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Abacus Plumbing CO We are Open 24 Hours a Day for Standard and Emergency Plumbing, Electrical and HVAC Repairs*. Houston Plumber, Drain, Sewer, Rooter, Electrician and Air Conditioning repair and replacement company offers 24 Hour Emergency services. Abacus can resolve any issues that may arise within your home.

Abacus' residential and commercial plumbers are proficient at repairing all kinds of plumbing issues, including gas and electric water heaters, slab leaks, leaky pipes to hydro jetting clogged drains.Many plumbing problems are not DIY types of jobs, call Abacus so one of our licensed plumbers can fix your problem.
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Abacus is a leading provider of plumbing, air conditioner repairs, and electrical services in the greater Houston, TX metro area. Established in 2003, the company has garnered a reputation for top-notch service and the highest quality workmanship. I've known Alan O'Neill for more than 20 years and his company, Abacus is head and shoulders over every other plumbing company in Houston.
Every Abacus technician is trained to the highest standards, insured, and committed to 100% customer satisfaction. To protect your flooring, all of our technicians wear shoe covers, while also employing other efficient and safe techniques to make sure we leave your home exactly as we found it. In fact, many of our HVAC service professionals have passed rigorous N.A.T.E service and installation training and all of our HVAC & Plumbing Technicians, as well as our Electricians are licensed in the state of Texas.
ABACUS has been in the industry for over 18 years and we are growing! We are hiring and looking for family oriented, fun, hard-working, organized and positive customer service Plumbers, HVAC Technicians and Electricians! We work together as a cohesive group, to become part of something bigger than one individual to achieve a common goal.
Founded in 2003, Abacus Plumbing, Air Conditioning, and Electrical is a licensed and insured HVAC company providing air conditioning repair services in Houston. Its certified NATE technicians repair all cooling system brands, including Lennox, Maytag, Goodman, Carrier, American Standard, Amana, Rheem, Ruud, and Trane.
Reviews (23)
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Ollie Cat
May 24, 2022
I am very satisfied with Abacus! I called them yesterday afternoon around 3pm to see if they could send someone over to clear out a kitchen clog that was also backing up into our master bathroom sink. The lady that took my request was friendly and stated that they could help the next day. First thing in the morning around 8am, I receive a call that the service tech Ali would be at my house within 45 mins.

He arrived on time and after a brief discussion, he evaluated the situation and gave recommendations along with options. We choose the option we felt good about with NO pressure ever from him! We agreed to perform the cleanup service from the inside kitchen sink area. He did a great job keeping everything perfectly clean! He even put the booties on the wheels of the cleanup machine to roll through the house!

Extremely professional, polite and informative. He also explained about a plumbing maintenance plan that I had already been researching on their website. It is very affordable and offers value including flushing my water heater annually. My first time using Abacus and I'm very happy with the plumbing side of their business thus far! Great job Ali!
Cherilyn Wood
May 21, 2022
There are plenty of companies out there who claim to do what Abacus does, but there aren't many who stand behind their work the way Abacus does. When I want something done right and I want to feel safe in knowing the work done is guaranteed or they'll make it right, I call Abacus. My Mom first recommended them to me in 2004 when I bought my first home.

I have used them for numerous repairs and services & have never been disappointed. Their technicians are fully trained & second to none in customer service & professionalism. Call Abacus. You won't be disappointed.
Chad Scholz
May 18, 2022
Jose showed up on time and was very professional. He had all the tools to complete the job and finished very quickly. He walked me through exactly what he was going to do and completed the job without any problem. Who is knowledgeable, courteous, and professional. I would highly recommend Jose. Services: Electrical panel replacement or upgrading, Electrical panel repair
Jesse Lozano
May 16, 2022
Our electrical technician was Jose Ruiz and he did a super job! He explained everything clearly and how he would do the work for the estimate we had him come do. Everything sounded so good, price and process, we had Jose do the work right on the spot instead of waiting. As you can see by the photos, he did fast and great work and we are very pleased with it all. We will have Abacus/Jose come do all our future electrical needs!
Taylor Petty
Apr 09, 2022
Great experience with their plumber Julio Arenas. Prompt, professional, courteous, completely comfortable addressing the many questions and concerns I had, and had all the parts needed for my job in his service vehicle. Thank you Julio. I did have a little difficulty with their scheduling system. Schedulers and dispatch were professional and courteous but didn't seem to record my requested appointment window correctly. I had to rearrange my plans to meet Julio. I still give five stars for Julio's exceptional service.
Alisha Young
Apr 07, 2022
Initially I called Abacus for a couple loose/flickering light switches in the house - I used the on-line appointment scheduler and got a text with a photo of the technician scheduled to come to the house for next day without any issue. It turned out the electrical breaker panel was outdated, not up to code and not grounded properly. Journeyman Electrician Michael was able to identify additional problematic light panels/electrical outlets during his check and come up with an estimate (with a few coupons) for a much bigger job (upgrading the electrical panel and adding an outdoor fireman's breaker) with photos documenting these problem areas.

We were able to schedule for the electrical panel upgrade, with a lifetime warranty, for next day with Anthony. The upgrade with a fireman's breaker on the outside was done with great care and attentions to details -- unlike the previous breakers, the new outdoor portion of the electrical panel box was secured to the studs/sealed/secured. Anthony was very professional, friendly, and showed us the key upgrades as he worked in the garage and backyard.

