Top Backflow Preventer Installation Services in Baltimore, MD

Excellent work quality. Excellent responsiveness in communication. Excellent to keep appointment.

I am a property manager and I had them replace a fence for one of the homes I manage. Their price was fair, they were prompt and the work was of great quality. I am using them for other properties I have in the area.

They would not complete warranty repairs for a reputable warranty company because they had to produce proof of insurance. They would not even wait for me to call the warranty company over the phone to explain the price and how it would be paid. What a was...

Always a positive experience Professional, dependable and timely

O'Brian's Plumbing installed an outdoor bathroom for me and did an excellent job. It was a tricky job due to the distance from my house and the grade difference. Great Job O'Brian's!!!!

I have used O'Brians plumbing many times over the years from small jobs to large major jobs. When I had no hot water he was at my house in hours and by the afternoon I had a new hot water heater. He is always at my house in a timely manner, does great wo...

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O'Brian's Plumbing came out quickly and gave me a good price. Job is completed and well done. That are reputable and very nice to work with.

Brian replaced a toilet, shower heads, a sump pump, unclogged drains, drained our hot water heater. He did a great job and was professional and prompt. Would definitely recommend.

I have rental properties and whenever I need a plumber I call Brian. He always comes asap to check the problem. He calls explaining the problem and gives details on what needs to be done along with the estimate. He performs the work on a timely basis....

Brian's work is always great! He prides himself in providing top level service and always stands by his work.

My Dad was in Florida when his furnace failed, and all the pipes in the house froze solid, Brian's company was recommended to me, I called and he was right there, worked for several days to repair the furnace and fix many broken pipes, when it was all don...