Free rooftop unit quarterly service procedure
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Last updated: 2026-04-24 · MapTrack
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What is a rooftop unit quarterly service?
A rooftop unit quarterly service is a scheduled preventive maintenance procedure for packaged rooftop HVAC units performed every three months. MapTrack helps HVAC contractors manage rooftop unit servicing with digital checklists that technicians complete on-site from any mobile device. The service covers the refrigeration circuit compressor condenser coil evaporator coil economiser section filters belts gas heating section and controls.
Rooftop units are the workhorse of commercial HVAC in Australia powering offices retail spaces warehouses and light industrial buildings. Because they are exposed to weather on the roof quarterly servicing is critical to catch corrosion condenser fouling and belt wear before they cause comfort complaints or compressor failure.
Benefits
- Reduced breakdowns: catching condenser fouling belt wear and refrigerant issues quarterly prevents mid-summer compressor failures
- Energy savings: clean condenser coils and correct refrigerant charge reduce compressor energy consumption significantly
- Compliance: documented service records demonstrate the PCBU has met their plant maintenance obligations under the WHS Act
- Consistent quality: a structured procedure ensures every rooftop unit receives the same thorough service regardless of technician
- Extended compressor life: monitoring suction and discharge pressures superheat and subcooling protects the compressor from damage
- Warranty protection: most manufacturers require documented quarterly servicing to maintain warranty coverage on rooftop units
Benefits of digitising forms in MapTrack
When you digitise rooftop unit service procedures in MapTrack, you get:
- Field users can easily scan a QR code to complete a form on mobile. Unlimited users.
- Automatically get alerts when faults are identified.
- Link every form digitally as a PDF to the relevant asset, location or person.
- Receive a digital PDF copy with every submission to your email.
- Ability to share forms digitally.
- Build conditional logic (show or hide questions based on answers).
- Take pictures or attach photos. Not possible with a paper-based form.
- Electronic signatures.
- Edit forms later without reprinting.
- Restrict permissions (who can view, complete or approve).
- Build forms with AI (describe what you need and MapTrack suggests the form).
- Log refrigerant charge weights and leak-check results against each unit.
- Schedule seasonal changeover inspections tied to heating and cooling cycles.
- Track filter, belt and coil replacement intervals per system.
Book a demo to see digital inspections and forms in MapTrack.
Run digital rooftop unit services on mobile
Try MapTrack free for 30 days. Technicians complete rooftop unit services on mobile and store every record against the asset automatically.
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What to include in a rooftop unit quarterly service
- Filters: inspect and replace return air filters and check filter rack seals
- Condenser coil: inspect for fouling debris and corrosion then clean with approved coil cleaner
- Evaporator coil: inspect condition check condensate drain pan and verify drain flow
- Compressor: record suction and discharge pressures running amps oil level and check for unusual noise or vibration
- Belts and pulleys: check supply fan belt tension alignment and wear then replace if cracked or glazed
- Economiser: verify damper operation actuator stroke and minimum position setpoint
- Gas heating section: inspect burners igniter flame sensor heat exchanger and flue for cracks or corrosion
- Electrical and controls: check contactor condition thermostat operation safety controls and wiring connections
How to complete a rooftop unit quarterly service
- Access and isolate: set up safe roof access then lock out the rooftop unit at the local isolator and verify zero energy
- Inspect and replace filters: remove return air filters and note condition then install new filters and check filter rack for bypass gaps
- Clean condenser coil: remove debris from the condenser guard then apply coil cleaner and rinse with low-pressure water from inside out
- Check refrigeration circuit: connect gauges and record suction pressure discharge pressure superheat and subcooling then compare to manufacturer specifications
- Inspect fan and belts: check supply fan belt tension and condition inspect pulleys for wear and measure motor running amps
- Test economiser and controls: cycle the economiser damper through full range verify minimum outside air position and check thermostat operation
- Document and close out: record all readings and findings sign the service form and set the next quarterly service date
How often should a rooftop unit be serviced?
Rooftop units should receive a quarterly preventive maintenance service as a minimum. Most manufacturers specify quarterly servicing to maintain warranty coverage. For units in coastal areas or dusty environments condenser coil cleaning may be needed monthly during peak cooling season in addition to the quarterly service.
Under the Australian WHS Act a PCBU must ensure plant is maintained inspected and tested so it remains safe. Rooftop units also fall under the Ozone Protection and Synthetic Greenhouse Gas Management Act when refrigerant work is performed. All refrigerant handling must be carried out by a technician holding a current ARCTick licence.
Frequently asked questions
- What does a rooftop unit quarterly service include?
- A quarterly rooftop unit service covers filter replacement, condenser coil cleaning, evaporator coil inspection, compressor operating pressures and amps, belt and pulley inspection, economiser damper testing, gas heating section checks, and electrical and controls verification. It typically takes 1.5 to 2.5 hours per unit.
- Do I need a refrigerant licence for rooftop unit servicing?
- If the service involves connecting refrigerant gauges, topping up refrigerant or recovering gas, the technician must hold a current ARCTick refrigerant handling licence. Visual inspections, filter changes, belt replacement and cleaning do not require a refrigerant licence.
- How do I know if the economiser is working correctly?
- During the quarterly service, cycle the economiser damper from minimum to maximum position while monitoring the actuator. The damper should move smoothly through full stroke. Verify the minimum outside air position meets the design specification for ventilation compliance under AS/NZS 1668.2.
- Is the template free to use without MapTrack?
- Yes. Download and use the rooftop unit quarterly service procedure for free. Open the file and use your browser Print to Save as PDF. No MapTrack account required.
Need this digitally on mobile?
Build digital forms in MapTrack. Workers scan a QR code on their phone, complete the form, sign electronically and the record is stored automatically. Supervisors get alerts when each form is completed. All records are stored digitally, ready for any audit.