Bad quality. If it is possible, I wanna leave no star. Few days ago, a newbie technician came here, he couldn’t fix anything just took picture and sent it to office to getting answers. Finally he concluded no problem at all although there are no air flow from duct. and few hours later he just did paper work and asked me $ 60 for visiting. because that time I got to work, so I just gave him $ 60. and call him again to talk about duct system problem and he blocked my phone number. When I called with different number he answered and said«I will be there tomorrow». but he didn’t show up. If you wanna waste your $ 60, call to this repairing company.