Flow Masters Plumbing, Drain and Water Heater
Licensed
Licensed
Contact for price
Drain problem
Responds within a day
Thumbtack Guarantee
If you hire this pro, you’re covered by a money-back guarantee. Learn more
If you hire this pro, you’re covered by a money-back guarantee. Learn more
About
We started Flow Masters Plumbing in 2011 with the simple goal一to deliver better plumbing and HVAC services to the Bay Area community.
We provide water heater; boilers; central heating & air conditioning; heat pumps; mini-splits repair; ducts and replacements.
Back in the ‘90s, Alan Moran honed his skills here in the city, while Fergal McMahon learned the trade alongside his father in Ireland. When our paths crossed, that goal took its first step toward becoming a reality. With just a few loyal clients, we worked tirelessly to build a reputation for quality and care. Over a decade later, we’re proud to serve San Francisco with the same dedication and passion that got us started.
Overview
Hired 3 times
Serves Daly City, CA
Background checked
License verified
22 employees
14 years in business
Business hours
SunClosedMon7:00 am - 6:00 pm
Payment methods
This pro accepts payments via Cash, Check, and Credit card.
Credentials
License verified
C16 - Fire Protection Contractor - CA state license
Background checked
Passed by Fergal Mcmahon on Aug 7, 2025.
Services offered
Drain problem
Repair urgency
I work on non-urgent repairs
I work on urgent repairs
Property type
House
Condo/Apartment
Townhouse
Business
Projects and media
8 photos
Projects and media
8 photos
Reviews
Excellent 4.9
75 reviews
5
96%
4
2%
3
1%
2
0%
1
1%
Read reviews that mention:
Past Customer
3 weeks ago
•
From Google
I called Thursday morning on a recommendation from our neighbors who were very happy with Flow Masters Plumbing & AJ was over to give an estimate that afternoon. He returned Friday afternoon & completed the job in less than an hour. I was concerned about the leak under the sink & all repairs & the installation of a new kitchen faucet were completed Friday. Thanks AJ!
Flow Masters Plumbing, Drain and Water Heater's reply
Thank you, Bill! We're so glad AJ was able to respond quickly and take care of the leak and faucet installation without delay. It means a lot to hear you were happy with the service. We'll be here anytime you need us!
Past Customer
Jul 12, 2025
•
From Google
Very fast to our plumbing emergency! Knowledgable, friendly, professional plumbers. Our blocked toilet resolved itself shortly before they arrived, but they checked everything anyway, just in case.
Flow Masters Plumbing, Drain and Water Heater's reply
Thank you, Mysti! We’re glad our team could respond quickly and still take the time to check everything, even after the blockage cleared. Peace of mind matters, and we’re always happy to help when something pops up!
Past Customer
4 weeks ago
•
From Google
Jeremy from FlowMasters was very knowledgeable and provided comprehensive information. I was impressed by his knowledge! I would recommend him and Flow Masters for future Fire Sprinkler and piping needs.Arnold Zamora
Flow Masters Plumbing, Drain and Water Heater's reply
Thank you, Arnold! We're glad Jeremy made a strong impression and was able to provide the insight you needed. We appreciate your recommendation and are here whenever you need help with fire sprinkler or piping work!
Past Customer
4 weeks ago
•
From Google
Called around 12, Alberto showed up at 1:30. Diagnosed the problem with my combi boiler quickly, took the time to explain the problem to me, and made the fix quickly. Friendly, knowledgeable, and got the job done. Will use again!
Flow Masters Plumbing, Drain and Water Heater's reply
Thank you, Alex! We're glad Alberto was able to get there fast, explain things clearly, and get your combi boiler fixed without hassle. Appreciate the kind words and look forward to helping again when you need us!
Past Customer
Jul 13, 2025
•
From Google
The team did an excellent job installing my new heat pump water heater. They completed the project plan and cleaned up superbly. They also explained the controls and maintenance points. I will, most likely, hire them again. Also, thanks to Tina for helping with the administrative tasks.
Flow Masters Plumbing, Drain and Water Heater's reply
Thank you, Marty! We're glad the team delivered a smooth and thorough heat pump water heater installation, and that everything from cleanup to explaining the system met your expectations. We'll pass along your thanks to Tina as well. Looking forward to helping you again in the future!