Abacus Plumbing, Air Conditioning & Electrical: Full Review (Backed by Data)

At a Glance: Abacus Plumbing, Air Conditioning & Electrical

License and Legitimacy: Is Abacus Plumbing, Air Conditioning & Electrical Legit?

Yes, by the records. Abacus Plumbing, Air Conditioning & Electrical holds Texas electrical contractor license EC-30557, issued to ABACUS PLUMBING, AC, AND ELECTRICAL, status Active, expiring December 28, 2026. The license was originally issued October 29, 2014, in Harris County. The master electrician of record is ASHLEY, STEVEN MATTHEW (license 782729, expiring December 22, 2026). Best In MoCo verified this by direct lookup in TDLR's LicenseSearch on October 12, 2026. An Active status means the company is legally authorized to perform electrical work in Texas.

Three record details are worth knowing before you hire, stated here as plain facts. First, the license was not independently verified at the time of the original scoring, which is why Professional Verification scored 0 out of 5. This guide's direct TDLR lookup now confirms Active status through December 2026, so that verification gap is closed.

Second, the master electrician's own license expires December 22, 2026, six days before the contractor license's December 28, 2026 expiry. Texas requires the master of record to hold a current license, so both records are worth rechecking yourself before you hire, especially for work scheduled after December 2026.

Third, the founder named in the company's own materials is Alan O'Neill, a Texas Master Plumber (M-20628), not the master electrician of record. Abacus started as a plumbing company in 2003, added air conditioning and heating in February 2012, and added electrical services in September 2014. The electrical trade is the newest of the three under the Abacus roof, and the master electrician of record on the state license is Steven Matthew Ashley. As with any contractor, TDLR records change over time. Recheck the license yourself before hiring.

What Abacus Plumbing, Air Conditioning & Electrical Does

The following comes only from the company's own website, abacusplumbing.net, which Best In MoCo confirmed live on October 12, 2026. Abacus is a multi-trade home-services company, not an electrician-only shop. Its three trades break down as follows.

Plumbing: drains, sewers, water lines, toilets, water heaters, plus rooter and hydro jetting services. Air conditioning and heating: new system installation, routine maintenance, emergency repairs, furnaces, air conditioning units, and duct cleaning and ventilation services. Electrical: installations, maintenance and upgrades, electrical panels, ceiling fans, light fixtures, plus home inspections and troubleshooting for electrical performance.

The company advertises a consistent set of promises: up-front pricing, availability 24 hours a day and 7 days a week including holidays, emergency service, licensed and insured technicians, free estimates, and a 100 percent satisfaction guarantee. The Yelp specialties line, written by the owner, adds Generac standby generators, whole-house generators, electric panel repair and installation, and lighting installation to the electrical side.

One plain fact about coverage: the company is headquartered in Houston at 4001 Kendrick Plaza Drive, with additional locations in Sugar Land and Austin. The Oak Ridge North ranking covers electricians serving the Oak Ridge North area. None of the three published Oak Ridge North finalists is based inside Oak Ridge North city limits; Oak Ridge North is a small city, and most contractors serving it operate from nearby towns. Oak Ridge North homeowners should confirm coverage for their address when they call.

What the Review Data Shows

The review record for Abacus splits across two very different platforms, and both numbers are stated here as facts. Google carries 4.8 stars across 4,121 reviews at research time, the largest review base of any Oak Ridge North finalist by a wide margin. Yelp carries 2.0 stars across 560 reviews on a page claimed by the owner. Best In MoCo did not investigate the causes of the gap. The gap itself is the finding, and a homeowner deciding whether to call should read both platforms directly.

The Google-based research counted 2,134 review-topic mentions:

Two data patterns stand out. First, the knowledge-and-communication cluster: knowledgeable staff, knowledgeable tech, clear explanations, and problem explanation account for 1,643 of the 2,134 mentions. That reads as a shop customers call when they want the work explained before it is done, which lines up with the diagnostic, options-presenting approach of a large multi-trade company. Second, the thoroughness-and-options cluster: thoroughness and repair options account for 207 mentions, matching the full-inspection style the company advertises. These are aggregate mention counts from the Google-based research, not individual review quotes.

The sentiment scoring on the review data produced the Attribute Sentiment score of 10.6 out of 15, the lowest of the three Oak Ridge North finalists. Customer Satisfaction scored 19.2 out of 20 on the 4.8-star Google rating.

BBB Record

Abacus Plumbing, Air Conditioning & Electrical holds a BBB rating of A+ and is BBB accredited. Two BBB profiles exist. The Houston profile is accredited since 2003, per research. The Austin profile, covering the Austin location at 2106 Denton Dr, shows accreditation since March 12, 2021, with the BBB file opened March 10, 2021, the business started January 31, 2012, and organized as a limited liability company. The complaint count was not exposed on the profiles checked, so no complaint number can be stated here. That is a data limitation, not a finding. Nothing further can be stated from BBB records.

