Are Empire heaters more energy-efficient than Rinnai models?

Efficiency Comparison

When comparing Empire and Rinnai heat propane wall heaters, it’s essential to consider the efficiency of each model. Empire heaters typically have a higher AFUE (Annual Fuel Utilization Efficiency) rating, with some models reaching up to 83% AFUE, compared to Rinnai’s 72-80% AFUE rating. This means Empire heaters convert a higher percentage of propane into usable heat.

Technical Considerations

The efficiency of Empire and Rinnai heaters also depends on factors like combustion air flow, burner design, and heat exchanger performance. Empire’s proprietary combustion system and advanced heat exchanger technology contribute to its higher efficiency. On the other hand, Rinnai’s heaters often rely on more traditional designs, which can lead to energy losses. For example, Empire’s 80,000 BTU model has a 3.2 CFM combustion air requirement, whereas Rinnai’s 80,000 BTU model requires 4.5 CFM, indicating Empire’s more efficient combustion system.

Real-World Impact

In practical terms, the difference in efficiency between Empire and Rinnai heaters translates to lower energy bills and reduced carbon emissions. For instance, if a homeowner uses an Empire heater with an 83% AFUE rating and a Rinnai heater with a 75% AFUE rating, the Empire heater would convert 8.3% more of the propane into usable heat, resulting in cost savings and a reduced environmental impact.