No. CS3 is owned by PremiStar (Partners Group). The local name was kept after acquisition.

Is it safe to hire CS3?

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 › CS3

Logo from its own website

Investor-owned · names its owner on its website

Who owns CS3?

The short answer

CS3 is owned by PremiStar (Partners Group). It is not an independent local business.

Quick facts

Company: CS3
Trade: HVAC / Plumbing
Serves: Businesses
Based in: Bartlett, TN · All investor-owned companies in Tennessee →
Owned by: PremiStar (Partners Group) · their site
Ownership disclosed?: Yes: the parent is named on the company’s own website (checked 2026-10-14).

What its website says about its history

“Since 1985, CS3, Inc. is an industry leader in the art of combining cutting edge control technologies with traditional contracting services in the Mechanical/HVAC and Controls industry.”

Company website, captured by script 2026-10-14 :: https://cs3.com/

What it doesn’t say

Who owns it now: PremiStar (Partners Group).

About CS3

CS3 provides HVAC / Plumbing services in Bartlett, TN. It still trades under its original local name and is owned by PremiStar (Partners Group).

What this means before you call

The name on the truck is not the owner. In investor-owned home-service groups, pricing books, the sales process and financing offers are commonly set centrally rather than by the local office. What to check before you sign →

Sources

PremiStar’s own site lists CS3: source (2026-10-14)
Partners Group's release: Partners Group sees strong growth at US HVAC portfolio companies (says it acquired PremiStar in 2021; EQS Newswire copy): source (2026-08-10)
CS3's own website (its words about its history): source (2026-10-14)
Its own website shows this logo: source (2026-10-15)

Other brands under PremiStar (Partners Group)

Colorado Mechanical Systems Building Automation Solutions Conditioned Air Design Environmental Control Solutions, Inc.Johansen & Anderson Mercury Corporation Ruyle Mechanical Services Inc.Arctic Engineering Standard Plumbing & Heating Sheet Metal Crafters Capstone Mechanical SI Mechanical LLC

See all 25 PremiStar (Partners 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 CS3 or PremiStar (Partners Group)? Verify or contest this page · How we check · Corrections policy. Page generated 2026-10-26 from Parity’s records.