• Apartments
• Appliances & Electronics
• Designing & Remodeling
• Electricity
• Energy Assessments
• Insulation & Air Sealing
• Landscaping
• Lighting & Daylighting
• Space Heating & Cooling
• Water Heating
  • Water Heater Selection
    • Costs
    • Energy Efficiency
    • Fuels
    • Sizing
    • Demand Water Heaters
    • Heat Pump Water Heaters
    • Solar Water Heaters
    • Storage Water Heaters
    • Tankless Coil & Indirect Water Heaters
  • Energy-Efficient Water Heating
  • Swimming Pool Heating
• Windows, Doors & Skylights

Determining a Water Heater's Energy Efficiency

Before you purchase a water heater for your home, it's important to know how energy efficient it is. Usually the most energy-efficient water heater models or systems are more expensive. However, if you purchase an energy-efficient model, you may save more money in the long run on your water heating bills than if you purchase a less efficient model.

Here you'll find information about how to determine the energy efficiency of these systems:

• Solar water heaters
• Storage, demand (tankless or instantaneous), and heat pump water heaters
• Tankless coil and indirect water heaters.

Don't choose a water heater model based solely on its energy efficiency rating. You also need to consider its:

• Fuel type and availability
• Size
• Costs.

Related Information

• Energy-Efficient Water Heating

Learn More

Features

Find Appliance Rebates in Your State

Find What You Needed?