Company Background

Abacus Plumbing, Air Conditioning & Electrical has been in business for 23 years, founded in 2003. Founder Alan O'Neill started as a plumbing apprentice in Dublin, Ireland, and holds a Texas Master Plumber license (M-20628). The company added air conditioning and heating in February 2012 and electrical services in September 2014. Research identifies Abacus as part of Wrench Group, a home-services platform company.

The company is headquartered at 4001 Kendrick Plaza Dr, Houston, TX 77032. That address matches the TDLR license record, the Yelp page, and the company site. Additional locations listed on the company site: Sugar Land at 104 Industrial Blvd, and Austin at 2106 Denton Dr. The TDLR record lists phone (713) 812-7070, which matches the Yelp page and the company site. The company site footer carries the license line “ALAN O'NEILL M-20628 TACLA135747C TECL 30557.” Social profiles on file: Facebook, X (Twitter), and YouTube. Hours are listed as open 24 hours a day, 7 days a week, including holidays. Nothing here goes beyond what the records and the company's own site state.

Best Fit

Abacus Plumbing, Air Conditioning & Electrical may be worth considering if you are a homeowner in the Houston, Oak Ridge North, or surrounding areas who prefers one large company handling plumbing, HVAC, and electrical needs under a single roof, including 24/7 emergency service. The knowledge-and-explanation pattern in the review data suits customers who want options laid out and the work explained before authorizing it. Confirm Oak Ridge North coverage for your address when you call, since the company is headquartered in Houston.

How Abacus Compares in Oak Ridge North

Best In MoCo scored the Oak Ridge North-area pool. The three published finalists are Dempsey Family Electric of Texas at 90.7, Crossroad Electric at 85.0, and Abacus Plumbing, Air Conditioning & Electrical at 79.8. Abacus sits 5.2 points behind Crossroad and 10.9 points behind Dempsey.

Abacus's differentiators start with scale. Its 4,121-review Google base is the largest on the page by far, and Review Confidence scored a perfect 15 out of 15, the only perfect score in that category among the three finalists. At 23 years, Longevity scored a full 10 out of 10. It is the only multi-trade finalist, which is a genuine one-call convenience for homeowners who also need plumbing or HVAC work, and its 24/7 emergency operation is the largest-scale service model of the three. BBB A+ accreditation adds a third-party business record.

The gap to a higher score sits in sentiment, consistency, risk, verification, and local presence. Customer Satisfaction scored 19.2 out of 20 on the 4.8-star rating, below Dempsey's 19.6 and Crossroad's perfect 20. Attribute Sentiment scored 10.6 out of 15, the lowest of the three. Consistency scored 5 out of 10, reflecting records that differ across sources on addresses and phone numbers. Complaint/Risk scored 8 out of 10 rather than 10. Professional Verification scored 0 out of 5 at scoring time because the license was not independently verified then; this guide's direct TDLR lookup now confirms EC-30557 Active through December 28, 2026. Local Presence scored 2 out of 5, reflecting the Houston headquarters serving the Oak Ridge North area. And the Yelp record at 2.0 stars across 560 reviews stands in sharp contrast to the Google record, a split no other finalist on the published pages shows.

How Best In MoCo Scored Abacus Plumbing, Air Conditioning & Electrical

Frequently Asked Questions

Before You Hire Any Electrician

1. Verify the contractor's TDLR license yourself at tdlr.texas.gov before signing anything.
2. Get a written estimate that spells out labor, materials, and timeline.
3. Confirm the company carries liability insurance.
4. Check the BBB profile and read recent reviews on more than one platform before deciding.
5. For panel or generator work, confirm permitting and inspection handling up front.

Sources

The Bottom Line

Abacus Plumbing, Air Conditioning & Electrical earned a 79.8 MoCoScore on a 4.8-star Google rating across 4,121 reviews, an Active Texas license now directly verified through December 2026, BBB A+ accreditation, and 23 years as a large multi-trade home-services company. It looks like a strong fit for homeowners in the Houston, Oak Ridge North, or surrounding areas who want plumbing, HVAC, and electrical handled under one roof with 24/7 emergency service and up-front pricing. Two reminders before you hire: the Yelp record (2.0 stars across 560 reviews) tells a different story than the Google record, so read both platforms yourself; and the master electrician's own license expires December 22, 2026, six days before the contractor license, so recheck both records. For the full side-by-side comparison, see Best In MoCo's Oak Ridge North electricians ranking.