Red Wrench Plumbing
Company Overview
I focus on kitchen, bathroom, and laundry renovations. I provide installation for both tank and on-demand water heaters. I take care of gas line issues, whether repair or replacement. I handle leaks of all kinds. I build out kitchens for homes and businesses, covering everything from underground piping to the finishing details. I collaborate effectively with inspectors, property owners, and architects to tackle any challenges that come up. I handle minor repairs like faucet, garbage disposal, and toilet work, including repair, replacement, or installation. All work is done to a high professional standard. I do not offer drain cleaning services.
I have been a plumber in San Francisco for a decade. When I launched my business, I oversaw all plumbing work for a general contractor. In recent years, I have focused on build-outs, remodels, and trim work for that same contractor. I still collaborate with them, but I am now open to taking on more of my own projects.
I am originally from Birmingham, England. I have spent the last ten years plumbing in San Francisco. I take pleasure in plumbing, fixing issues, and finding solutions. I got my plumbing license in 2011. I call San Francisco home and am raising my family in this city.
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Faucet installation
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 9:00 AM - 5:00 PM |
Tue: | 7:30 AM - 5:30 PM |
Wed: | 7:30 AM - 5:30 PM |
Thu: | 7:30 AM - 5:30 PM |
Fri: | 7:30 AM - 5:30 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Sean is the BEST! I highly recommend him.
I had a pipe that had been giving me trouble for FIVE MONTHS and after Sean came into the picture, it was Wam! bam! THANK YOU, MAN!
My pipe is officially fixed and I am a happy camper.
Not only is he Mr. fix It, but his kind demeanor and ""get it done"" attitude are very refreshing.
Thanks, Sean!!!

Sean is fantastic. He helped me when I was in a bind to install a new washer and dryer into a tight closet in my home. The water, gas, and exhaust were all difficult to deal with, but he figured out a solution. Moreover, he's a great guy, very interesting, and a Bernal Heights neighbor!

Was referred to Sean from the neighborhood list serve and ended up referring him to several others including my good friends (who raved about his work). The bottom line is I highly recommend Sean and his work. He has great work ethic and gets the job done right. He was extremely patient and kind while we went through a very disorganized remodel. Thanks again Sean on all the wonderful work you did on our home! Really appreciate it!

My shower had a small, slow drip that consumed about 5g/day. I called Sean to inspect it and he initially suggested to just put a bucket under it and use it to water my lawn. I'm always impressed when a service provider suggests not doing a repair that would make them money bc it shows that they care more about their customers than just making a fast buck. If we weren't in a drought I'd have thanked Sean for his time and gone out to get a bucket. But bc of the water situation his year I decided to have him repair it. He checked out what part I needed to replace (a cartridge) and called me a couple of days later when he'd gotten one. He returned and got the job done quickly, professionally and at a fair price. What more can you ask?

Sean from Red Wrench replaced the broken drain assembly on my bathroom sink expediently and expertly. He arrived promptly and was very through. He checked out a few other plumbing issues after fixing my drain such as adjusting the hot water flow which was low and replacing the aerator on the faucet, free of charge, which made a huge improvement. I am very pleased with the service Sean delivered and would highly recommend using Red Wrench Plumbing.

Sean was just another dad in the park. We said hello as we pushed our kids from the swings. As the years wore on, we became friends and eventually asked each other the specifics of the others life. My family is a huge fan of Sean as dad in the park, he is a great dad and sweet, funny, and a nice guy. It wasn't until this past year that we got to know Sean as professional awesome plumber. We have used the same contractor for years so never needed a plumber until we lost our contractor. We needed an industrial sink put into our garage in a pinch. Our pipes are old and confusing. Sean came and looked at job and said it would be easy. He was so amazing and by far the cleanest, fastest and most competent person we have ever had do work at our house. We are gearing up for a big remodel this next year and will definitely be asking Red Wrench to take on the job.

I've never actually hired a plumber before, but Sean was awesome - really friendly, very knowledgable, and fast! He knew exactly what was going on with every single plumbing issue I mentioned and fixed it all perfectly. I'd highly recommend him and will definitely hire him for any plumbing-related tasks in the future.

I needed to move my washer/dryer to a new location. Sean was professional and efficient in his service and knowledge of plumbing and gas. In addition, he took the time to be clear in explaining what he was doing and why. Sean is personably, dependable and honest and I would recommend him to anyone needing a trusting and professional plumber.
A month or so later
My hot water heater pilot light was not staying lite. I called Sean and told him the problem, he was able to shuffle his schedule and fit me in early the next day!
Not only did he fix the problem but he noticed the warranty was about to expire so he gave the whole thing a once over to make sure there wasn't any thing els that was about to go, so i could have it covered under my warranty, No extra charge. Amazing

liked that Sean was not part of a multi plumber company, he was on time, efficeint, knowledgeable. would hire Sean again if I have another project.

Kudos to the ever reliable Cole Hardware referral service for connecting us with the awesome Sean McGrillen at Red Wrench Plumbing. When our ancient water heater died he was able to replace it the same day we called him and at a very reasonable price. A couple of weeks later Sean saved the day when our upstairs bathroom sprung a leak hours before we were leaving town on vacation. He was at our house within an hour and solved the problem in no time. Toilet fixed and vacation back on schedule. Professional, capable and a delight to work with, we won't hesitate to call Sean the next time we are in need of his services. Five stars indeed.