It had been some time since we had checked our dryer duct and vent because we can't access the connection behind the stacked dryer. Leighton came over to check everything out including the wind speed of the air coming out of the vent on the second floor. (He had 10 steps to run through and did them all.) I was very impressed with Leighton's professionalism, how pleasant he is and how careful he was while on our property. I would highly recommend Dryer Vent Wizard.