These guys came within an hour, two days after Christmas, when I had a houseful of company. Two men came to take care of a leak I had coming from an upstairs bathroom into a downstairs bathroom, also leaking into a light fixture. I was impressed with: the professionalism (explained what they thought the problem was, what they were going to do, kept me informed with each step), the promptness (coming within an hour of my call), their "pipeside manner" (like a doctor's "bedside manner"- very kind and very thorough). Their hunch as to what was wrong proved to be exactly correct. Although I've used good plumbers before, I will call Thunderbird plumbing first if I need a plumber in the future.