We Saw What Was Missing.
We Built It.
Arizona workers were suffering in 115°F heat with shade tents and warm water jugs. We decided that wasn't good enough.
Freez Bros Rentals was born from a single observation — the existing solutions weren't solutions at all. We built the trailer we wished existed: climate-controlled, fully equipped, G-7483 compliant, and delivered directly to your job site. Every single time.
He once cooled a 14-man crew on a Phoenix blacktop in July — before the generator even fully spun up. OSHA inspectors have thanked him on-site. General contractors call him before they call their own foremen. He has never personally experienced heat exhaustion, but he has personally prevented it dozens of times. He doesn't chase compliance — compliance follows him. He is Derek Umphres, and he built the only thing on an Arizona job site that actually works when it's 115°F outside.
Nobody Built It.
So We Did.
Every summer, Arizona contractors scrambled to keep crews safe and stay compliant — and every summer, the same inadequate solutions failed them. Shade tents. Warm water jugs. Portable misters. None of it was enough. So Derek built the thing that was actually missing — a fully equipped, climate-controlled job site trailer that solves the heat problem and the compliance problem at the same time. Delivered to your gate. Ready to run.
The Problem No One Was Solving
Every Arizona summer, outdoor workers face 110°F+ job sites with a shade canopy and a cooler. Phoenix G-7483 mandated formal heat illness prevention plans — and most contractors were trying to comply with solutions that simply don't qualify. Tents. Misters. Portable fans. None of it meets the "actively cooled" standard.
The Trailer We Built
We built a 16ft towable climate-controlled safety trailer with everything a job site crew actually needs — 18,000 BTU mini-split, whiteboard walls, seating for 8–10, first aid station, eye wash, personal lockers, microwave, and 50A generator capability. One unit. Full compliance. Delivered to your gate.
How It Works
We tow the trailer to your job site, level it, connect power, confirm the A/C is running cold, and hand you the keys. When your rental ends, we come back and get it. No setup crew on your end. No logistics headaches. Just a cool, compliant space waiting when your crew walks in at 6am.
Where We're Going
We're expanding the fleet and the service footprint across Arizona. Construction, solar, mining, highway infrastructure, wildfire response, border operations — anywhere crews work outdoors in Arizona heat, a Freez Bros trailer belongs. This is the beginning of something much bigger.
Six Things We'll
Never Compromise On.
These aren't values we hang on a wall. They're the decisions we make every day when no one is watching.
Crew Safety First — Always
We didn't build this to check a compliance box. We built it because Arizona workers deserve a real place to recover — not a folding chair under a sun shade. Every feature in our trailer reflects that belief.
Reliability You Can Set Your Schedule To
When we say we'll be at your gate before your crew arrives — we're there. On-time delivery, proper setup, equipment that runs when it matters. Your job site can't absorb surprises. Neither can we.
Real People. Real Answers.
Family-owned means you talk to the people who built this business — not a call center reading from a script. Questions get answered. Problems get solved the same day. We're as invested in your project as you are.
Zero Compliance Gaps
Phoenix G-7483 isn't optional and we don't treat it like it is. Every single rental covers every single requirement — cooled rest area, first aid, eye wash, training space, and documentation surface. One unit, zero gaps.
Built for the Actual Job Site
Remote desert solar fields. Mountain highway corridors. Urban construction zones. Our trailers go where your crew goes. Generator-ready, towable with any half-ton, and engineered for the conditions Arizona actually throws at you.
Arizona Through & Through
We're not a national chain parachuted into Phoenix. We live here. We built this here. When you call Freez Bros, you're talking to someone who knows exactly what 115°F on a job site in July feels like — and why it matters.
Arizona Heat
Isn't Uncomfortable.
It's Dangerous.
The Phoenix metro regularly records the highest outdoor worker heat illness rates in the country. Heat illness is the #1 preventable cause of death in construction nationally — and Arizona's dry, relentless summers push that risk further than almost anywhere else on earth. The existing solutions — shade canopies, coolers, misters — were not designed for 115°F ambient temperatures. Our trailers drop interior temperatures by 40°F or more within minutes of powering up. That's not a comfort upgrade. That's a life safety system. We built it because no one else was willing to.
Your Crew Deserves Better Than a Shade Tent.
Limited units available this summer. Arizona heat season books fast — don't wait until peak temperatures arrive and availability is gone.