Large roof top unit air conditioners are an excellent source of cool, dry air for any commercial construction project or permanent replacement. These temporary air conditioners can duct into a permanent system to supply adequate cooling until repairs are made. With the new OSHA construction heat stress guidelines, project managers and superintendents are renting air conditioners to keep jobsites below 80 degrees in the summer. These large 25-ton air conditions are ideal to cool buildings while also reducing the humidity levels. These lower humidity levels help to greatly reduce dry times of paints, sheetrock mud, and Gypcrete. General contractors also need to remain constant of building materials special temperature and relative humidity needs. Falling outside of these parameters will void warranties and the products will not perform appropriately.