Top 4 Heat Pump Water Heaters for 2027: Best Choices for San Jose Homeowners

If you are planning to replace your water heater in 2027, a heat pump water heater may be one of the most energy-efficient options for your San Jose home. Heat pump technology has improved significantly, and today’s hybrid electric water heaters can deliver reliable hot water while using substantially less electricity than a conventional electric tank water heater.

At Local Rooter Corp, we install and service water heaters throughout San Jose and the surrounding Bay Area. One of the most common questions homeowners ask us is: What is the best heat pump water heater to buy?

The answer depends on your household size, available installation space, electrical system, hot-water demand, budget, and whether you are replacing an existing gas or electric water heater.

Based on the current product lines and specifications available heading toward 2027, here are four heat pump water heaters San Jose homeowners should consider.

Quick Comparison: Best Heat Pump Water Heaters for 2027

Heat Pump Water Heater	Best For	Available Sizes	Key Advantage
Rheem ProTerra	Best Overall	40–80 gallons	High efficiency and strong feature set
Bradford White AeroTherm G2	Best Professional-Grade Option	50–80 gallons	Up to 4.20 UEF
A.O. Smith Voltex AL	Best for Efficiency & Leak Protection	50–80 gallons	High UEF and anti-leak technology
Rheem 120V Plug-In ProTerra	Best Gas-to-Heat-Pump Conversion	40–80 gallons depending on model	120V installation options

Product specifications vary by model and capacity. Always confirm the current model specifications before purchasing.

1. Rheem ProTerra Hybrid Electric Heat Pump Water Heater – Best Overall

The Rheem ProTerra remains one of our top heat pump water heater choices heading into 2027.

Rheem offers ProTerra models in multiple configurations and capacities, including 40-, 50-, 65-, and 80-gallon options. Certain current models reach a Uniform Energy Factor (UEF) of up to 4.07, making them considerably more efficient than conventional electric resistance water heaters.

UEF is an important number when comparing water heaters. Generally, the higher the UEF, the more efficiently the water heater converts or moves energy to provide hot water.

Why We Like the Rheem ProTerra

One major advantage is flexibility. Depending on the model, homeowners can get features such as:

• Built-in Wi-Fi

• Leak detection

• Automatic leak-prevention features

• Multiple tank capacities

• Hybrid heat pump operation

• Duct-ready configurations

• Different electrical configurations

Rheem states that its ProTerra hybrid electric heat pump models can be up to four times more efficient than a standard electric water heater.

For San Jose homeowners who want to electrify their homes, reduce energy consumption, or replace an older electric tank, the ProTerra deserves serious consideration.

Best For

The Rheem ProTerra is especially attractive for:

Families of 2–3 people: Consider a 50-gallon model.

Families of 3–5 people: A 65-gallon model may provide better hot-water recovery and reserve capacity.

Larger households: An 80-gallon heat pump water heater may be the better choice when installation space permits.

Correct sizing is important because heat pump water heaters typically recover differently from conventional gas water heaters. We recommend sizing the system according to the home's actual hot-water demand rather than simply replacing an old tank with the same gallon capacity.

2. Bradford White AeroTherm G2 – Best Professional-Grade Heat Pump Water Heater

The Bradford White AeroTherm G2 is another excellent choice for homeowners looking for a high-efficiency heat pump water heater in San Jose.

Bradford White's newer AeroTherm G2 lineup is available in 50-, 65-, and 80-gallon capacities and reaches a UEF of up to 4.20 on the 65-gallon model.

That level of efficiency makes the AeroTherm G2 particularly interesting for homeowners who are focused on long-term energy consumption.

Why We Like the Bradford White AeroTherm G2

The AeroTherm G2 combines high efficiency with features designed to improve usability and installation flexibility.

Current G2 features include:

• Up to 4.20 UEF

• 50-, 65-, and 80-gallon capacities

• Five operating modes

• Integrated connectivity

• Digital controls

• Quieter operation

• Smaller footprint compared with the previous generation

• ENERGY STAR certification

Bradford White also incorporates its Wave connectivity, allowing compatible units to provide remote control functions such as temperature adjustments, scheduling, and energy-use tracking.

For homeowners who prefer equipment commonly supplied and installed through professional plumbing channels, Bradford White is a strong candidate.

Best For

We particularly like the AeroTherm G2 for homeowners who prioritize:

High energy efficiency

Professional installation

Long-term reliability

Smart controls

Larger household hot-water requirements

The 65-gallon configuration is particularly interesting because of its combination of capacity and high UEF.

3. A.O. Smith Voltex AL – Best for Efficiency and Leak Protection

Another heat pump water heater worth considering for 2027 is the A.O. Smith Voltex AL Hybrid Electric Heat Pump Water Heater.

A.O. Smith introduced the Voltex AL with a focus on efficiency, installation flexibility, connectivity, and leak protection.

According to A.O. Smith, the 66-gallon Voltex AL has achieved a UEF of 4.02, while its 50-gallon version reaches a UEF of 3.8. The product line also includes an 80-gallon configuration.

Why We Like the A.O. Smith Voltex AL

The Voltex AL combines several features homeowners increasingly expect from premium water heaters.

These include:

• High UEF ratings

• Integrated leak detection

• Smart connectivity

• Installation-friendly water connections

• Multiple tank sizes

• Hybrid electric heat pump technology

Leak detection is especially valuable in Bay Area homes where a water heater may be installed inside a garage, utility room, closet, or another location where an unnoticed tank leak could cause significant property damage.

