RK Knight Plumbing
Company Overview
Since 1956, R.K. Knight Plumbing in Whittier, CA has proudly operated as a family-owned business. Our plumbing services encompass drain repair, trenchless drain repair, drain cleaning, hydro-jetting, plumbing fixture repair, commercial plumbing, water heaters, water lines, gas lines, and trenchless installations for both water and gas mains, among other services!
Starting in 1947, Ronald Knight Sr. engaged in plumbing, specializing in new construction throughout the L.A. and Palm Springs locales. In 1956, he made the decision to establish his own company, R.K. Knight Plumbing. In 1980, Ronald Knight Jr., Sr.'s son, chose to follow in his father's footsteps and joined the family business. After years of commitment to his family and labor, Sr. left us in 2007. Currently, Ronald Jr. is joined by his two oldest sons, Ronnie III and Randy, to carry on this family tradition. As the general manager, Ronnie III oversees operations, and Randy is one of our expert technicians. Delia, our office manager, along with technicians Shawn and Memo, complete our family-oriented team.
I took over this business from my father, who succeeded his father. I love the opportunity to go to work, meet new individuals, and listen to their distinct stories. It always feels rewarding to assist someone with an unexpected issue. Additionally, meeting someone who remembers me as a child working with my grandfather is a rare and special experience. 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

Sink clogged, but now working. Shawn came out did a great job. Very trustworthy. I have used them in the past and will continue to use them

Fast friendly service. I used their reviews to make an appointment. Glad I did. Delia called me kept me updated and was friendly from day 1.
Sean the plumber was awesome. Glad I did business with them! Highly recommended

I was recommended R.K. Knight by a co-worker. Ronnie was very friendly and helpful over the phone when I called to make an appointment.
Josh came over went over everything with my family on what needed to be done, gave us options. He was friendly, knowledgeable did great work. Once he was finished he cleaned up the area that was worked on. Thank you R.K. Knight plumbing , thank you Josh! The best Service ever!

Living in uptown Whittier calls for dealing with OLD pipes. After calling RK, they sent over 2 great technicians who helped unclog the bathroom tub and even came through next day for the kitchen sink drain. Great customer service and great deals if you check in on yelp

RK Knight is always fantastic. We've called them several times. They are timely, efficient and they tell you the cost before they start working. Sean helped us out today. I'm extremely satisfied. He was even able to give me a referral for additional work that I need done.

I needed my garbage disposal replaced, so I went out and bought one. I called R.K. Knight to come out and install it. They were there for less than 45 minutes, but on their paperwork they put that they were there about 2 hours. They charged me $245 to install a disposal. Really?
I won't be calling them again. I feel I was overcharged.

Clean out drain in front of my house was overflowing every time the toilet was flushed. Attempted to snake it myself to clear up clog but it didn't work so called RK Knight plumbing and they had someone at my house in less than 30 min. Josh was friendly, helpful and knowledgeable about our situation. Fixed issue quick I am very satisfied and will definitely you them for future issues.

On time service, effective work and Josh was a professional friendly plumber. Will use this service again. Much appreciated.

Their customer service was good and they were open on a Saturday so as far as communication they do well in that area.
We are a Hair Salon so we're very busy we needed an emergency service because our water heater shut off and we only had cold water running for clients. Technician came within 30 minutes he was there for about 15 minutes did a few tests come to find out that the reset button on the water heater need to be pressed. THey charged us about $200. Less than 2 weeks later that issue is still happening. Me list to say they did not fully repair or solve the problem just temporarily when we called and asked for them to come take a look and actually let us know why it was not working they told us we would have to pay again and because it was a reset button issue.
I would not recommend this company.

R.K. Knight Plumbing has been to our home several times to fix our plumbing, install a new water heater, etc. They are very good plumbers and they do a great job! Ronnie, the owner is a very polite, professional, nice, and friendly man. Shawn, also does a great job. We highly recommend them. After they complete a job, they always send us a nice thank you note which we really appreciate. Thank you R.K. Knight for always doing a great job for us!
Sincerely,
Elisa & Gina Almanza - Whittier, CA