Compressor Failure
A failed or failing compressor is one of the most common reasons an RTU stops cooling — electrical, mechanical and refrigerant-related causes all need to be ruled out.
Commercial HVAC
Rooftop UnitDown or Underperforming?
Repair It Guys repairs commercial rooftop units and package RTUs throughout Tyler, Longview and East Texas — compressors, condenser fans, refrigerant leaks, controls and weatherproofing.
Rooftop Unit / RTU Repair
One Unit.Your Whole Building.
A rooftop unit carries the full heating and cooling load for the space below it, and it takes the weather with it — we diagnose accordingly.
We inspect the unit, the electrical and refrigeration systems, and the roof curb before recommending a repair.
Compressor • Controls • Weatherproofing
Rooftop package unit diagnosis and repair.
Common Problems
Signs Your RTUNeeds Attention.
Condenser Fan Motor Problems
A weak, seized or failed condenser fan motor restricts the unit's ability to reject heat, which can trip safety controls or shut the unit down.
Refrigerant Leaks
Rooftop exposure to weather, vibration and temperature swings can contribute to refrigerant leaks over time, which show up as reduced cooling capacity.
Economizer & Damper Issues
A stuck or miscalibrated economizer damper can pull in too much or too little outside air, affecting comfort and efficiency.
Belt-Drive Blower Wear
Worn belts, pulleys or bearings on belt-drive blower systems cause noise, vibration and reduced airflow if left unaddressed.
Roof Curb & Weatherproofing
A rooftop unit that isn't properly sealed to its curb can let water into the building or the unit itself — worth checking alongside any mechanical repair.
Our Process
Diagnose First.Repair With Confidence.
Access & Inspect
We access the rooftop equipment safely and inspect the unit, curb, controls and electrical components.
Test
We test refrigerant pressures, electrical components and airflow to identify the actual cause of the failure.
Explain
We explain what's failing, what the repair involves, and flag anything else worth knowing — including the curb and weatherproofing.
Repair & Verify
After approved repairs, we run the unit through a full cycle and confirm it's operating correctly.
Real Repair It Guys Work
See A RelatedService Project.
View real equipment, field photos and confirmed work from a related Repair It Guys service call.
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Keep Your Building Comfortable.
Call Repair It Guys for rooftop unit diagnosis and repair throughout Tyler, Longview and East Texas.
Frequently Asked Questions
Rooftop Unit Questions
Straightforward answers for business owners, property managers and facility staff.
A rooftop unit, or RTU, is a self-contained packaged HVAC system mounted on the roof that provides both heating and cooling for the space below — common in restaurants, retail stores and other commercial buildings.
Common causes include a failed compressor, a weak condenser fan motor, low refrigerant from a leak, an electrical fault, or a control/economizer problem. Testing is needed to identify the actual cause.
Both matter. A mechanically sound unit sitting on a poorly sealed curb can still cause water intrusion, so we flag weatherproofing concerns we notice even when they're separate from the mechanical repair.
Yes. Many commercial buildings run several RTUs serving different zones — we can inspect and service multiple units in one visit.
Yes. When a unit's age, condition or repair cost make replacement the better option, we'll explain why and what replacement involves.