Commercial Air Conditioning Repair in Las Vegas, NV
Repair, replacement and emergency service for the rooftop packaged units and split systems that cool Las Vegas offices, shops, restaurants and warehouses.
- 24/7 emergency service
- Licensed technicians
- All makes and models
Signs a commercial AC system needs service
Commercial cooling rarely fails without warning. The trouble is that the warnings show up on the roof or above the ceiling, where nobody is looking. These are the ones that reach a manager's desk:
- One zone or suite runs warm every afternoon while the rest of the building is fine.
- A unit starts and stops every few minutes, or never shuts off.
- Breakers trip or fuses blow at the unit disconnect.
- Stained ceiling tiles appear below a rooftop unit, usually from a blocked condensate drain.
- Squealing, rattling or grinding travels down through the ductwork.
- The electric bill rises with no change in hours or occupancy.
Before you call, check that the thermostat is in cooling mode with the right schedule, that the breaker is on and that the filters are not packed with dust. If a unit is icing up or tripping its breaker, leave it off. Resetting it again and again can turn a small electrical fault into a failed compressor.
Rooftop units and split systems we repair
Most commercial buildings in the valley are cooled by packaged rooftop units. The compressor, coils, fans and controls share one cabinet that sits on a roof curb, with supply and return ducts dropping through the roof. Smaller suites, server rooms and offices often use split systems, with a condensing unit outside and an air handler indoors. We service both, on all makes and models, including heat pump versions.
The repairs we see most are failed capacitors and contactors, condenser fan and blower motors, worn belts and bearings, refrigerant leaks, stuck economizer dampers, control boards, thermostats and plugged drains. Our technicians diagnose with measurements: refrigerant pressures and temperatures, motor amp draw, voltage and airflow. That matters most with refrigerant. A system does not use refrigerant up, so a low charge means a leak, and topping it off without finding the leak only buys time.
The same rooftop cabinet usually holds the heating section as well. See commercial heating for that side of the unit.
When to replace instead of repair
A well-maintained rooftop unit often lasts 15 to 20 years, and long desert cooling seasons tend to push that toward the lower end. Repair usually makes sense for a younger unit with a single failed part. Replacement deserves a hard look when:
- The compressor or a coil has failed on a unit already near the end of its life.
- The unit runs on an older refrigerant, such as R-22, that is no longer produced and is costly to obtain.
- Breakdowns have become a regular event and tenants are losing patience.
- The cabinet, drain pan or heat exchanger is rusted through.
For a replacement we check the cooling load, the existing curb, the ductwork, and the electrical and gas connections. A curb adapter often lets a new unit sit on the old curb without reworking the roof. The crane lift is set for early morning or a day you are closed, and a one-for-one swap is typically completed in a single working day per unit. Financing is available, subject to approved credit, and we can check which utility rebates are currently offered.
What Las Vegas summers do to rooftop equipment
Afternoon highs above 100°F are normal here from June through early September, and a rooftop unit sits in full sun on a surface hotter than the air. The condenser has to push the building's heat out into that. Pressures and motor currents stay high for months, which is hard on capacitors, contactors and fan motors, and it explains why they tend to quit on the hottest afternoons.
Dust makes it worse. Wind-blown desert grit packs into condenser coils and loads filters, and a dirty coil forces the compressor to work against even higher pressure. Monsoon season brings humid spells from roughly July to September. The system then has to remove moisture as well as heat, and any drain that was partly blocked announces itself as a ceiling leak.
Much of this can be headed off with coil cleaning, filter changes and electrical checks before summer. Our commercial HVAC maintenance page explains what a visit includes.
Emergency calls and scheduled repairs
We take emergency calls 24 hours a day, seven days a week. When you call 702-497-0888, it helps to have the building address, how the roof is reached, which unit or suite is affected and what it is doing. If a server room or a kitchen is overheating, say so first.
For work that can wait, we plan around your opening hours and your tenants, and we tell you what we found and what the options are before starting repairs. Property managers with several buildings can send us the details and we will arrange a walk-through.
Frequently asked questions
Still have a question? Call 702-497-0888.
Do you handle commercial AC emergencies at night and on weekends?
Yes. Emergency service is available 24 hours a day, every day of the week, for businesses in Las Vegas and nearby Clark County communities. Call 702-497-0888 and tell us what the unit is doing and how to reach the roof. If the unit is tripping its breaker or covered in ice, leave it off until a technician arrives.
How long does a commercial rooftop unit last in Las Vegas?
Often 15 to 20 years with regular maintenance, and neglected units fall short of that. Long cooling seasons, intense sun and dust are hard on compressors, coils and electrical parts. Clean coils, fresh filters and yearly electrical checks are what get a unit to the upper end of that range.
Should we repair or replace an aging rooftop unit?
It depends on the unit's age, what failed and its repair history. A single minor part on a mid-life unit is worth fixing. A failed compressor on an old unit that uses phased-out refrigerant usually is not. We lay out both options and what each involves, so you can decide with your budget and lease terms in mind.
Can repairs be done outside our business hours?
In most cases, yes. Rooftop work often does not require entering the occupied space at all, and tasks that mean shutting down cooling can usually be scheduled for early morning or after closing. Early starts also suit the work in summer, before the roof heats up. Emergencies are handled whenever they happen.
Why does our AC keep up in the morning but not in the afternoon?
The unit is short on capacity when the load peaks. Common causes are dirty condenser coils, low refrigerant from a leak, a weak capacitor or fan motor, or an economizer damper stuck open and pulling in hot outside air. On the most extreme days even a healthy unit may run nonstop and drift a degree or two, but a steady afternoon climb means something is wrong.
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Schedule service
Tell us what is going on and we will call you back to set a time. For anything urgent, the phone is fastest.
702-497-0888- 24/7 emergency service
- 3200 Kings Way, Las Vegas, NV 89102
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