Both are heat pump water heaters. The HPTS-50-2 is more efficient (UEF 3.80 vs 3.44). The HPTS-50-2 saves $20/year to operate. All figures from published specs and EIA energy prices.
Performance
| Spec | HPTS-50-2 A. O. Smith · Heat Pump | RE2H50S Bradford White · Heat Pump |
|---|---|---|
| UEF | 3.80Difference: 0.36 | 3.44 |
| Capacity | 46 galDifference: 1 gal | 45 gal |
| First Hour Rating | 65 galidentical | |
| kW Input | 4.50 kWidentical | |
The HPTS-50-2 leads on efficiency. But does it fit? Sizing guide
Physical dimensions
| Dimension | HPTS-50-2 | RE2H50S |
|---|---|---|
| Height | 63" | 59.19"Difference: 3.81" |
| Width | 22" | 21.75"Difference: 0.25" |
| Depth | 22" | 21.75"Difference: 0.25" |
The HPTS-50-2 is taller. Fit checked. Now the operating cost.
Operating cost
| Cost | HPTS-50-2 | RE2H50S |
|---|---|---|
| Annual Operating Cost | $143/yrDifference: $20/yr | $163/yr |
| 10-Year Operating Cost | $1,430Difference: $200 | $1,630 |
| Annual Energy | 831 kWhDifference: 113 kWh | 944 kWh |
10-year difference: $200 in favor of the HPTS-50-2, at current US average energy rates. Actual savings depend on local rates and usage patterns.
Costs vary by state. The HPTS-50-2 ranges from $92/yr (ND) to $346/yr (HI). The RE2H50S ranges from $104/yr (ND) to $393/yr (HI).
$20/yr separates them. Install requirements determine the upfront gap. Installation accessories
Installation requirements
| Requirement | HPTS-50-2 | RE2H50S |
|---|---|---|
| Voltage | 240Videntical | |
| Amperage | 22A | 19ADifference: 3A |
| Breaker | 30Aidentical | |
| Condensate Drain | Yes | — |
Same electrical requirements. Swapping between these units should not require electrical changes.
Warranty
| Coverage | HPTS-50-2 | RE2H50S |
|---|---|---|
| Tank | 10 yridentical | |
Features
| Feature | HPTS-50-2 | RE2H50S |
|---|---|---|
| Wi-Fi / Smart | Yes | — |
| Noise Level | 45 dB | — |
| Refrigerant | R-134aidentical | |
Decision split
Pick this one if...
A. O. Smith HPTS-50-2
- Minimizing energy cost matters (saves $20/yr)
- You want smart home / Wi-Fi control
- Peak efficiency is the priority (UEF 3.80)
Pick this one if...
Bradford White RE2H50S
- Your ceiling or space is under 63"
Neither if...
- Your home only has 120V service and you cannot upgrade the panel
- Your install space is under 700 sq ft of open air
Common accessories for this type of installation.
Common install considerations for heat pump units
What is required depends on your existing installation, local code, and installer preference.
As an Amazon Associate I earn from qualifying purchases. RatingPlate may earn a commission when you use qualifying Amazon links. Links to Amazon are marked "(paid link)". We never display prices because Amazon prohibits showing prices outside their platform.
Related
Sources. ENERGY STAR, manufacturer spec sheets, EIA average energy prices.Methodology