• 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, AC 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 thru superior customer service.' Our Motto: You can count on us!"

Alan O'Neill, President
Principal Owners / Key Managers
Alan O'Neill, 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

“Abacus has done great work for us in plumbing, A/C, and now electrical! Highly recommend their services.”

“I was impressed with the service, quality of work was very good, the commitment to getting the job done was exceptional.”

“Service tech was knowledgeable and worked rapidly to complete the job over a two-day period.”

“The guys did a great job replacing outlets and wall switches. I would hire again.”

  • 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, AC 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 thru superior customer service.' Our Motto: You can count on us!"

Alan O'Neill, President
Principal Owners / Key Managers
Alan O'Neill, 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 & Heating Repairs; Air Conditioning & Heating Installation; Air & Water Filtration Systems; Plumbing Repairs & Installation; Water Heaters (Tank & Tankless); Drain, Pipe & Sewer Repairs & Installation
Insurance
General Liability & Workers' Compensation
Warranties / Guarantees
Up to 2-Years on Repairs for Members
Up to 10-Years on HVAC Equipment & 15 Years on Water Heaters
Up to 10-Years on Sewer Replacement
100% Customer Satisfaction Guarantee
Recognitions
Service Awards in Plumbing & Air Conditioning
BBB Awards: 2006, 2007, 2008, 2009*, 2010, 2011, 2014*, 2016*, 2017, 2018*, and 2019* (*Pinnacle Award Recipient)