The PROPH50 T2 RH400-30 is more efficient (UEF 3.88 vs 0.93). The PROPH50 T2 RH400-30 saves $104/year to operate. All figures from published specs and EIA energy prices.
Performance
| Spec | PROPH50 T2 RH400-30 Rheem · Heat Pump | RTGH-95DVLN-3 Rheem · Condensing Tankless |
|---|---|---|
| UEF | 3.88Difference: 2.95 | 0.93 |
| Capacity | 45 gal | — |
| First Hour Rating | 67 gal | — |
| Max Flow Rate | — | 9.50 GPM |
| BTU Input | — | 199,900 |
| kW Input | 4.50 kW | — |
The PROPH50 T2 RH400-30 leads on efficiency. But does it fit? Sizing guide
Physical dimensions
| Dimension | PROPH50 T2 RH400-30 | RTGH-95DVLN-3 |
|---|---|---|
| Height | 61.75" | 23"Difference: 38.75" |
| Width | 22.25" | 18"Difference: 4.25" |
| Depth | 22.50" | 9"Difference: 13.50" |
| Weight | 185 lbs | 53 lbsDifference: 132 lbs |
The PROPH50 T2 RH400-30 is taller. Fit checked. Now the operating cost.
Operating cost
| Cost | PROPH50 T2 RH400-30 | RTGH-95DVLN-3 |
|---|---|---|
| Annual Operating Cost | $146/yrDifference: $104/yr | $250/yr |
| 10-Year Operating Cost | $1,460Difference: $1,040 | $2,500 |
| Annual Energy | 846 kWh | — |
10-year difference: $1,040 in favor of the PROPH50 T2 RH400-30, at current US average energy rates. Actual savings depend on local rates and usage patterns.
Costs vary by state. The PROPH50 T2 RH400-30 ranges from $93/yr (ND) to $352/yr (HI). The RTGH-95DVLN-3 ranges from $121/yr (ID) to $918/yr (HI).
$104/yr separates them. Install requirements determine the upfront gap. Installation accessories
Installation requirements
| Requirement | PROPH50 T2 RH400-30 | RTGH-95DVLN-3 |
|---|---|---|
| Voltage | 240V | 120VDifference: 120V |
| Amperage | 21A | — |
| Breaker | 30A | — |
| Vent Material | — | Category Iv Pvc Cpvc |
| Condensate Drain | Yesidentical | |
Install impact: different voltage (240V vs 120V). Switching between these units may affect your utility room setup.
Warranty
| Coverage | PROPH50 T2 RH400-30 | RTGH-95DVLN-3 |
|---|---|---|
| Tank | 10 yr | — |
| Heat Exchanger | — | 15 yr |
| Parts | 10 yrDifference: 5 yr | 5 yr |
| Labor | — | 1 yr |
Features
| Feature | PROPH50 T2 RH400-30 | RTGH-95DVLN-3 |
|---|---|---|
| Wi-Fi / Smart | Yes | No |
| Recirculation Ready | — | Yes |
| Refrigerant | R-134a | — |
Decision split
Pick this one if...
Rheem PROPH50 T2 RH400-30
- Your panel already has 240V service
- Minimizing energy cost matters (saves $104/yr)
- You want smart home / Wi-Fi control
- Peak efficiency is the priority (UEF 3.88)
Pick this one if...
Rheem RTGH-95DVLN-3
- Your ceiling or space is under 61.75"
- Your panel already has 120V service
Neither if...
- You have no floor drain and cannot add condensate handling
- Your install space is under 700 sq ft of open air
If you have decided, here is what the install requires.
Common install considerations for gas tankless 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