About Us

Proudly Serving Tulsa Homes for Generations

Mullin Plumbing has been a trusted name in Tulsa for decades, built on a foundation of honesty, quality, and dependable residential service. From the beginning, our mission has been simple: take care of people the way we’d want to be treated. We’ve grown through hard work, word of mouth, and a true commitment to our community. Whether we’re fixing a leak or installing a new HVAC system, our goal is to make life easier for local homeowners. When you call Mullin, you’re calling a neighbor who cares.

Over 50 Years of Experience

We’re Here To Help 24/7


Our Story

Mullin Plumbing, Inc. has proudly served the plumbing needs of Oklahoma residents since 1973. Founded by Jim Mullin as a local drain and septic service provider, the company built its reputation on honest work and dependable service. In the early 1990s, Jim’s son Markwayne Mullin stepped in to lead the company and transformed it into a full-service plumbing business offering installation, repairs, and maintenance. Under Markwayne’s leadership, Mullin Plumbing expanded rapidly, reaching more homeowners and building a loyal customer base. When he left the business in 2011 to pursue a career in politics, he passed the torch to trusted long-time managers Rob Morris and Ray Trimble.

Rob, now CEO, and Ray, now COO, brought decades of internal experience and a shared commitment to continuing Mullin’s legacy. Together, they added a heating and air conditioning division, modernized operations, and ensured the company stayed rooted in the communities it serves. Their leadership has kept Mullin grounded in its core mission: being reliable, local professionals who care deeply about the people they serve. Today, with 105 signature red vans on the road, Mullin Plumbing continues to serve homes across Tulsa and Oklahoma City. As we celebrate 50 years, our promise remains the same—honest service, done right.
Our fleet of

105

red service vans are ready to help keep your home comfortable.

Meet Our Leadership Team

Ray Trimble, Chief Operating Officer

Ray Trimble is the Chief Operating Officer at Mullin Inc, bringing over 20 years of dedicated service to the company. Residing in Broken Arrow, Oklahoma, he is happily married to Missy Trimble, celebrating 29 years together. Their family includes two sons, Triston and Tyler, as well as a daughter-in-law, Sanora. Ray is a seasoned radio host, having led the “House Talk” shows for 18 years on both 1170 AM The Blitz and KRMG 102.3 FM.

His guiding philosophy is encapsulated in his favorite quote: “If serving is beneath you, then leading is beyond you.” Ray’s passion for people and commitment to his work are the hallmarks of his professional journey.

Robert Morris, Chief Executive Officer

Robert Morris serves as the Chief Executive Officer of Mullin Inc. He has been a resident of Tulsa, OK since 1984. Happily married with three grown children and five grandchildren, enjoying the family life. His career in plumbing industry began at Mullin Plumbing in 1988, where he started as an apprentice. Demonstrating commitment and skill, he obtained his journeyman and contractor’s licenses in 1995.

His exemplary leadership and extensive industry knowledge led to his appointment as CEO of Mullin Plumbing in 2011, marking a significant milestone in his professional journey.

Hear from a technician

Lupe has been a Mullin Employee for over 25 years

“We’re like family...in 25 years you get to know everybody - you get to know the customers and become friends with them.”
- Lupe, Mullin Plumbing

Careers at Mullin Plumbing

People are the heart of Mullin Plumbing, Inc., which is why we invest in hands-on training, monthly safety and skills classes, and a dedicated support team. Our employees enjoy competitive benefits—including health, dental, and prescription coverage—plus generous PTO and a 401K with company match. Ready to grow your career with a company that invests in you? Join Mullin Plumbing.

Comprehensive Training

Excellent Benefits

Safety First

Contact the Mullin Team

Don’t wait around for plumbing or HVAC issues to get worse—Mullin Plumbing is ready to help. Our trusted team serves Tulsa homeowners with fast, professional service you can rely on. Whether you need routine maintenance, urgent repairs, or expert advice, we make it easy to get the help you need. Just give us a call or schedule online at your convenience. We’re here to keep your home comfortable, safe, and running smoothly.
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What Tulsans Are Saying

Homeowners all across Tulsa trust Mullin Plumbing to get the job done right—and they’re not shy about sharing their experience. With so many 5-star reviews, our reputation is built on quality work, honest service, and a team that truly cares. From emergency calls to everyday maintenance, our customers know they can count on us. We’re proud to be a name Tulsa families recommend again and again.
Quick fix for someone who knows what there doing. Daniel did a great job
Thomas Goheen
3 days ago
Excellent as always! Very knowledgeable kind compassionate capable and helpful! Caught a leak that could have caused us trouble! So grateful!!!
Dianita Patuel
3 days ago
Excellent work. Very professional.
Linda H M
4 days ago
I had plumbers come out four times. There was nothing wrong with my toilet until i let them change the flange and wax ring. I originally called them because my other bathroom the flange was rusted out. So when they fixed that we talked about just doing the other bathroom too because it was old also.. It was a little rusted but he went and changed it all. That's when my toilet started leaking at bottom. They came out three more times and changed the wax ring. They never lifted toilet all the way up. One plumber would pick up high enough for the other plumber would slip a new wax ring. I told them they needed to check flange out but they wouldn't. They said they need to jack hammer my floor and put in new pipes. Thats when I decided I need another plumber. I called Mullins. Dalton came out and as I watched him lift toilet and sit to side. It was an awful mess. Wax everywhere and the flange was cracked up. They did nit secure it down. Dalton did the job promptly and cleaned up all the old wax. Inserted and secured flange down. New wax ring. I ✋️ a week before I used toilet to let floor dry out. I've been using it now for a few days. Thank God it was dry. It appears the leak was fixed. Dalton was a pleasure to be around. He was professional. Thank you Dalton for doing the job correctly. It was expensive but it was done right. I dont have to worry about the toilet leaking anymore. I give advice five star rating.
Linda Tintle
4 days ago
Very nice employees and did a great job.
Tatum Johnson
4 days ago
Always Mullin Plumbing!!! The level of service was exceptional. Chase Charlton, the technician, was extremely competent and professional.
Ivan Dovgun
4 days ago
Wow I could not have asked for a better plumber to fix my water line so quick and efficiently. I was very impressed the way he did the job. I want to personally thank Bryce Wilden for a job well done. A polit and Curtis gentleman. Thanks again to MarkWayne and his company. God Bless Yoi ALL
Craig Minton
4 days ago
This young gentleman was so polite and he even wore a little booties on his feet so I didn’t drag the dirt in the house that was so so nice of him…. He did a great job didn’t make a mess and he was extremely fast and I’m very thankful. He did a great job.! Give him a raise!!!!! 🥰
Deborah Edwards-Morgan
5 days ago
max gregory is so professional and spent the extra time needed to address the issue we were having with our aerobic system! thank you!
teresa mims
5 days ago
Great job: kept me informed. Professional and courteous Thanks for your prompt response. Mary Ray
Craig Ray
5 days ago
Awesome job and professionalism as usual. Thank you
melissa billings
5 days ago
I pay them monthly to care for my aerator septic tank. They keep their appointed assignments to check it at the proper scheduled time. The company I had before would miss some scheduled times and I would have to call them, but Mullin is always on top of it. When I have had an extra situation to appear and I call them, they come out right away to take care of the issues. One time the system went out and if I had not been paying the monthly fee it would have been very costly for me. They do good honest service and always email the report when they service my septic system.
worship Palmer
5 days ago

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