No leak-protection system eliminates every possibility of water damage, but early detection can provide an important additional layer of protection.

Potential Energy Savings

A.O. Smith states that the Voltex AL can save homeowners up to $521 per year compared with a standard electric water heater, although actual savings will depend on electricity rates, household hot-water usage, operating mode, installation conditions, and the water heater being replaced.

For San Jose homeowners replacing an older conventional electric water heater, this is one model worth discussing with a licensed plumber.

4. Rheem 120V Plug-In ProTerra – Best for Replacing a Gas Water Heater

One of the biggest challenges when converting from a traditional gas water heater to a heat pump water heater can be the electrical requirements.

That is why Rheem's 120V plug-in heat pump water heaters are particularly interesting for Bay Area homeowners.

Certain Rheem ProTerra plug-in models are designed specifically to make replacing a conventional gas water heater easier.

For example, Rheem currently offers a 50-gallon 120V dedicated-circuit ProTerra with a 3.0 UEF, ENERGY STAR certification, Wi-Fi connectivity, a factory-installed power cord, and a 10-year limited tank and parts warranty.

Rheem also offers 120V configurations with HydroBoost and leak-detection technology.

Why This Matters in San Jose

• Many older San Jose homes currently have gas water heaters.

• Changing to a conventional 240V heat pump water heater can potentially require electrical work depending on the home's existing panel, circuit availability, wiring, and water-heater location.

• A compatible 120V heat pump model may simplify certain gas-to-electric conversions.

However, 120V does not automatically mean it is the right choice for every home. Hot-water recovery, household demand, electrical requirements, installation location, and manufacturer specifications still need to be evaluated.

For households with heavier hot-water usage, a larger 240V hybrid system may be more appropriate.

What Size Heat Pump Water Heater Do You Need?

Sizing is one of the most important parts of a successful heat pump water heater installation.

Do not choose a water heater based only on tank capacity.

A plumber should consider:

• Number of people in the household

• Number of bathrooms

• Simultaneous shower usage

• Bathtub size

• Dishwasher and laundry usage

• First Hour Rating

• Recovery requirements

• Available installation space

• Electrical capacity

• Ambient air temperature and volume

A household that previously used a 50-gallon gas water heater may sometimes benefit from moving to a 65- or 80-gallon heat pump water heater, depending on usage patterns.

This is because gas burners can provide rapid recovery, while a heat pump prioritizes efficiency by moving heat from the surrounding air into the tank.

Heat Pump Water Heater Installation Requirements

• Heat pump water heaters should not simply be treated as standard electric tanks.

• The heat pump pulls heat from the surrounding air and transfers it into the stored water—essentially using a refrigeration cycle in reverse.

• Installation therefore requires consideration of several factors.

Space and Airflow

The unit needs adequate airflow. A small enclosed closet may require modifications, ducting, or another installation strategy depending on the manufacturer.

Condensate Drain

Heat pump water heaters generate condensation during operation.

A properly installed condensate drain is therefore required. Depending on the location, this may involve gravity drainage or a condensate pump.

Electrical Requirements

The plumber and electrician may need to determine whether the selected model requires:

• 120V power

• 240V power

• Dedicated circuit

• Electrical panel modifications

• New wiring or breaker

Water Connections

Existing hot and cold water lines may also require modification, particularly when changing water-heater types or tank dimensions.

Seismic Requirements

Water heater installations in California also need to comply with applicable seismic strapping and local code requirements.

Are Heat Pump Water Heaters Worth It in San Jose?

For many homeowners, yes.

Heat pump water heaters can be particularly attractive if you are:

• Replacing an older electric water heater

• Electrifying your home

• Installing solar panels

• Remodeling your home

• Replacing a failing gas water heater

• Looking to reduce household energy consumption

• Planning a long-term home upgrade

The biggest advantage is efficiency.

Rather than creating all of their heat directly through electric resistance, heat pump water heaters move heat from the surrounding air into the water. That is why high-efficiency models can achieve UEF ratings above 3.0 and even above 4.0.

Our Top Heat Pump Water Heater Picks for 2027

If we were narrowing the choices for a San Jose homeowner heading into 2027, our shortlist would be:

• Best Overall: Rheem ProTerra Hybrid Electric

• Best High-Efficiency Professional Option: Bradford White AeroTherm G2

• Best for Efficiency + Leak Protection: A.O. Smith Voltex AL

• Best for Certain Gas-to-Electric Conversions: Rheem 120V Plug-In ProTerra

There is no single model that is best for every house.

The correct choice depends heavily on your home's electrical system, water-heater location, household size, available space, existing plumbing, and daily hot-water demand.

Heat Pump Water Heater Installation in San Jose, CA

If you're considering a heat pump water heater installation in San Jose, Local Rooter & Plumbing can evaluate your existing system and help determine the appropriate replacement.

Before recommending a unit, we can evaluate factors such as the existing gas or electric connection, tank location, available space, water piping, condensate drainage requirements, household hot-water demand, and installation requirements.

We provide professional water heater installation and replacement in San Jose and surrounding Bay Area communities.

Whether you are considering a Rheem ProTerra, Bradford White AeroTherm, A.O. Smith Voltex, or another heat pump water heater, choosing the correct size and installing it properly are just as important as choosing the brand.

Need a new heat pump water heater in San Jose? Contact Local Rooter & Plumbing to discuss your water heater replacement and installation options.