Both are heat pump water heaters. The HPTS-66-2 is more efficient (UEF 3.70 vs 3.64). The HPTS-66-2 saves $22/year to operate. All figures from published specs and EIA energy prices.
Performance
| Spec | HPTS-66-2 A. O. Smith · Heat Pump | RE2H65T Bradford White · Heat Pump |
|---|---|---|
| UEF | 3.70Difference: 0.06 | 3.64 |
| Capacity | 67 galDifference: 3 gal | 64 gal |
| First Hour Rating | 82 galDifference: 3 gal | 79 gal |
| kW Input | 4.50 kWidentical | |
The HPTS-66-2 leads on efficiency. But does it fit? Sizing guide
Physical dimensions
| Dimension | HPTS-66-2 | RE2H65T |
|---|---|---|
| Height | 61.50"Difference: 2.25" | 63.75" |
| Width | 26.50" | 25"Difference: 1.50" |
| Depth | 26.50" | 25"Difference: 1.50" |
The RE2H65T is taller. Fit checked. Now the operating cost.
Operating cost
| Cost | HPTS-66-2 | RE2H65T |
|---|---|---|
| Annual Operating Cost | $213/yrDifference: $22/yr | $235/yr |
| 10-Year Operating Cost | $2,130Difference: $220 | $2,350 |
| Annual Energy | 1,233 kWhDifference: 130 kWh | 1,363 kWh |
10-year difference: $220 in favor of the HPTS-66-2, at current US average energy rates. Actual savings depend on local rates and usage patterns.
Costs vary by state. The HPTS-66-2 ranges from $136/yr (ND) to $513/yr (HI). The RE2H65T ranges from $150/yr (ND) to $567/yr (HI).
$22/yr separates them. Install requirements determine the upfront gap. Installation accessories
Installation requirements
| Requirement | HPTS-66-2 | RE2H65T |
|---|---|---|
| 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-66-2 | RE2H65T |
|---|---|---|
| Tank | 10 yridentical | |
Features
| Feature | HPTS-66-2 | RE2H65T |
|---|---|---|
| Wi-Fi / Smart | Yes | — |
| Noise Level | 45 dB | — |
| Refrigerant | R-134aidentical | |
Decision split
Pick this one if...
A. O. Smith HPTS-66-2
- Your ceiling or space is under 63.75"
- Minimizing energy cost matters (saves $22/yr)
- You want smart home / Wi-Fi control
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.
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Related
Sources. ENERGY STAR, manufacturer spec sheets, EIA average energy prices.Methodology