is 512.00 KB, has a resolution of 926x1546 pixels and was uploaded on December 17, 2018 @ 2:23 pm by user: elsetto. It is filed under the tags: gas heater, efficiency, natural gas, seasonal energy efficiency ratio, heat pump. Click the blue button at the top to freely download: Hvac Furnace Trane Annual Fuel Utilization Efficiency HVAC Air Conditioning png.