• 281-817-0175
  • Year Established: 2003
  • Homeowners Served: 40,000+
  • Number of Employees: 200
  • License Number(s): TECL 30557
"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
We stand behind every Five Star Rated company with Our Guarantee. We've done the research for you and identified the best home service pros in your neighborhood.
Homeowner Reviews

“They were all good at what they did. They made it look easy, and they were fast and did a great job.”

“Overall, I am very happy with Abacus Plumbing, Air Conditioning & Electrical's work.”

“The replacement and upgrade of my electrical panel was a genuine piece of art.”

“The quality of the product and the warranty met my expectations.”

“They have done a very good job for me.”

  • 281-817-0175
  • Year Established: 2003
  • Homeowners Served: 40,000+
  • Number of Employees: 200
  • License Number(s): TECL 30557
"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
Electrical; air conditioning and heating repairs and installation; air and water filtration systems; plumbing repairs and installation; water heaters (tank and tankless); drain, pipe, and sewer repairs and installation
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)