Milton Frank Plumbing & Cooling have been my plumbers of choice for over 30 years, and they have done so much work for me. During my last experience with them, they put in a new tankless water heater. They are expensive, but are good at what they do, and stand behind their work. I know they will be there if anything happens, and to me, that is worth the extra price. They only send me my favorite plumber, whom I trust. We've had our issues in the past, but there is no one else I'd rather have to work in my home. Jessica also does a lot of good work in the marketing department. They have a longevity around Houston, which is uncommon. I always recommend them, and will absolutely continue to use them.