Open to opportunities

Randall Rentz

@randallrentz

Message

I manage HVAC and wireless infrastructure projects that improve reliability, compliance, and client satisfaction.

United States

Message

What I'm looking for

I'm looking to lead HVAC, critical-infrastructure, or wireless projects where I can improve operational reliability, manage budgets and timelines, and coordinate teams to deliver strong client outcomes.

I've managed HVAC maintenance and critical-infrastructure projects for Liberty Mechanical, including commissioning data-center HVAC systems in Las Vegas and Atlanta. I also oversee preventative maintenance supporting 8,000 AT&T cell sites.

Previously at Mastec, I led preventative maintenance operations for 12,000 AT&T cell sites and coordinated telecommunications infrastructure installations, budgets, resources, and cross-functional delivery teams.

At Connectivity Wireless, I managed projects and estimates from bid evaluation through post-project review. I monitored costs against budgets, developed detailed project cost and timeline breakdowns, and supported sales presentations.

My background also includes account management, supplier coordination, purchase orders, contract negotiation, and client communication. I focus on keeping projects moving smoothly, resolving issues early, and delivering reliable results within budget and timeline expectations.

Experience

Work history, roles, and key accomplishments

Current

Project Manager-HVAC Maintenance/Critical Infrastructure

Current

Liberty Mechanical

Jul 2025 - Present (1 year 1 month)

Commissioned HVAC systems for critical infrastructure in data centers, enhancing environmental control and system performance. Managed preventative maintenance program for 8,000 AT&T cell sites, ensuring operational reliability and compliance.

HVAC Critical Infrastructure Preventive Maintenance Programs Project Management Budget Management Stakeholder Communication