Rinnai REHP65

Last updated: October 21, 2026

Rinnai REHP65

A Midea-built heater with Rinnai’s support network and one of the few listings on Amazon. Check the seller is a Rinnai-authorized dealer before buying.

  • 65 galSize
  • 3.90UEF
  • 80 galFirst hour
  • 240 VPower
  • 37.4 °FRuns down to
  • 10 yr tankWarranty
Check price at Amazon$1,657.02

Price checked October 21, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Built by Midea, like several other brands here, with the same certified ratings
  • Delivers 80 gallons of hot water in the first hour, a lot for its size
  • 10-year tank and parts warranty plus 1 year of labor
Cons
  • Rinnai voids the warranty if the heater is bought from a dealer it hasn’t authorized
  • Louder than most at 49 dB(A); best kept away from bedrooms
  • No Wi-Fi or app control

How it scores

The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Specifications

Model numberREHP65
Ratings (ENERGY STAR)
Size (nominal)65 gal
Tank volume (measured)60 gal
Uniform Energy Factor3.90
First-hour rating80 gal
Draw patternHigh
Yearly energy use1,240 kWh
Heat pump cut-off (low)37.4 °F
Sound level49 dB(A)
ENERGY STAR ID3722797
Installation
Power240 V
Circuit30 A, 208/240 V
Backup element4,500 W
Operating air range37 to 107 °F
Minimum room size700 cu ft
Size45.5 in tall, 21.8 in across
Weight271 lb
RefrigerantR-134a
Features
Wi-FiNo
Demand response port (CTA-2045)Yes
Leak detectionNo
ModesEconomy, Heat Pump, Hybrid, E-Heater, Vacation
Warranty and models
Warranty10 yr tank, 10 yr parts, 1 yr labor
Released2024-09

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