What does this air-cooled condensing unit annual checklist cover?

15 items across 5 sections, covering lockout and cabinet, coil and airflow, refrigerant side, electrical and compressor, and more. Each item spells out what the person walking the job is actually looking for, not just a box to tick.

Who should run this inspection?

The licensed refrigeration tech on the annual, the only one touching the refrigerant circuit.

When in the schedule should this walk happen?

Once a year at cooling-season startup, so the coil clean, the charge check and the electrical service all happen before the unit is leaned on.

Why do these items ask for a photo?

11 of the 15 items call for photo evidence, 14 photos in all. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.

What most often fails an air-cooled condensing unit annual inspection?

Charge judged by a single gauge glance instead of a proper subcooling or superheat reading, so a slow leak or an overcharge rides for another season. Contactor points burned and pitted left in service, so the compressor eventually fails to pull in on a hot-day start and the call comes in as a no-cool. Coil pressure-washed hard enough to lay the fins flat, trading a dirty coil for an airflow-starved one.

Can I use this checklist in RTI?

Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper evident audit trail.

Free checklist

Air-cooled condensing unit annual maintenance checklist

The annual condensing unit service is the deep pass: the measurements, cleanings and tests a quarterly round doesn't reach. This checklist keeps the full service on record with the photos that make it defensible later. Work is commonly verified against manufacturer's published instructions. Confirm the edition your authority having jurisdiction has adopted.

Start free with this checklist Download as PDF

The checklist

Every item, and the photo evidence it needs

The photo count on each row is what RTI would require before the item can be submitted. Work the list here and watch the gate hold, or load it into RTI and let it enforce the real thing.

Lockout and cabinet

Lockout and tag applied at the unit disconnect
Disconnect locked, tagged and zero voltage proven on the load side; charge, amp and safety checks run under the procedure's temporary release, people clear, re-locked before hands go back in.
Base pan and compressor compartment cleared out
Leaves, litter and nesting removed from the base pan and compressor bay, drain openings in the pan clear, no chewed wiring or insulation.

Coil and airflow

Condenser coil deep-cleaned through the rows
Coil cleaned through the full depth with the correct cleaner and pressure, debris flushed from between the rows, fins combed straight afterward.
Fan blades, hub and motor mount serviced
With the unit locked out, blades checked for cracks, hub set screw tight on the shaft, motor mount bolts snug and no end play or rough spots turning the shaft by hand.

Refrigerant side

Refrigerant charge verified by measurement
Charge confirmed by subcooling or superheat per the unit's method rather than a gauge glance, readings compared against the manufacturer's target for the conditions.
Refrigerant circuit leak-checked
Connections, service ports and coil checked for oil staining or leaks, any suspected leak confirmed with a detector, no signs of past top-offs masking a leak.
Refrigerant added or recovered logged by the certified tech
Any charge adjustment, leak repair or recovery done by a certified refrigerant technician, with the amount and refrigerant type entered on the unit's refrigerant log.
No photo

Electrical and compressor

Contactors, relays and wiring serviced
Contactor points inspected for pitting and burning, connections tightened, no discolored or brittle wiring, capacitors within tolerance where fitted.
Compressor and motor readings within nameplate
Compressor and fan-motor amp draw read against nameplate, crankcase heater working where fitted, no unusual start behavior or noise.
Capacitors discharged and read against their rating
With the unit re-locked, each run or start capacitor discharged and read against its printed rating, no bulged top or oil; inverter units checked per the manufacturer instead.
Supply voltage read at the unit against nameplate
Line voltage and balance across phases read at the disconnect under the site's energized-work procedure and PPE, within the nameplate range with the unit running.
Unit safeties tested per the manufacturer's procedure
High and low pressure controls, compressor overload and any anti-short-cycle delay proven to trip and reset as the manufacturer describes, none jumpered or bypassed.
No photo

Return to service

Panels, guards and disconnect cover refitted
Every access panel fastened, fan guard secure, disconnect cover closed, and no tools, rags or cleaner containers left inside the cabinet.
Locks removed and unit restarted on a cooling call
Lock and tag cleared by the person who hung them, unit restarted and run until pressures and fan staging settle, then cycled off cleanly.
No photo
Annual readings recorded as next year's baseline
Voltage, amp draws, charge readings and capacitor values entered against the unit so next season's service is compared against this one.
No photo

What usually sends this back

The failures are almost always the evidence, not the work

Charge judged by a single gauge glance instead of a proper subcooling or superheat reading, so a slow leak or an overcharge rides for another season.
Contactor points burned and pitted left in service, so the compressor eventually fails to pull in on a hot-day start and the call comes in as a no-cool.
Coil pressure-washed hard enough to lay the fins flat, trading a dirty coil for an airflow-starved one.

Common questions

6 answers

What does this air-cooled condensing unit annual checklist cover?: 15 items across 5 sections, covering lockout and cabinet, coil and airflow, refrigerant side, electrical and compressor, and more. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
Who should run this inspection?: The licensed refrigeration tech on the annual, the only one touching the refrigerant circuit.
When in the schedule should this walk happen?: Once a year at cooling-season startup, so the coil clean, the charge check and the electrical service all happen before the unit is leaned on.
Why do these items ask for a photo?: 11 of the 15 items call for photo evidence, 14 photos in all. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
What most often fails an air-cooled condensing unit annual inspection?: Charge judged by a single gauge glance instead of a proper subcooling or superheat reading, so a slow leak or an overcharge rides for another season. Contactor points burned and pitted left in service, so the compressor eventually fails to pull in on a hot-day start and the call comes in as a no-cool. Coil pressure-washed hard enough to lay the fins flat, trading a dirty coil for an airflow-starved one.
Can I use this checklist in RTI?: Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper evident audit trail.

Related checklists

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Run it with the Photo Gate

A checklist nobody can submit half-finished

Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 14 required photos exist. Approved walks roll into a branded turnover package with a tamper evident record behind every line.