About J. M. Gross Engineering, LLC
J. M. Gross Engineering, LLC is a specialized consulting engineering firm focused on mechanical, electrical, and plumbing (MEP) infrastructure for mission‑critical facilities such as data centers, central plants, control buildings, and shelter‑in‑place facilities. The company provides engineering design, infrastructure master planning, facility assessments, and commissioning services, with particular expertise in liquid‑cooled data centers and complex electrical power system studies. Their work emphasizes reliability, resilience, and energy efficiency for clients who cannot afford downtime in core operations.
A charge from “CO: GROSS ENGINEERIN” on a card statement is likely related to professional engineering services billed by J. M. Gross Engineering, LLC—this could include design work for a project, consulting or assessment services, commissioning activities, or progress billing under a larger engineering or construction contract. In some cases, the descriptor may appear shortened or truncated (e.g., “GROSS ENGINEERIN”) due to card processing character limits, and “CO:” may be a shorthand from the processor for “company” or internal coding rather than part of the firm’s brand name.
To verify a charge, customers should review project contracts, proposals, or invoices from J. M. Gross Engineering and match the billed amount and date to work completed or milestones reached. Project contacts will typically include a principal or project manager at the firm along with their email and phone number, which can be used for clarification. If questions remain, cardholders should contact J. M. Gross Engineering directly using the contact details on their official website, and, if necessary, follow up with their bank or card issuer to dispute unrecognized charges, providing supporting documentation such as contracts, purchase orders, or email correspondence.