• 281-715-0379
  • Year Established: 2003
  • Homeowners Served: 40,000+
  • Number of Employees: 200
  • License Number(s): TACLB00082488E
"Abacus Plumbing, Air Conditioning & Electrical provides award-winning plumbing, A/C, and heating services to the greater Houston area. Abacus Plumbing was founded by Master Plumber, Alan O'Neill, in 2003, with one goal in mind: win lifetime customers through superior customer service. Our motto: You can count on us!"

Alan O'Neill, President & CEO
Principal Owners / Key Managers
Alan O'Neill, President & CEO
Molly McGuirk, General Manager
Tony Patino, Plumbing Operations Manager
Lance Ellison, HVAC Operations Manager
Steve Piatt, Electrical Manager
Five Star Guarantee
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Homeowner Reviews

“The tech that came out did a great job. The lady in the office that I spoke with also did a great job of working with me. They did a great job with communicating with me throughout the project.”

“Abacus Plumbing, Air Conditioning & Electrical was able to diagnose my problem and made multiple suggestions for me to solve it.”

“They were on time, efficient, and very good at communicating with me.”

“The tech that did the work did a great job and was very professional.”

  • 281-715-0379
  • Year Established: 2003
  • Homeowners Served: 40,000+
  • Number of Employees: 200
  • License Number(s): TACLB00082488E
"Abacus Plumbing, Air Conditioning & Electrical provides award-winning plumbing, A/C, and heating services to the greater Houston area. Abacus Plumbing was founded by Master Plumber, Alan O'Neill, in 2003, with one goal in mind: win lifetime customers through superior customer service. Our motto: You can count on us!"

Alan O'Neill, President & CEO
Principal Owners / Key Managers
Alan O'Neill, President & CEO
Molly McGuirk, General Manager
Tony Patino, Plumbing Operations Manager
Lance Ellison, HVAC Operations Manager
Steve Piatt, Electrical Manager
Top Company Features
  • Five Star Guarantee
  • Licensed
  • General Liability Insurance
  • Workers' Compensation Insurance
Services Offered
Air conditioning and heating repairs and installation; air and water filtration systems; plumbing repairs and installation; water heaters (tank and tankless); water filtration and purifier; drain, pipe, and sewer repairs and installation; electrical
Insurance
General Liability & Workers' Compensation
Warranties / Guarantees
Up to 2 years on repairs for members
Up to 15 years on water heaters
Up to 10 years on sewer replacement
Lifetime warranty on select systems
100% customer satisfaction guarantee
Recognitions
BBB Awards: 2006, 2007, 2008, 2009*, 2010, 2011, 2014*, 2016*, 2017, 2018*, 2019*, and 2020 (*Pinnacle Award Recipient)