Quick answerRooftop unit service in Spokane covers the three sections of a packaged RTU: the refrigeration circuit and compressors, the economizer and outside-air dampers, and the gas heat section. A technician tests each on the roof, repairs the failed part, and checks the curb and roof seal for leaks that often show up as ceiling stains below.
Updated September 2026
Three systems in one cabinet
A packaged rooftop unit combines cooling, gas heat, the supply blower and an economizer that brings in outdoor air when it is cool enough to do the cooling for free. Each section fails in its own way, and a technician who only knows residential equipment can miss the economizer and damper faults that cause half of the comfort complaints.
We carry common RTU parts such as capacitors, contactors, belts, ignitors, flame sensors and economizer actuators, so many calls are fixed on the first trip up the ladder.
Rooftop repairs we handle
RTU compressor and economizer repair
Compressor faults on rooftop units usually start with a failed capacitor, a pitted contactor, a tripped high-pressure switch from a dirty condenser coil, or low refrigerant. We test each before condemning a compressor. Economizers are the other half of the story. A stuck damper, a failed actuator or a bad enthalpy sensor either wastes free cooling or dumps freezing air into the space in winter. We test the actuator travel, the sensor readings and the minimum outside-air setting, and set the changeover point for Spokane conditions.
Curb adapter replacements
When a rooftop unit is replaced with a model that has a different footprint, a curb adapter bridges the old roof curb to the new unit without cutting the roof. Adapters also get used when an old curb has settled or rotted. We measure both units, supply a matching adapter, set it on the curb with new gaskets and flashing, and make sure the supply and return openings line up so the unit is not starved for air. A poorly sealed curb is one of the main sources of roof leaks around rooftop equipment.
Gas heat section repair
The gas heat section in a rooftop unit works like a furnace, with an inducer motor, pressure switch, ignitor or spark module, flame sensor, gas valve and heat exchanger tubes. Winter no-heat calls usually trace to one of those parts, or to an economizer stuck open that makes the heat look weak. We run the ignition sequence, test the safeties, check gas pressure and inspect the heat exchanger for cracks. A cracked heat exchanger gets the section shut down and tagged until it is repaired or the unit replaced.
Signs a rooftop unit needs service
How a rooftop service call runs
- 1
Access and safety
Roof access, fall protection and lockout set first.
- 2
Check the call
Thermostat or building controls confirmed.
- 3
Test the section
Cooling, heating or economizer sequence run.
- 4
Find the cause
Meter, gauges and visual inspection.
- 5
Quote
Price approved by you or the property manager.
- 6
Repair
Part replaced, unit run through a full cycle.
- 7
Report
Findings and unit condition sent in writing.
Rooftops across Spokane and Spokane Valley
Most of our rooftop unit calls come from the two cities that make up the metro area, Spokane and Spokane Valley, where retail strips, restaurants, clinics and light industrial buildings run on packaged units. Many of those buildings share a roof with several tenants, so we coordinate access through the property manager and label every unit we service to keep the records straight.
What affects the cost of rooftop unit service
Rooftop unit questions
Can you service units on a shared roof?
Yes. We coordinate access with the property manager and tag each unit we service.
Why is cold air coming in during winter?
Often the economizer damper is stuck open or its sensor has failed. It is a common and fixable fault.
Do you replace curb adapters?
Yes, on unit replacements and where an old curb has failed.
How old is too old for a rooftop unit?
Past about 15 to 20 years, or when a compressor or heat exchanger fails, replacement is usually the better value.
Do you work nights and weekends?
Yes. The line is answered 24/7 and commercial no-heat or no-cooling calls are dispatched.
Other commercial services we handle
Commercial Boiler and Steam Service
Answered 24/7, parts on the truck.
Commercial Boiler and Steam Service detailsCommercial HVAC Installation
Sized, quoted and permitted.
Commercial HVAC Installation in SpokaneCommercial HVAC Repair
Answered 24/7, parts on the truck.
How we handle commercial hvac repairRooftop unit down? we will get up there.
Call for rooftop unit service in Spokane, WA at any hour.
