When buying a commercial range hood designed for heavy use, make sure that it has a restaurant ventilation system. It should have an up blast fan that’ll effectively clear out the smoke and fumes. In addition, this unit should be ETL listed and meet all the necessary fire codes. Range hoods for commercial use must have baffle filters which are not only aesthetically pleasing but are designed to last long. Pick one that comes with hood accessories such as duct access panels and hood filters. Preferably opt for one that has a long warranty period from a reputable contractor.