I had them come out to my house in Casa Grande about a month ago. Something didn't seem right after I had my vents cleaned as i was still getting tons of dirt. I called on Friday and they sent a tech out first thing this morning to check things out. They offered to redo my whole system free of charge. This is an amazing company with great customer service. I will always use them in the future for any of my AC/Vents/ or carpet cleaning. Thank you guys for the quick response and amazing customer service. I only wish other business had such professional customer service.