Replacement & installationWestbury, NY·Central AC
R-22 to R-32 Central AC Replacement in Westbury
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Maintenance · Westbury, NY · May 2026
Commercial Rooftop Unit Maintenance on Two Trane RTUs in Westbury
Two Trane packaged rooftop units, one visit: new filters, cleaned coils and refrigerant pressure checks before summer.
BeforeAfter
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- Before
- Out with the old: one of the used pleated filters pulled from the unit, grey with trapped dust.
- After
- In with the new: a clean 20x25 replacement filter, ready to go into the rack.
Photos are lightly enhanced for clarity. The work shown is as installed or serviced.
The problem
Two Trane packaged gas/electric rooftop units heat and cool a commercial building in Westbury. Scheduled preventive maintenance was booked for both of them in May, ahead of the summer cooling season. Rooftop equipment is easy to forget because nobody sees it. Filters load up, coils collect dirt, and small issues can grow quietly until they cause downtime.
Our solution
We opened up both units on the roof and worked through a full rooftop-unit tune-up on each one. The old pleated filters came out and new 20x25 filters went into each filter rack. We cleaned the evaporator and condenser coils using coil cleaner and a sprayer. Gauges went onto every compressor circuit to check refrigerant operating pressures, including both circuits on the two-compressor unit. We opened and inspected the control and compressor compartments. The tune-up scope also covers belt and bearing inspection, safety checks and operational testing, and each unit had its own tune-up consumables kit.
The result
Both rooftop units finished the visit with fresh filters, cleaned coils and refrigerant pressures checked on every compressor circuit, and the building went into the summer on maintained equipment. This was routine preventive care and no repairs were part of the job. That is the point of maintenance: catch small things early, before they turn into downtime.
Serviced
- Trane YSC090F4EHA packaged rooftop unit (RTU 1), serviced
- Trane YSC120F4EHA packaged rooftop unit (RTU 2), serviced
Highlights
- Two Trane packaged rooftop units (YSC090 and YSC120 models) serviced on a single visit
- Old pleated filters replaced with new 20x25 filters in both units
- Evaporator and condenser coils cleaned on both units
- Refrigerant operating pressures checked on every compressor circuit
- Control and compressor compartments opened and inspected
- Routine preventive visit ahead of the summer cooling season; no repairs were part of this job
Scope of work
- 01Annual tune-up on two Trane packaged rooftop units
- 02Removed the used pleated filters and installed new 20x25 filters in each unit
- 03Cleaned the evaporator and condenser coils on both units
- 04Checked refrigerant operating pressures with gauges on each compressor circuit
- 05Opened and inspected the control, electrical and compressor compartments
- 06Belt and bearing inspection, safety checks and operational testing, as covered by the tune-up scope
More photos from the job
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On arrival: one of the two Trane packaged rooftop units, with its panels still closed and the gas line running to the unit. -
Panels off. The filter rack, blower section, controls and compressor are all opened up for service. -
Set up for coil cleaning: cleaner bottles on top of the unit, with a sprayer and bucket beside it. -
Inside the compressor and control section: two compressors, contactors and the control board, inspected during the tune-up. -
Gauges on both compressor circuits of the two-compressor unit to check refrigerant operating pressures. -
New filters seated in the filter rack, right beside the evaporator coil.
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