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Heater Types

Heat Pump Water HeatersHigh-efficiency electric replacements and hybrid tanks.Condensing Tankless Water HeatersCondensing whole-home flow with venting constraints.Gas Tank Water HeatersStraight swaps when gas storage is still the fit.

Plan Your Swap

Sizing guideCapacity, first-hour rating, and temperature-rise fit.Accessories hubInstall extras, code-adjacent parts, and paid-link accessory picks.Upgrade from 50 Gallon Electric TO HEAT PUMPUpgrade from 50 Gallon GAS TO HEAT PUMPUpgrade from 65 Gallon TO HEAT PUMPUpgrade from 80 Gallon TO HEAT PUMPUpgrade from GAS TO ElectricUpgrade from GAS TO TanklessHPTA 50 2 vs HPTA 80 2HPTS 50 2 vs NHP50NHP120 vs PROPH80 T2 RH400 30NPE 210S2 vs NPE 240S2NWP500S050AUMB vs NHP50PROPH40 T2 RH400 30 vs PROPH50 T2 RH400 30

Guides & Data

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Brands

A.O. Smith Water HeatersBradford White Water HeatersNavien Water HeatersNoritz Water HeatersRheem Water HeatersRinnai Water HeatersTakagi Water Heaters
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Comparison

RE2HP50-1NCTT vs PROPH50 T2 RH400-30

Heat Pump vs Heat Pump for specs, cost, and install fit.
Both are 45-gallon heat pump water heaters. Efficiency is nearly identical. The RE2HP50-1NCTT saves $2/year to operate. All figures from published specs and EIA energy prices.

Performance

SpecRE2HP50-1NCTT
Bradford White · Heat Pump
PROPH50 T2 RH400-30
Rheem · Heat Pump
UEF3.89Difference: 0.013.88
Capacity45 galidentical
First Hour Rating65 gal67 galDifference: 2 gal
kW Input4.60 kW4.50 kWDifference: 0.10 kW
But does it fit? Sizing guide

Physical dimensions

DimensionRE2HP50-1NCTTPROPH50 T2 RH400-30
Height46.10"Difference: 15.65"61.75"
Width18"Difference: 4.25"22.25"
Depth22.50"
Weight218 lbs185 lbsDifference: 33 lbs
The PROPH50 T2 RH400-30 is taller. Fit checked. Now the operating cost.

Operating cost

CostRE2HP50-1NCTTPROPH50 T2 RH400-30
Annual Operating Cost$144/yrDifference: $2/yr$146/yr
10-Year Operating Cost$1,440Difference: $20$1,460
Annual Energy835 kWhDifference: 11 kWh846 kWh
10-year modeled difference is $20. At this scale, local energy rates, usage patterns, and install costs matter more than the efficiency delta.

Costs vary by state. The RE2HP50-1NCTT ranges from $92/yr (ND) to $348/yr (HI). The PROPH50 T2 RH400-30 ranges from $93/yr (ND) to $352/yr (HI).

$2/yr separates them. Install requirements determine the upfront gap. Installation accessories

Installation requirements

RequirementRE2HP50-1NCTTPROPH50 T2 RH400-30
Voltage240Videntical
Amperage19ADifference: 2A21A
Breaker30A
Condensate DrainYes
Same electrical requirements. Swapping between these units should not require electrical changes.

Warranty

CoverageRE2HP50-1NCTTPROPH50 T2 RH400-30
Tank10 yridentical
Parts10 yr

Features

FeatureRE2HP50-1NCTTPROPH50 T2 RH400-30
Wi-Fi / SmartYes
RefrigerantR-134aidentical

Decision split

Pick this one if...

Bradford White RE2HP50-1NCTT

  • Your ceiling or space is under 61.75"

Pick this one if...

Rheem PROPH50 T2 RH400-30

  • 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.

Thermal Expansion Tank Often required by code Check on Amazon (paid link)
Water Heater Drain Pan Often required by code Check on Amazon (paid link)
Earthquake Straps (Seismic Restraints) Often required by code Check on Amazon (paid link)
Full accessories list
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Sources. ENERGY STAR, manufacturer spec sheets, EIA average energy prices.Methodology