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<div>I am modeling a two story office building that is 20,000 square feet. The actual building employs a packaged rooftop unit with VAV's and electric reheat. If I read ASHRAE 90.1 correctly, I am to use System 4 for the baseline modeling. This is in stark contrast to what is actually installed. </div>
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<div>If I am understanding this correctly, do I take from this that Packaged Single Zone Heat Pumps are preferred in this application? </div>
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<div>Thanks,</div>
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<div>Mike Porter<br>
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