Quick verdict
What your current unit costs to operate
Based on U.S. average energy rates (EIA). UEF 3.75.
Replacement options
Rheem PROPH50 T2 RH400-30
Heat PumpUEF 3.88 / ~$146/yr / 10-yr tank warranty
UEF 3.88 vs 3.75, Wi-Fi included, shorter at 61.75 vs 66.4 inches
- 4.7" shorter than your current unit
Bradford White RE2HP50-1NCTT
Heat PumpUEF 3.89 / ~$144/yr / 10-yr tank warranty
UEF 3.89 vs 3.75, compact 46.1-inch height vs 66.4 inches
- 20.3" shorter than your current unit
- 3.7" narrower than your current unit
Navien NWP500S050AUMB
Heat PumpUEF 3.85 / ~$145/yr / 10-yr tank warranty
UEF 3.85 vs 3.75, 45 dBA noise rated, shorter at 63 vs 66.4 inches
- 3.4" shorter than your current unit
A. O. Smith HPTS-50-2
Heat PumpUEF 3.80 / ~$143/yr / 10-yr tank warranty
UEF 3.80 vs 3.75, 45 dBA noise rated, shorter at 63 vs 66.4 inches
- 3.4" shorter than your current unit
Replacement comparison
| Spec | Your unit | PROPH50 T2 RH400-30 | RE2HP50-1NCTT | NWP500S050AUMB | HPTS-50-2 |
|---|---|---|---|---|---|
| UEF | 3.75 | 3.88 | 3.89 | 3.85 | 3.80 |
| Annual Cost | $146/yr | $146/yr | $144/yr | $145/yr | $143/yr |
| Annual Savings | $0/yr | $2/yr | $1/yr | $3/yr | |
| Height | 66.4" | 61.8" | 46.1" | 63" | 63" |
| Width | 21.7" | 22.2" | 18.0" | 21.7" | 22" |
| 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.