In the desert Southwest, summer is not just a season. It is a stress test. Outdoor temperatures well above 110 degrees are routine in places like Las Vegas, Laughlin and Barstow, and the heat does not stay outside. It creeps into rooftop enclosures, unventilated closets, equipment cabinets and utility rooms, where the gear that keeps businesses connected quietly works harder every afternoon.
Most network outages people remember are dramatic: a fiber cut, a lightning strike, a flood. Heat-related failures are less visible. A switch reboots on a hot afternoon. A battery that looked fine in April cannot hold a load in July. A router throttles itself to avoid overheating, and the office blames the internet provider.
Doug Roberts, chief technology officer of Cytranet, a Las Vegas-based business-only carrier, has spent years designing networks for this climate. “Heat is patient,” he said. “It rarely breaks something all at once. It wears equipment down, shortens battery life and finds the weakest closet in the building. Planning for it is a big part of building networks in the desert.”
Where the heat hides
Office spaces are cooled for people, not for equipment. The network closet is often an afterthought: a small room or cabinet with no dedicated cooling, a door that stays closed, and a growing pile of devices generating their own heat. When the building’s main system cycles down in the evening or on weekends, temperatures in those rooms can climb quickly.
Outdoor equipment has it tougher. Wireless radios, cabinets and enclosures sit in direct sun, and surfaces exposed to afternoon light can get far hotter than the air temperature suggests. Gear rated for outdoor use still benefits from shading, ventilation and thoughtful placement.
“We walk into a lot of closets that feel like ovens,” Roberts said. “The equipment is often still running, but it is running close to its limits. A small investment in airflow or cooling can add years to that gear and prevent the kind of mystery outages that are hard to diagnose.”
Cooling the equipment, not just the room
A few practical steps go a long way:
- Give network closets dedicated cooling or at least active ventilation that runs around the clock.
- Keep equipment off the floor and away from exterior walls that absorb sun.
- Leave space around devices for airflow and manage cabling so it does not block vents. Clean structured cabling helps here as much as it helps troubleshooting.
- Install a simple temperature sensor that sends alerts before things get dangerous.
- Shade outdoor enclosures and choose equipment rated for the local climate.
For businesses whose servers and core systems have outgrown a closet, moving them into a purpose-built facility is often the cleanest fix. Colocation and data center space provide engineered cooling, redundant power and physical security that are difficult and expensive to replicate in an office.
Batteries hate heat
Battery backup units are the unsung heroes of network uptime. They carry equipment through brief power blips and give generators time to start. But batteries are sensitive to temperature. Heat speeds up chemical aging, which means a battery kept in a hot closet may lose capacity much sooner than its rated lifespan suggests.
Roberts recommends treating batteries as consumables that need regular attention. “People install a backup unit and forget about it for five years,” he said. “In the desert, that is a gamble. We like to see batteries tested on a schedule and replaced before summer, not after they fail during the first outage of July.”
Useful habits include logging install dates, running periodic self-tests, checking runtime estimates against actual load, and placing battery units in the coolest practical location.
Power planning for the peak season
Summer also brings a higher chance of power disruptions as the grid serves heavy cooling demand, along with monsoon storms that can knock out lines. Cytranet has a separate guide on keeping communications running during summer power outages. From the equipment side, the key questions are how long network gear can run on battery, whether a generator covers the network closet, and whether cloud phone service can reroute calls to mobile devices if the office goes dark.
“Resilience is a stack of small decisions,” Roberts said. “Batteries sized correctly, cooling that works when the building is empty, a backup internet path and phones that can follow people. Each piece is simple. Together they keep a business open on the worst afternoon of the year.”
Wireless links and weather
Fixed wireless connections are well suited to the region, and heat on its own is rarely a problem for a properly engineered link. Mounting hardware, cable connectors and enclosures still deserve a seasonal check, since expansion, contraction and UV exposure take a toll over time. For readers curious about how conditions affect wireless service more broadly, Cytranet has covered whether weather affects wireless internet.
A pre-summer checklist
Before temperatures peak, it is worth a quick walk-through:
- Check closet temperatures in the late afternoon, not the morning.
- Test battery runtime and replace aging units.
- Confirm generator coverage includes network equipment.
- Inspect outdoor enclosures, seals and mounting hardware.
- Verify failover for internet and voice.
- Make sure you know who to call, at any hour, if something goes wrong.
Cytranet offers 24/7 support along with managed IT, colocation and connectivity services across the Southwest. For Roberts, desert summers are simply part of the job. “We build for the climate we live in,” he said. “When a customer makes it through August without thinking about their network once, that is exactly the result we are aiming for.”
