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How Much Energy Does a Trane Rooftop Unit Use?

Many of Trane's rooftop units are packaged heating, ventilation and air conditioning (HVAC) units. The size of an HVAC unit determines how much heating or cooling energy it releases into a building. An HVAC's sizing is measured in tons, MBHs or British thermal units (BTUs). A ton is equal to 12,000 BTUs. Most of Trane's rooftop units use natural gas or electricity for creating a building's heat. The energy efficiency is measured using the SEER (seasonal energy efficiency ratio) rating.
  1. Intellipak

    • The Trane Intellipak Roof Systems have a sizing of 20 to 130 tons, or 240,000 to 1.56 million BTUs. For air conditioning, the Intellipak uses its Economizer, an energy-efficient mechanism that automatically draws in outdoor air for free-cooling. Intellipak produces heat from electricity, steam or natural gas, depending on the model. Electric heat units run on 48-amp circuits; the circuits contain nickel-chromium heating elements.

    Intellipak II

    • Trane's Intellipak II Roof Systems are a slightly larger variation of the Intellipak. Intellipak II has a sizing of 90 to 162 tons, or 1.08 to 1.94 million BTUs. Depending on the model, Intellipak II units provide 850 to 2,500 MBH of gas heat energy; a MBH is equivalent to 1,000 BTUs. Intellipak II units with electric heaters have a unit withstand rating of 480 volts or 600 volts.

    Voyager

    • Trane's Voyager roof units have a slightly smaller energy output than the Intellipak units. The smaller Voyager rooftop systems offer 12.5 to 25 tons, or 150,000 to 250,000 BTUs. Larger Voyager models have a sizing of 27.5 to 50 tons, or 330,000 to 600,000 BTUs. These HVAC rooftop systems have an annual fuel utilization efficiency (AFUE) rating of 81 percent. The smallest sized, gas-fired Voyager, which has a size of 12.5 tons, provides a 150 to 250 MBH gas heating performance.

    Precedent

    • The smallest of Trane's roof units is the Precedent, which has a sizing of 3 to 10 tons, or 36,000 to 120,000 BTUs. Precedent roof units have a SEER rating of 17.5. The SEER rating is the air conditioning's cooling output divided by the total electric energy input in watt-hours at the same time.