Quick verdict
What your current unit costs to operate
Based on U.S. average energy rates (EIA). UEF 4.05.
Replacement options
Bradford White RE2HP65-1NCTT
Heat PumpUEF 4.20 / ~$204/yr / 10-yr tank warranty
Highest UEF in class at 4.20 vs 4.05, compact 44.6-inch height vs 64.19 inches
- 19.6" shorter than your current unit
- 2.2" narrower than your current unit
Navien NWP500S065AUMB
Heat PumpUEF 4.03 / ~$215/yr / 10-yr tank warranty
UEF 4.03 vs 4.05, 45 dBA noise, Wi-Fi included, 61-gal capacity vs 59 gal
- Needs condensate drain (your current unit does not)
A. O. Smith HPTS-66-2
Heat PumpUEF 3.70 / ~$213/yr / 10-yr tank warranty
UEF 3.70, Wi-Fi and 45 dBA noise, 67-gal capacity vs 59 gal
- Needs condensate drain (your current unit does not)
- 2.7" shorter than your current unit
- 2.2" wider than your current unit
Rinnai REHP65BM
Heat PumpUEF 3.90 / ~$214/yr / 10-yr tank warranty
UEF 3.90, Wi-Fi included, 60-gal capacity vs 59 gal
Replacement comparison
| Spec | Your unit | RE2HP65-1NCTT | NWP500S065AUMB | HPTS-66-2 | REHP65BM |
|---|---|---|---|---|---|
| UEF | 4.05 | 4.20 | 4.03 | 3.70 | 3.90 |
| Annual Cost | $204/yr | $204/yr | $215/yr | $213/yr | $214/yr |
| Annual Savings | $0/yr | $-11/yr | $-9/yr | $-10/yr | |
| Height | 64.2" | 44.6" | 63" | 61.5" | 65.5" |
| Width | 24.2" | 22.0" | 25" | 26.5" | 25.6" |
| Warranty | 10 yr | 10 yr | 10 yr | 10 yr | 10 yr |
● Best value in each row. Your unit column shows the model being replaced.
Common install considerations for heat pump units
What is required depends on your existing installation, local code, and installer preference.
The federal tax credit of up to $2,000 under IRA Section 25C expired December 31, 2025. State and utility rebates may still apply.