Professional and straight shooters
I called a few other plumbers and none would give me any idea of the cost. All wanted to charge an up front fee. I called Arrowhead and the owner, Derrick, picked up (at 9 or 10PM!). He talked me through checking a couple of things over the phone and helped me get a warranty swap on a water heater that they didn't even install.
His plumbers were knowledgeable and courteous and took all the crummy, below code stuff in my utility closet up to code.