Alan O' Neill is the CEO of Abacus Plumbing and stands by the Abacus slogan, "You Can Count On Us."Honesty and integrity are hallmarks of the Abacus business philosophy and are the foundation upon which the company was founded.Abacus Plumbing Company comes highly recommended by Tom Tynan who has a well deserved reputation for providing unbiased advice to the Houston homeowner.You can count on the analysis of your plumbing and air conditioning and heating problem as well as their recommendations and the quality of the work. State of the art plumbing and hvac supplies and equipment mean your job is performed in a professional and efficient manner.

Coupons (2)

Hi there!
Rate this business!
First-classBetter than mostAbout what I expectedNot the worst...Disappointing
Click to Rate


Share Review

Like this review? Share it on your social network to get the word out!

Lizzie G.


Provided by

Our first time to contact Abacus for plumbing and we were so pleased with the quality of service. It started with a pre-call to let us know when the technician would arrive and ended with us signing up to be members. Chris was exceptional and knew exactly how to fix our problem. He was professional, courteous and respectful of our home. We will ask for him every time. We felt very confident that the job was done right the first time!  Thank you!  (And Chris deserves a raise!!!)

Samantha W.


Provided by

Our technician was knowledgeable, efficient, courteous, patient, neat/clean and did an extraordinary job! It required some detective work and he nailed it! I can't praise him enough, he's off the scale on 1-10! Abacus experience was terrific. From initial call to follow up, they were courteous and helpful.

Thigpen A.


Provided by

Antoine provided semi-annual air conditioner checkup. He was very courteous and spent time explaining what he would be doing during the check-up. While performing his work he answered questions and further explained what he was seeing. He also gave a great explanation of a potential upgrade we may consider adding to our system without providing a sales pitch. Great job Antoine!

Vanbuskirk N.


Provided by

Larry is absolutely amazing. He fully explained everything before beginning the job and then quickly, efficiently and professionally completed the task. He takes great care and pride in his work, and you can tell because his work, when complete, is almost like art; the wiring is so neat and organized. Larry is also very friendly and personable and it was a pleasure to have him work on our home. Your company continues to amaze us with their exceptional workers and work ethic. My wife and I are so glad that we selected you.

Jacob S.


Provided by

Aaron was very professional; knowledgeable and meticulous! That's why I always call you. I can count that whatever I need will be done correctly. And the customer service is excellent....Thank you!

Laraine B.


Provided by

He was Great!! I learned a lot today . He educated me on what not to do & what I can put in the garbage despoil. He showed me what was in the pipes. Thank You ! He knew I was upset in the first place about why I took things in my on hands just cannot live without the kitchen sinks. I'm so thankful for his service.

Laws C.


Provided by

We called Abacus in a frenzy after I accidentally broke the water pipe to our washer in our laundry room while installing our brand new washer and dryer. The technician arrived at our home and he was both extremely professional and just genuinely nice. He showed up to our house ahead of schedule and kept me updated and informed as he worked. He was very personal and turned a negative experience of a broken pipe into a very pleasant visit. My wife and I thoroughly enjoyed having him in our home while doing such fantastic work in such a timely manner. If you offered 11 stars, I would give them to him in this survey! Thanks again!

Christi M.


Provided by

Our technician was great! Explained all the details of the work that was necessary and offered me options. Very pleased.

Bruton N.


Provided by

I am a technical person, so I take a lot of interest in the maintenance / repair of our home’s appliances, and that means I usually watch so I can learn. Over the course of 2-3 years I’ve watched Tren’s technical approach to HVAC work. He uses the same methodology each time….one can see the mental wheels clicking through the checkpoints as he goes about his work. I am sure he has discovered a process that works well for him time after time, and he has committed the process to memory.

Dilley C.


Provided by

I truly appreciate the entire Abacus team! My experience with Abacus started years ago as a plumbing company. I am pleased to have A/C and electrical added. When I have needed Abacus, they have been there for "me" the customer. Thank you!

Proper K.


Provided by

Jason, who did my plumbing inspection was just the kind of person I would want in my home. He explained things to me in a way I understood. He is a good person to represent your company. I would be glad to recommend your company to a neighbor, a friend, or family member.

David J.


