Verified Nov 2026
Thermal & Fluid Systems
·
Wilmington, Massachusetts
·
Since 2020
Kelvin Group is a mechanical services company headquartered in Wilmington, Massachusetts, United States, founded in 2020 and reporting an estimated 200-500 employees and a $100-250M revenue band. It is privately held and operates as a family of brands, including ARC Mechanical, RD&S, and HCG Associates. Its core capability is thermal and fluid systems, serving automotive, electric-vehicle, construction, medical, renewable-energy, and industrial-equipment sectors. In May 2026 the company announced the acquisition of PermaCold Engineering, extending its industrial refrigeration platform into the Pacific Northwest.
Kelvin Group at a glance
Revenue
$100-250M
Est. band
Employees
200-500
Founded
2020
Headquarters
Wilmington, Massachusetts
Industries
Automotive
Electric Vehicles
Construction
Medical
Renewable Energy
Industrial Equipment
Overview
Kelvin Group is a mechanical services company headquartered in Wilmington, Massachusetts, United States, founded in 2020 and reporting an estimated 200-500 employees and a $100-250M revenue band. It is privately held and operates as a family of brands, including ARC Mechanical, RD&S, and HCG Associates. Its core capability is thermal and fluid systems, serving automotive, electric-vehicle, construction, medical, renewable-energy, and industrial-equipment sectors. In May 2026 the company announced the acquisition of PermaCold Engineering, extending its industrial refrigeration platform into the Pacific Northwest.
At a glance
Attribute | Detail |
|---|---|
Founded | 2020 |
Headquarters | Wilmington, Massachusetts |
Employees | 200-500 |
Revenue | $100-250M (estimated) |
Primary capability | Thermal & Fluid Systems |
What Kelvin Group makes
The company's listed products include pumps, and its services cover industrial and commercial refrigeration, HVAC, process safety management, environmental compliance, and non-destructive testing.
Products and capabilities described on the company's own site include Pump (source: kelvin.cool).
Latest developments
2026-10-27 — Metric places Vice President of Enterprise Supply Chain at Kelvin Group | Metric (metric-search.com)
2026-06-02 — How Kelvin Group has redefined the American refrigeration contracting market by putting people first (construction-today.com)
2026-05-15 — Kelvin Group Acquires PermaCold Engineering — Industrial Refrigeration Platform Reaches the Pacific Northwest (thehardwirenews.com)
2026-05-12 — Kelvin Group Announces ARC Mechanical’s Acquisition of Mullally Bros Inc. to Expand Geographic Footprint Throughout the New England and Upstate New York Regions - Kelvin Group (kelvin.cool)
2026-03-12 — Heading to IIAR 2026 in San Antonio next week? Come see us at Booth | Kelvin Group (linkedin.com)
2026-01-07 — Kelvin Group Expands Coast-to-Coast with Acquisition of PermaCold Engineering, Inc. - Kelvin Group (kelvin.cool)
Company details
Kelvin Group reports an estimated revenue band of $100-250M and operates as a private company, with no publicly traded ticker. Kelvin Group was founded in 2020, has an estimated 200-500 employees, and is headquartered in Wilmington, Massachusetts.
Frequently asked questions
What does Kelvin Group make?
Kelvin Group is a mechanical services company headquartered in Wilmington, Massachusetts, United States, founded in 2020 and reporting an estimated 200-500 employees and a $100-250M revenue band. It is privately held and operates as a family of brands, including ARC Mechanical, RD&S, and HCG Associates. Its core capability is thermal and fluid systems, serving automotive, electric-vehicle, construction, medical, renewable-energy, and industrial-equipment sectors. In May 2026 the company announced the acquisition of PermaCold Engineering, extending its industrial refrigeration platform into the Pacific Northwest.
Where is Kelvin Group headquartered?
Kelvin Group is headquartered in Wilmington, Massachusetts (500 Research Dr, Wilmington, Massachusetts, 01887-4400).
When was Kelvin Group founded?
Kelvin Group was founded in 2020.
How big is Kelvin Group?
Kelvin Group has an estimated 200-500 employees, with revenue in the $100-250M range (estimated).
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Last verified Nov 2026. Is this your company? Request a correction.
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