Energy Efficiency Ratings for Propane Water Heaters — What's Important?

Understanding Energy Factor Ratings

The Energy Factor (EF) rating for a water heater is a measure of its overall efficiency, taking into account the energy used to heat water, as well as the amount of heat lost through the tank and other factors. The UEF rating is similar, but it also considers the effects of sediment buildup and other factors that can impact efficiency. When comparing water heaters, look for models with EF or UEF ratings above 0.90, as these will be the most efficient.

Key Considerations for Propane Water Heaters

When choosing a propane water heater, consider the tank size and type. Larger tanks may hold more water, but they also require more propane to heat. Look for models with a first-hour rating (FHR) of at least 60 gallons to ensure you have enough hot water for your needs. Additionally, consider the type of heating element: electric, gas, or a combination of both. Electric elements are generally more efficient, but gas elements can provide more consistent heat.

Choosing the Right Propane Water Heater

When selecting a propane water heater, also consider the installation requirements and costs. A properly sized and installed water heater can ensure efficient operation and minimize energy consumption. Consider hiring a professional to install the water heater, especially if you are unsure about the process. Additionally, look for water heaters with a warranty of at least 6 years, and consider purchasing a model with an Energy Star certification, which indicates that it meets energy efficiency standards set by the U.S. Environmental Protection Agency.