Rinnai REHP65
#8 in 65 GallonFull review
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.
Amazon $1,657.02$1,657.02
The Rinnai REHP65 rates 3.7 among 65 gallon heat pump water heaters; the Rinnai REHP80 rates 3.7 among 80 gallon ones. The Rinnai REHP65 costs $1,041.98 less ($1,657.02 vs $2,699).
Rinnai REHP80
#7 in 80 GallonFull review
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.
Amazon $2,699$2,699
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (65 gallon and 80 gallon), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Rinnai REHP65 | Rinnai REHP80 |
|---|---|---|
| Overall rating | 3.7/5 | 3.7/5 |
| Efficiency 35% | 64 3.90 UEF | 71 4.00 UEF |
| Hot water 20% | 80 80 gallons in the first hour | 64 91 gallons in the first hour |
| Warranty 20% | 75 10-year tank, 10-year parts, 1-year labor | 75 10-year tank, 10-year parts, 1-year labor |
| Cold rooms 15% | 30 heat pump runs down to 37.4 °F room air | 30 heat pump runs down to 37.4 °F room air |
| Noise 10% | 44 49 dB(A) | 44 49 dB(A) |
Specifications
| Rinnai REHP65 | Rinnai REHP80 | |
|---|---|---|
| Ratings (ENERGY STAR) | ||
| Size (nominal) | 65 gal | 80 gal |
| Tank volume (measured) | 60 gal | 75 gal |
| Uniform Energy Factor | 3.90 | 4.00 |
| First-hour rating | 80 gal | 91 gal |
| Draw pattern | High | High |
| Yearly energy use | 1,240 kWh | 1,225 kWh |
| Heat pump cut-off (low) | 37.4 °F | 37.4 °F |
| Sound level | 49 dB(A) | 49 dB(A) |
| ENERGY STAR ID | 3722797 | 3531242 |
| Installation | ||
| Power | 240 V | 240 V |
| Circuit | 30 A, 208/240 V | 30 A, 208/240 V |
| Backup element | 4,500 W | 4,500 W |
| Operating air range | 37 to 107 °F | 37 to 107 °F |
| Minimum room size | 700 cu ft | 700 cu ft |
| Size | 45.5 in tall, 21.8 in across | 74.2 in tall, 25.7 in across |
| Weight | 271 lb | 290 lb |
| Refrigerant | R-134a | R-134a |
| Features | ||
| Wi-Fi | No | No |
| Demand response port (CTA-2045) | Yes | - |
| Leak detection | No | No |
| Modes | Economy, Heat Pump, Hybrid, E-Heater, Vacation | Economy, Heat Pump, Hybrid, E-Heater, Vacation |
| Warranty and models | ||
| Warranty | 10 yr tank, 10 yr parts, 1 yr labor | 10 yr tank, 10 yr parts, 1 yr labor |
| Released | 2024-09 | 2024-08 |