | ||
| Power | 240 V | 240 V |
| Circuit | 30 A, 208/240 V | 30 A, 208/240 V |
| Backup element | 5,500 W | 4,500 W |
| Operating air range | 35 to 120 °F | 36 to 120 °F |
| Minimum room size | 700 cu ft | 700 cu ft |
| Size | 48.1 in tall, 18.5 in across | 45.8 in tall, 18.2 in across |
| Weight | 179 lb | - |
| Refrigerant | R1234YF | R-134a |
| Features | ||
| Wi-Fi | Built in | Built in |
| App | SmartHQ | Ariston NET |
| Demand response port (CTA-2045) | Yes | Yes |
| Leak detection | Yes | Yes |
| Modes | Heat Pump, Hybrid, High Demand, Electric, Vacation | Comfort, Green, Fast, Electric, Vacation |
| Warranty and models | ||
| Warranty | 10 yr tank, 10 yr parts, 1 yr labor | 10 yr tank, 10 yr parts |
| Also sold as | - | American Standard ASHPWH-50*****, Lennox WHHP050T45MD240S**** |
| Released | 2025-05 | 2024-12 |