First Environmental has worked for me doing cleaning, vacuuming and hydro blasting, work since 2007 for both of our process lines. They clean our large duct system and their associated fans on a bi-weekly basis.
First Environmental has always performed their duties professionally and has always worked safely. Their behavior and work knowledge required to protect against injury, both to themselves and to our employees, is excellent.
I would highly recommend that you use First Environmental for their all around accuracy and the ownership they take in helping to maintain the equipment that they are asked to clean.