Is Abacus family owned?

No. Abacus is owned by Wrench Group, a private-equity-backed home services rollup (Leonard Green & Partners / TSG Consumer Partners / Oak Hill Capital). The local name was kept after acquisition.

Is it safe to hire Abacus?

Ownership doesn't determine the quality of the technician. It does determine the sales process. Ask for a written quote, decline same-day pressure, and compare with a verified independent.

Parity › Who owns it › Abacus

Logo from its own website

On the record · owner not named on its home or about page

Who owns Abacus?

Q: Who owns Abacus?

Wrench Group, backed by Leonard Green & Partners / TSG Consumer Partners / Oak Hill Capital. Acquisitions: 2016.

The short answer

Abacus is owned by Wrench Group, a private-equity rollup backed by Leonard Green & Partners / TSG Consumer Partners / Oak Hill Capital. It is not an independent local business.

Acquisitions: 2016 · 29 brands under this parent

Quick facts

Company: Abacus
Trade: HVAC / Plumbing / Electrical
Based in: Houston & Austin TX · All investor-owned companies in Texas → Also: Sugar Land, TX · Houston, TX
Owned by: Wrench Group · their site
Backed by: Leonard Green & Partners / TSG Consumer Partners / Oak Hill Capital
Acquired: 2016
Ownership disclosed?: No: we found no mention of Wrench Group on the company’s home or about pages when we checked on 2026-09-14.

What its website says about its history

“Abacus has provided quality plumbing , air conditioning, heating, and electrical services to homeowners throughout the Houston metro areas since 2003.”

Company website, captured by script 2026-10-11 :: https://www.abacusplumbing.net/about-us/

What it doesn’t say

Who has owned it since 2016: Wrench Group, which acquired it in 2016.

About Abacus

Abacus provides HVAC / Plumbing / Electrical services in Houston & Austin TX. It still trades under its original local name and is owned by Wrench Group, a private-equity-backed home-services group (Leonard Green & Partners / TSG Consumer Partners / Oak Hill Capital).

What this means before you call

The name on the truck is not the owner. In investor-owned home-service groups, the price book, the sales process and the financing offers are usually set centrally, not at the local office. What to check before you sign →

Sources

Investcorp announces sale of The Wrench Group to Leonard Green: source (2019-04-08)
TSG Consumer Partners & Oak Hill partner with Leonard Green: source (2022)
Wrench Group brand list (24 brands): source (2026-09)
Wrench Group Our Story: source (2026-09)
Coolray About Us (no parent disclosed): source (2026-09)
Parker & Sons About Us (no parent disclosed): source (2026-09)
Abacus's own website (its words about its history): source (2026-10-11)
Its own website shows this logo: source (2026-10-15)
Its own site lists 2 offices, also in Sugar Land, TX, Houston, TX: source (2026-10-26)

Other brands under Wrench Group

Buckeye Thomas & Galbraith Jarboe's Ragsdale Coolray Baker Brothers Berkeys CoolToday Plumbline Services NexGen Air Conditioning & Plumbing Parker & Sons Comfort Wave

See all 29 Wrench Group brands →

Parity is an editorial publication. Ownership facts are sourced from public filings and company-published material; we make no claim about the quality of any individual technician. Represent Abacus or Wrench Group? Verify or contest this page · How we check · Corrections policy. Page generated 2026-10-26 from Parity’s records · parent record verified September 2026.