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Homeowner Resources

Explore 1,000+ articles designed to guide you through every stage of your home improvement project.

A tankless water heater installed on the side of a house.

Plumbing

Understanding UEF Ratings for Water Heaters: What You Need to Know

Choosing the Right Water Heater Starts With the UEF Rating When comparing water heaters for your home, understanding efficiency ratings is key to selecting the most cost-effective system. One of the most important terms you’ll come across is Uniform Energy Factor (UEF). This rating helps determine how efficiently a water heater converts energy into hot…