Provided by

Calling Abacus Plumbing was the best decision I could have ever made. The technician was extremely courteous and very professional. He did an outstanding job tackling the plumbing issue head on with all the necessary tools and equipment while maintaining cleanliness of the area as well. It was comforting witnessing the actual results of the repair by means of a video camera. Thanks!

Mccafferty L.


Provided by

I'm so glad I called you today! The plumber was extremely helpful and super friendly, and worked very hard through the evening. He was exactly on time for the appointment, and was very knowledgeable! Another technician was also here for a little while, and was also very very friendly and experienced! They were able to explain my issue with certainty - and how to help prevent it from happening again, and even showed me the video feed of the fiber optic cable in my pipes! I would absolutely recommend them and the company to anyone I know! Thanks again!

French T.


Provided by

Abacus team always arrives when they say they will be there. They take the time to explain my issue and answer all my questions. They make sure I'm comfortable with what needs to be done and the cost before starting the job.

Monaco Y.


Provided by

The technician was on time and immediately introduced himself. He listened to my issues and did not dismiss my distress. After checking to ensure that u had no other immediate plumbing problems, he fixed the issue fur which I called. He then checked the clean out and scoped the sewer line. He explained some issues that he detected and did not press me to act when I explained that I was not the homeowner and that I would share the problem with the owner to decide what to do. Before leaving the technician made sure that everything was clean and in order. I would recommend your company.

Galvan A.


Provided by

We are very pleased with all the work that Abacus has done for us. Besides the heating and AC, they have done some plumbing for us. They will always be the first people we call with anything that goes wrong at our house.

Marylou K.


Provided by

Mr. Rodriguez is a professional in every sense of the description. He told me what he was going to do and when he moved to another location he explained what and why and culminating with an out briefing that was followed up with an email of his presentation. Of all your service personnel that have visited, he stands out as number uno!

Nikkia P.


Provided by

A very excellent call. I believe the technician could have done the instillation with his eyes closed. I could not tell that anyone was here after he left. I would not use another plumbing company. Abacus is number one in my phone book.

Ashford J.


Provided by

Abacus always treats us right, clearly explains any issues and provides good service. Good company with good staff.

Karen H.


Provided by

Our technician was very helpful and patient with our situation. He wore sole covers for the bottom of his boots to protect our flooring before entering our home. He thoroughly explained our alternatives so we could work toward a solution. Before beginning, he checked in with his manager to let him know the progress of work being completed.

More Business Info

"You Can Count On Us"

The Only Plumbing Company Endorsed By Tom Tynan

Regular Hours
Mon - Sun:
Extra Phones

Phone: 713-812-7070

ac coil repair ac coil replacement AC Repair AC Service Air Conditioning & Heating Air Conditioning Checkup Air Conditioning Tune Ups Condenser Coil Condenser Fan Motor Replacement Condenser Repair Condenser Replacement Condenser Unit Drain Cleaning Drain Repair Electrical Inspections Electrical Panel Electrical Repairs Electrical Service Electricians faucet replacement Furnace Inspection gas line installation gas line repair Heating Inspection Leak Detection Pipe Replacement Plumbers Plumbing plumbing inspection Repipe Surge Protection Tankless Water Heaters Water Heater Repair Water heater replacement
American Standard Air, Kohler, Lennox Air Conditioning, Mitsubishi Electric Ductless, Rinnai
Payment method
debit, check, cash, all major credit cards, financing available
George Bush Intercontinental Airport
English, Spanish

License# TACLB82488E

License# Alan O'Neill M-20628

License# TECL 30557

American Standard Customer Care Dealer

Technician Seal Of Safety

BBB Winner Of Distinction. Preferred Plumber

Plumbers, Bathroom Remodeling, Building Construction Consultants, Building Contractors, Building Contractors-Commercial & Industrial, Construction Consultants, Heating Contractors & Specialties, Heating Equipment & Systems, Home Improvements, Home Repair & Maintenance, Plumbing Contractors-Commercial & Industrial, Plumbing, Drains & Sewer Consultants, Plumbing-Drain & Sewer Cleaning, Sewer Cleaners & Repairers, Sewer Contractors, Water Consultants, Water Damage Emergency Service, Water Filtration & Purification Equipment, Water Heater Repair, Water Heaters, Water Softening & Conditioning Equipment & Service