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"The biggest difference is the size. Residential HVAC systems are much smaller and commercial units are much larger because they need to cool a much larger space. Also, commercial units are usually placed on the roof of the structure, which doesn’t happen with residential. The warranties also vary between commercial and residential. Residential units tend to have better warranty programs.\r\n"
<https://legacyohio.com/commercial-hvac-gahanna/>