And he did replace all loose light switches and faulty outlets, for which I called scheduled Abacus in the first place. The visit ended with Anthony sending me photos of the repair/upgrade, some of which I attached to this review. Overall, very happy with the services.
C. B.
Feb 08, 2022
Tony C. (the certified plumber) with Abacus was the best. He was fast, professional, courtesy, and fixed my urgent issue immediately. I usually stay away from big name companies but Abacus made me a customer for life! The person that answered my late night Sunday call was kind and professional. I loved the ability to track my technician throughout the appointment. This really was standout customer service throughout. Thank you guys so much! I HIGHLY recommend them.
Vi Le
Jan 30, 2022
Eduardo did an amazing job! He arrived on time and performed the install with little disruption to my work from home schedule. Him and his son were fast, friendly, and very helpful! They took time to explain to me what they were doing and how to maintain the equipment in the future. Definitely a great reason to maintain your Abacus subscription. From start to finish they were very respectful of my home and made sure that everything was nice and clean before leaving. Highly recommended.
Sharon Lane
Jan 29, 2022
I have a leak at the water meter. Will was great. I learned a lot! More work to be done, but I was very pleased.
Barbara Turboff
Jan 27, 2022
Doug Palacios was excellent. Very knowledgeable, reliable, and courteous. He goes above and beyond to make sure he does the job right. Thanks ABACUS for employing such a thorough worker. From now on I will be calling you all first.
Jesse Oneal
Jan 27, 2022
The response time was great when I call abacus the service tech that came out knew his business. What he was doing he found the problem, the part was not available he had the part within 48 hours came in and replaced the part, less than an hour it was the heating unit in the Attic. The blower had gone out he spoke very knowledgeable about what he had done and what he was going to do great service no complaint will continue to use them in the future.
Jessica Palmer
Jan 26, 2022
David Daniel, he was very polite I'd highly recommend to have him come out again. He told us the issue, gave us estimates for future installments. Made sure the repair wasn't gonna leak or anything else. Not many people I'd have encountered are like him. He greeted us, him and my husband talked the whole time he was repairing our hot water hoses. And for my husband that means a lot if he really likes someone.

He enjoyed the interaction from our technician, he was pleasant to be around. I am late updating my review but if you need abacus out to, I'd recommend asking for David Daniel!
Cheryl Randolph
Jan 23, 2022
Jason is exceptionally skilled, professional, thorough, and extremely hard-working. It is rare to find someone who is also thoughtful and courteous and considers homeowner education important. It is very clear he strives for perfection in his career. Fantastic job! Service: Leak investigation and repair
Neal Nandi
Jan 22, 2022
Alonso was amazing. He took so much time to answer all our questions. He did great work. We would recommend Him with complete confidence.
Garrett Childers
Jan 22, 2022
The technician was wonderful and beyond nice. Abacus however charges absurd prices and won't give you a quote over the phone for simple tasks in hopes that by the time you wait all day for them to show up you feel obligated to use them. They wanted ~$700 to hang 3 light fixtures, the items alone didn't even cost that much. Don't waste your time, they care about your $$ and that's it. Shocked anyone would ever be a returning customer.
Andrea Faith
Jan 20, 2022
Th technician was prompt and efficient and friendly technician. they do the follow ups every 6 months.
Andrea Taylor Exum
Jan 17, 2022
Excellent customer service! Bryan came out and got things working again, along with showing other things that need to be corrected with wiring. Really appreciate his expertise!
Shane Morgan
Jan 15, 2022
We are planning to replace the original heating and cooling system in our home. Abacus was one of the providers we reached out to for a price estimate. Henry called with an estimated time of arrival and gather some basic information to help prepare for the assessment. He was on time, knowledgeable and efficient. Henry took the time to explain the ducting work and checked breaker panel. And provided the estimate before leaving.
Cyndi Irby Dunlop
Jan 11, 2022
Brett Simmons was a wonder technician. Very knowledgeable and courteous. Would definitely ask for him again if we ever have any problems!
Kurt Schamburg
Dec 30, 2021
Technician was on time and very professional. He showed me exactly what was wrong and gave me five possible solutions at various prices to choose. We discussed them all and came up with the best solution for my problem. After his explanations, I felt very confident in my choice. He fixed it quickly to my satisfaction. He went over proper maintenance and explained the warranty. I will be using Abacus for all my future plumbing needs!
Patricia Jacome
Dec 26, 2021
Daniel Luke fixed the gas hook-up to our fire place logs in short order. We are happy to have had a professional find the issue and fix it so we can be confident with our new gas fireplace and enjoy it.no worries. Daniel was on time, polite, wore a mask and put covers on over his shoes which shows the attention to detail of this company and Daniel.
Deborah Wysocki
Dec 19, 2021
He did the fall inspection of my furnace. I'm 5 minutes he was done. I asked hi if he was done so quickly, he said yes that the furnace only takes 5-10 min. I'm not sure if he did inspect/ service my furnace. I know he was in my attic because he left a lot of grass and debris near the attic door. I have been trying to schedule this service for 5 months for just 5 min. Abacus wanted to cancel this service again today but they decided to keep the appointment after I said I would use someone else
Judy Spencer
Dec 16, 2021
I had an issue with power going out in most of my house on the morning of New Year's Eve. Since I wasn't sure about how extensive the issue was, I powered down my electric panel. At first the service agent didn't think they could fit me in until after 6, since I was desperate especially on a Friday holiday, I accepted the appointment. They ended up coming out 30 minutes later and had two other electricians come out and replace the panel.

They were able to offer a financing plan that made the payment more affordable. They installed my new panel and explained all the issues in detail. I think they did a great job.