RK Knight Plumbing
Company Overview
R.K. Knight Plumbing, located in Whittier, CA, has been a family-run establishment since 1956. At R.K. Knight Plumbing, we provide a wide range of plumbing solutions such as drain repair, trenchless drain repair, drain cleaning, hydro-jetting, plumbing fixture repair, commercial plumbing, water heaters, water lines, gas lines, and trenchless installations for water and gas mains, plus additional services!
In 1947, Ronald Knight Sr. started his journey in plumbing, working on new construction in the L.A. and Palm Springs areas. In 1956, he decided to launch his own venture, founding R.K. Knight Plumbing. In 1980, Ronald Knight Jr., the son of Sr., opted to continue the family legacy by joining the company. After many years of dedication to his family and hard work, Sr. passed away in 2007. Today, Ronald Jr. works alongside his two eldest sons, Ronnie III and Randy, to maintain this family heritage. Ronnie III holds the position of general manager, and Randy is among our highly trained technicians. Our family business is rounded out by Delia, our office manager, along with technicians Shawn and Memo.
I assumed control of this business from my father, who had taken it over from his dad. I love the opportunity to go to work, meet new individuals, and listen to their distinct stories. Helping someone with a problem they didn't foresee is always gratifying. Moreover, encountering someone who recalls me as a kid working alongside my grandpa is a unique feeling. I realized that my father and grandfather held great respect in our community and the plumbing field, and I aimed to attain that same honor.
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer 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: | 8:00 AM - 5:00 PM |
Tue: | 8:00 AM - 5:00 PM |
Wed: | 8:00 AM - 5:00 PM |
Thu: | 8:00 AM - 5:00 PM |
Fri: | 8:00 AM - 5:00 PM |
Sat: | 8:00 AM - 12:00 PM |
Sun: | Closed |
Recommended Customer Reviews

We very much appreciate RK Knight Plumbing and they are our plumber moving forward.
We had originally contacted this company because they are in Whittier and they had stellar reviews. But they were not available on the day I contacted them. Since we had a sewer issue and this home is a rental, I wanted to resolve it as quickly as possible for our tenants.
I contacted a different plumber in the area who was able to come out same day. Unfortunately, he not only was NOT able to resolve the matter, but he came up with a crazy list of stuff that didn't make sense and wanted thousands to do it, pressuring me with a panic tactic. I ended up pausing at this point in order to get a second opinion.
In the meantime, my husband contacted a buddy in the area and he said they knew the owners of RK really well and that they are who they recommend.
We contacted RK the following day, and they were able to get out there same day at this time. They immediately found the problem, and it was resolved within two hours.
They provided us with an estimate of adding a clean out at the front of the house for any future issues. The estimate provided was substantially less than the first plumber who wanted a fortune for a bunch of stuff that wasn't necessary.
We will be adding a clean out in the future to make any issues even easier to resolve.
They were professional, knowledgeable, polite, super nice and amazing. We will refer RK Plumbing every chance we get.

update Ron the owner came out Friday to try and fix my bathtub faucet he wanted to try and help me I do have a press in seats shower valves and he tried to grind down the seats and re install but still leaks he said it needs new seats which are very hard ti try and replace if you find them and if I decide to change out the unit it has to go through the outside walk stucco he referred me to an copper repipe that could do the job Ron at least tried to help me Thank you Ron I found the seats on line dont know when I'll receive it's just frustrating to know that something that should be simple turns into a major job because obsolete parts

Josh was awesome, very professional, polite and efficient, was able to find the problem quickly and boom ! They were done! Highly recommend this place

If it matters to you that your Plumber is Covid vaccinated, do not call RK Knight....I was told none of their plumbers were vaccinated but that they wear masks. I had an emergency so asked that distancing be observed. Shawn the plumber who came to my house said to me ""You gotta do what you gotta do"" and was, in fact, partly masked during the call. The work seems to be fine but I was uncomfortable during the entire time, so I can't recommend them.

Shawn came on time and polite. He fixed my washing machines pipes stoppage well and price is reasonable. Recommended this company

Plumbing can be the most draining service on a
House. It important to trust and feel confident with the service you are receiving. I am completely confident and appreciate the honestly given during my consultation. Josh & Hugo were great and thorough. Highly recommend their service.

We just bought our house so we had no idea what could be clogging our kitchen sink. Shawn was able to clear the clog quickly. He was very nice and professional.
It was easy to make an appointment and they are great about keeping you updated on their arrival time. I even received a text with the name and photo of the plumber that would be arriving, I really appreciated that!

Twice now my family has had plumbing issues that were somewhat major and of course, unexpected. Twice now we have called on RK Knight and they have been quick, professional and friendly. They have installed a tankless water heater and worked on a sink and a mainline back up. For the service and experience they supplied, I wouldn't even shop them as they have exceeded our expectations and we have been pleasantly surprised with their consistency. They will always get our business.

Great job as always! We have used their service for about 5 years with many jobs and every time they did a great job. They will be our go to plumbers as long as we live here!

I've been having RK knight plumbimg do all my plumbing work for 30 years plus! They do great work and as importantly you can trust them 100%! Highly recommend!