Rheem Heat Pump Water Heater Modes Explained: How to Choose the Right Setting

Your Hybrid Electric Heat Pump Water Heater has More than an ON/OFF Switch

Many homeowners leave their heat pump water heater in the default setting forever. But Rheem heat pump water heaters offer multiple operating modes designed for different situations, from everyday family use to holiday hosting and extended vacations. A quick adjustment can help you save energy, increase hot water availability, or reduce costs while you’re away.

Did you know about 35% to 40% of U.S. homes have a smart thermostat installed. Recent industry analyses place adoption at roughly 40% of households, reflecting significant growth over the past decade. (www.smarthomeexplorer.com/guides/smart-home-statistics-2026 )

What are Water Heater Operating Modes?

Think of Modes Like Driving Modes in Your Car

Just like many newer vehicles can switch between Eco Mode and Sport Mode, your Rheem heat pump water heater lets you prioritize:

• Energy savings
• Faster hot water recovery
• Increased hot water availability
• Vacation efficiency

Modes can be changed using the unit’s control panel or through the free EcoNet^® app. EcoNet offers scheduling and changing on the fly.

Mode #1: Energy Saver Mode

Best for Most Homes, Most of the Time

When to Use It

• Everyday family living
• Normal hot water usage
• Homeowners who want comfort and efficiency

Benefits

✅ High efficiency
✅ Fast recovery
✅ Good balance of comfort and savings

Real-Life Example

A family of four taking normal daily showers, running laundry, and washing dishes.

Bottom Line

This is the mode most homeowners should use year-round.

Mode #2: High Demand Mode

Best for Holidays, Guests, and Busy Weekends

When to Use It

• Family visiting for the holidays
• House guests staying overnight
• Multiple back-to-back showers
• Large laundry loads

Benefits

✅ Very fast hot water recovery
✅ More available hot water
✅ Better performance during periods of heavy demand

Trade-Off

Higher energy usage than Energy Saver Mode.

Real-Life Example

Four guests are staying for Thanksgiving and everyone is showering before dinner.

Pro Tip

Switch to High Demand a day before guests arrive and return to Energy Saver once they leave.

Mode #3: Heat Pump Mode

Best for Maximum Energy Savings

When to Use It

• One- or two-person households
• Homes with lower hot water demand
• Homeowners focused on reducing utility bills

Benefits

✅ Highest energy savings
✅ Lowest operating costs

Trade-Off

Slower recovery time.

Real-Life Example

A retired couple that uses hot water primarily in the morning and evening.

Bottom Line

You’ll save the most energy, but with less hot water availability during peak usage.

Mode #4: Electric Mode

Best for Extreme Hot Water Needs

When to Use It

• Exceptionally high hot water demand
• Very cold climates or cold incoming water temperatures
• Temporary periods when rapid recovery matters more than savings

Benefits

✅ Fast recovery
✅ Maximum hot water production

Trade-Off

❌ Lowest efficiency
❌ No heat pump energy savings

Real-Life Example

A house full of teenage athletes taking showers after a tournament weekend.

Important Note

Use this as a short-term comfort setting rather than a long-term operating mode.

Mode #5: Vacation Mode

Best When You’re Away from Home

When to Use It

• Vacations
• Business travel
• Seasonal homes
• Extended absences

Benefits

✅ Minimizes energy use
✅ Maintains water temperature around 65°F
✅ Helps reduce unnecessary energy costs

Ideal Length

2 to 28 days away from home.

Real-Life Example

Heading to the beach for two weeks? Set Vacation Mode before leaving and return to hot water when you get back.

Quick Reference Guide

If you’re…

Using hot water normally
→ Energy Saver Mode

Hosting guests
→ High Demand Mode

Trying to lower utility bills
→ Heat Pump Mode

Need maximum hot water right now
→ Electric Mode

Leaving town
→ Vacation Mode

Connecting and Changing Modes is Easier than you Think!

How to Change Modes (Wi-Fi Quick Connect Guide)

1. On the Unit

Use the touchscreen control panel to select a different operating mode.

2. From Anywhere

If your water heater is connected to the free EcoNet^® app, you can adjust operating modes, monitor usage, and receive alerts from your smartphone.

In Summary

Your Rheem^® heat pump water heater offers multiple operating modes that let you customize performance for your household’s needs. Whether you’re maximizing energy savings, preparing for guests, or heading out of town, choosing the right mode can help improve comfort, reduce energy costs, and get the most value from your water heater.

FAQ Section

Should I leave my water heater in Energy Saver Mode?

For most households, yes. It provides the best balance of efficiency, comfort, and hot water availability.

Does High Demand Mode use more electricity?

Yes. It prioritizes hot water production and recovery speed over maximum efficiency.

What mode saves the most money?

Heat Pump Mode generally delivers the highest energy savings when hot water demand is low.

Should I use Electric Mode all the time?

Most homeowners will see better energy savings with Energy Saver or Heat Pump Mode. Electric Mode is best reserved for periods of unusually high demand.

What should I do before going on vacation?

Activate Vacation Mode to reduce energy use while maintaining the tank at a safe temperature.