Dependable HVAC

Commercial HVAC Repair - Rooftop Units, Commercial AC & VRF

Your building is losing money every hour it's uncomfortable. We diagnose on the roof, document what we find, and fix it.

Licensed #36703
5.0 Stars (Over 100 Reviews)
24/7 Emergency Service
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(336) 318-5876

Available Now - Call for Immediate Service

Commercial Unit Down? Call the Mechanical Line

Tell us the business type and equipment - restaurants, medical, and retail get prioritized.

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(336) 318-5876Same-day commercial diagnostics • Mechanical contractor #36703

Quick Answer:

Dependable HVAC repairs commercial rooftop units, commercial AC split systems, VRF, and packaged heat pumps across the Charlotte metro - Charlotte, Matthews, Monroe, Indian Trail, Concord and Harrisburg - plus Stanly and Montgomery County, NC, usually same day. Licensed mechanical contractor #36703. Call (336) 318-5876 and describe the unit and the symptom.

What's Actually Wrong With Your Commercial Unit?

Commercial equipment fails in patterns. Here's what your symptom usually means before we ever get on the roof - and what we'll be metering when we do.

Rooftop unit runs but blows warm

Failed contactor or capacitor, low charge from a coil leak, or a locked-rotor compressor. On gas/electric RTUs a tripped high-pressure switch from a filthy condenser coil is the most common culprit.

One zone hot, the rest fine

On multi-RTU or VRF buildings this is almost always a single unit or branch controller - not the whole system. We isolate the zone instead of quoting a building-wide fix.

Breaker trips when cooling starts

Shorted compressor windings, a grounded condenser fan motor, or an undersized/aged disconnect. We meter before we reset - repeatedly resetting a breaker on a shorted compressor destroys more than it saves.

Water staining the ceiling tiles

Plugged condensate trap or pan on a rooftop or ceiling-hung unit. Cheap to clear, expensive to ignore.

Kitchen won't cool during service

Make-up air and hood exhaust out of balance, pulling conditioned air straight out of the building. It's an airflow problem, not a cooling capacity problem.

No heat from the packaged unit

Ignition control, flame sensor, gas valve, or a cracked heat exchanger on gas heat sections - we test and document before condemning equipment.

How a Commercial Repair Call Runs

  1. 1

    You describe the building, the equipment, and the symptom. We bring the right parts for that class of unit.

  2. 2

    We meter the unit on site - electrical, refrigerant pressures, airflow, and controls - instead of guessing from the thermostat.

  3. 3

    You get photos and readings from the roof, plus a repair price before any work starts.

  4. 4

    We repair it, verify operation under load, and tell you what else on that unit is drifting toward failure.

Equipment We Repair as a Mechanical Contractor

Several commercial rooftop units on a flat roof diagnosed and repaired by Dependable HVAC
Packaged rooftop units (gas/electric and heat pump)
Commercial split systems with indoor air handlers
VRF / VRV systems and branch controllers
Ductless mini-split banks in offices and server rooms
Commercial condensers, compressors, and coils
Economizers, controls, and thermostat/BMS interfaces

Commercial Repair Coverage - Charlotte Metro to the County Line

A down rooftop unit costs a business money by the hour, so our commercial trucks run a much wider radius than our residential ones. We take commercial AC and rooftop repair calls throughout Charlotte, Matthews, Mint Hill, Pineville, Monroe, Indian Trail, Waxhaw, Concord, Harrisburg, Kannapolis, Midland and Salisbury - and we're the local shop for Albemarle, Locust, Oakboro, Norwood, Mount Gilead and Troy.

Charlotte Metro

  • Charlotte, NC
  • Matthews, NC
  • Mint Hill, NC
  • Pineville, NC
  • Stallings, NC

Cabarrus & Rowan County

  • Concord, NC
  • Harrisburg, NC
  • Kannapolis, NC
  • Midland, NC
  • China Grove, NC
  • Salisbury, NC

Union County

  • Monroe, NC
  • Indian Trail, NC
  • Waxhaw, NC
  • Wingate, NC
  • Marshville, NC

Home Territory (Stanly & Montgomery)

  • Albemarle, NC
  • Locust, NC
  • Oakboro, NC
  • Norwood, NC
  • Badin, NC
  • Mount Gilead, NC
  • Troy, NC
  • Biscoe, NC

Not on the list but running commercial equipment nearby? Call it in - if it's a rooftop unit, VRF bank, or commercial split, we'll tell you straight whether we can get a tech to you.

Commercial Repair Questions

Do you repair commercial rooftop units?

Yes - rooftop units are the majority of our commercial repair work. We service 3–25 ton packaged gas/electric and heat pump RTUs from all major manufacturers, including compressor, condenser fan motor, blower, belt, board, economizer, and refrigerant repairs.

How quickly can you get to a commercial no-cooling call?

Commercial no-cooling calls in Stanly and Montgomery County are typically handled same day, and we dispatch into the Charlotte metro - Charlotte, Matthews, Mint Hill, Monroe, Indian Trail, Concord and Harrisburg - on a scheduled or next-available basis. Tell us the business type when you call: a restaurant losing walk-in comfort or a medical office with temperature-sensitive rooms gets moved up the board.

Do you service commercial buildings in Charlotte and the surrounding metro?

Yes. Our residential work stays close to home, but commercial and mechanical contracting work travels. We repair rooftop units, commercial AC, and VRF systems in Charlotte, Matthews, Mint Hill, Pineville, Monroe, Indian Trail, Waxhaw, Concord, Harrisburg, Kannapolis, Midland and Salisbury, in addition to our Stanly and Montgomery County home territory.

Can you repair commercial split systems and VRF, not just rooftop units?

Yes. As a mechanical contractor we work commercial split systems with indoor air handlers, VRF/VRV systems with multiple indoor heads and branch controllers, packaged heat pumps, and ductless banks serving server rooms and back offices.

Will you tell me when repair stops making sense?

We give you the honest number. If a 14-year-old RTU needs a compressor and a coil, we'll price the repair and the replacement side by side so you can make a capital decision instead of feeding money to a unit that's finished.

Our Service Area

Serving Mount Gilead and surrounding communities with expert HVAC services

Call Now

(336) 318-5876