Check controls first
Confirm thermostats, schedules and the building management system are calling for cooling.
Commercial building losing cooling?
When cooling fails in an office, store, restaurant or facility, tenants, customers, inventory and equipment are affected. Call 833-877-1717 with the address and what is down. RepairNowUSA connects the request. An independent commercial HVAC provider does the work.
Am I in the right place?Yes for rooftop units, split systems or chillers not cooling, multiple zones hot, or equipment rooms overheating.
Is this urgent?Yes when occupants, server or equipment rooms, food or medicine are at risk. If anyone shows signs of heat illness, such as confusion, dizziness, nausea, or hot dry skin, call 911 and move them somewhere cool.
What do I do next?Call 833-877-1717 with the ZIP code, building type, and which units or zones are affected.
Rooftop units: RTU repair. Whole HVAC system: commercial HVAC repair. Refrigeration: commercial refrigeration.
RepairNowUSA editorial review · Last substantively reviewed October 14, 2026 · Review standards
Before the technician arrives
Protect critical spaces
Move or shut down heat-sensitive equipment where possible. Server rooms may need temporary cooling.
Keep staff off the roof
Do not send staff onto roofs or into mechanical rooms to troubleshoot.
Roof and electrical safety
Do not send staff onto roofs or into mechanical rooms to troubleshoot. Rooftop equipment involves fall hazards and high voltage.
Common commercial cooling failures
Rooftop unit failure
Most small commercial buildings are cooled by rooftop units. See rooftop unit repair.
Split system failure
Offices and retail spaces may use split systems with outdoor condensing units and indoor air handlers.
Chiller problems
Larger buildings use chillers, which need specialized technicians.
Server and equipment rooms
Dedicated cooling for IT rooms is critical. Equipment can overheat quickly when it fails.
What to have ready when you call
- Property ZIP code and building type
- System type: rooftop units, split systems or chiller
- Zones affected and symptoms
- Any critical spaces like server rooms
- Roof or mechanical room access and an on-site contact
- Who can authorize work and any vendor requirements, such as a COI
How commercial AC repair usually works
- Diagnosis. The technician checks controls, power, compressors, fans and refrigerant circuits.
- Repair. Failed capacitors, contactors, motors and belts are replaced, often the same visit.
- Refrigerant work. Leaks are found and repaired by certified technicians before recharging.
- Temporary cooling. Portable units may cool critical spaces while major parts are ordered.
Walk-in coolers and display cases are refrigeration, a separate trade from building AC. Mention them separately when you call.
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles commercial AC repair in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Commercial AC questions
Do providers handle multi-site properties?
RepairNowUSA can take requests for different sites. Coverage depends on each location’s ZIP code.
Does RepairNowUSA guarantee response times for businesses?
No. RepairNowUSA connects you with a participating independent provider when one is available.
Do providers work on commercial brands?
Many commercial technicians service major brands. Share the brand and model when you call.
What should we do about the server room?
Shut down non-essential equipment, open doors if safe and consider portable cooling. Tell the provider it is critical.
Can I call for commercial AC repair at night?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.