Wish I could give zero stars. They won out in a bidding war for installation and product at my company. Only guy who came in and actually took the time to give me an estimate. I wish I knew then that all he was doing was priming me to get screwed.So we went with his company. When installing they cut several electrical lines and supplies that had no business being touched and rerouted them. This caused lights and utilities in other parts of our building to stop working (although we didn't know that until later). They also never installed the exhaust system properly, ruining the flooring around our system.To top it off, they had installed a filter that was incapable of handling our machine's needs. Because of this they had to come replace the filter monthly, or else the machine would shut down. Got another company in to look at the machine and they are still fixing problems and surprises that this outfit left. And we got a filtration system that actually fits our needs.