Rheem Heat Pump Water Heater Review 2025: Energy Savings & Performance

This review explores the Rheem heat pump water heater, a high-efficiency alternative to traditional electric or gas models. Heat pump technology extracts heat from the surrounding air to warm water, significantly reducing energy consumption and lowering utility bills. We delve into the key features, performance characteristics, and installation considerations of this innovative water heating solution, examining its suitability for various climates and household sizes. From optimal placement and sizing recommendations to maintenance tips and cost analysis, this comprehensive review provides homeowners with the information needed to determine if a Rheem heat pump water heater is the right choice for their needs.This review covers Rheem's range of heat pump water heaters, analyzing their energy savings potential, operating modes, and long-term cost-effectiveness. We assess the impact of factors like climate, hot water demand, and available rebates on the overall return on investment. The pros and cons of this technology are discussed, helping readers weigh the benefits of increased efficiency and reduced environmental impact against the higher upfront cost and installation requirements. Ultimately, this review aims to equip homeowners with the knowledge necessary to make an informed decision about upgrading to a Rheem heat pump water heater.

Pros And Cons

Rheem Hybrid Hot Water Heater
  • More energy efficient than normal electrical or gas hot water heaters
  • Works particularly well in mild to hot climates
  • Takes heat and humidity out of the air and helps cool off your home
  • First hour rating is very similar to an electric hot water heater
  • Has a backup electrical element
  • High demand mode for high hot water usage
  • Simple and easy to operate
  • Available in various tank capacities (40, 50, 65, 80 gallons)
  • 10-year warranty
  • Lasts between 13 to 15 years with proper maintenance
  • Energy saver mode maximizes heat pump operation and minimizes electric element use
  • Taller than a normal water heater
  • Needs adequate space (6-8 inches on top for ventilation) and may require a larger room (8ft x 12ft or larger) or ducting to the outside for proper ventilation
  • Less efficient in colder climates (below 40°F)
  • Produces fan white noise, comparable to a dishwasher

Read more: Nuwave PIC Titanium Induction Cooktop Review: A Mixed Bag of Features

What is a Hybrid/Heat Pump Water Heater?

A hybrid water heater, also known as a heat pump water heater, uses a heat pump to warm water. This heat pump extracts heat from the surrounding air (garage, attic, etc.) and transfers it to the water tank, making it significantly more energy-efficient than traditional electric or gas water heaters. This innovative technology makes it a cost-effective option for many homeowners.

The unit's design typically features a heat pump unit on top, ranging from a foot and a half in height. The efficiency comes from using ambient air for heating, rather than solely relying on electricity to heat the water directly.

Ideal Homeowner and Climate for Heat Pump Water Heaters

Heat pump water heaters are particularly well-suited for homes with moderate to high hot water usage and high electricity rates. They excel in mild to hot climates where ambient air temperatures provide ample heat for the pump to transfer to the water. Locations such as garages or attics are highly suitable due to typically higher temperatures.

However, even in less ideal climates, these heaters often perform well, utilizing a backup electrical element. It is crucial to consider factors such as climate and hot water demands to evaluate if this type of heater suits your home

Installation Location and Requirements

Optimal placement is in a well-ventilated area like a garage, attic, or basement. The unit requires ample airflow, so it's not recommended for poorly ventilated closets unless they have louvered doors. If in a closet, the unit needs to breathe. A vented system can be used which pipes the unit's intake and exhaust to the outside.

The presenter discussing ventilation requirements
The presenter discussing ventilation requirements

Space requirements vary but generally aim for a room of at least 8 feet x 12 feet with an 8-foot ceiling. Consider using a ducting kit for installation in smaller spaces or less ideal locations.

Hot Water Capacity and Sizing

Rheem offers these heaters in 40, 50, 65, and 80-gallon capacities, with 50 gallons being the most popular. For sizing, it's recommended to go one size up from your current electric water heater (e.g., 40-gallon to 50-gallon). If upgrading from a gas water heater or using the 120-volt model, size up by two sizes (e.g., 40-gallon to 65-gallon).

Consider your household size and hot water usage patterns when determining the optimal size. A 40-gallon tank suits one to two people, a 50-gallon tank is suitable for two to four, and a 65-gallon for five to six people or more.

Operation Modes and Features

The Rheem unit has multiple operating modes: Energy Saver (recommended), High Demand (for increased hot water), Heat Pump Only (minimal power consumption), Electric Only (for service), and Vacation (maintains a minimum temperature). The control panel allows easy adjustment of temperature and mode selection.

The presenter explaining the operating modes of the water heater
The presenter explaining the operating modes of the water heater

A dedicated app offers alerts for leaks, energy usage reports, and daily scheduling capabilities. This app allows for remote control and management of the water heater settings.

The presenter discussing the app features
The presenter discussing the app features

Maintenance and Lifespan

Like all water heaters, regular maintenance is crucial. Annual flushing is recommended to remove sediment buildup, especially in hard water areas. Replacing the anode rod every five to six years helps prevent corrosion. The filter screen should also be cleaned periodically.

Proper maintenance extends the lifespan of the unit, which typically ranges from 13 to 15 years. Ignoring maintenance can lead to premature failure and increased repair costs.

Pros and Cons of Rheem Heat Pump Water Heaters

**Pros:** High energy efficiency, cost savings over time, reduced carbon footprint, various operating modes for flexibility, quiet operation, and relatively long lifespan with proper maintenance.

**Cons:** Taller than standard water heaters, requires ample ventilation space, less efficient in very cold climates (though it has a backup element), and higher initial purchase cost (though often offset by rebates and savings).

Cost, Rebates, and Overall Value

The initial cost typically ranges from $2,000 to $5,000, including installation. However, significant rebates and tax credits (up to $2,000 with the Inflation Reduction Act) are often available. State and local utility programs may also offer additional incentives.

The return on investment can vary but energy star estimates a family of four can save approximately $550 annually (potentially much more with inflation). Overall, a heat pump water heater can often pay for itself within two to five years.

Conclusion: Is a Rheem Heat Pump Water Heater Worth It?

The Rheem heat pump water heater offers significant long-term energy savings and environmental benefits. While the initial investment is higher than traditional heaters, rebates and ongoing savings can make it a worthwhile upgrade. The factors to consider are climate, hot water usage, and electricity/gas prices.

If you have a suitable location for installation and meet the other criteria, then a heat pump water heater might well be a worthwhile investment.