Define the units and maintenance scope
List rooftop and ground-mounted units by asset number, served area and manufacturer. Ask the mechanical contractor to establish the service tasks and intervals for the specific equipment, occupancy and operating conditions. Filter replacement, belt checks and coil care do not share one universal quarterly or annual schedule.
Keep tenant complaints and operating trends with each unit’s service record. Repeated temperature or airflow problems require diagnosis; changing a filter does not establish that controls, ventilation, refrigerant charge or equipment capacity are correct.
Control coil and condensate problems
Inspect accessible surroundings for debris and restricted airflow without opening equipment. Coil cleaning methods must suit the unit; aggressive washing can damage fins or electrical parts. Schedule a competent technician when fouling or service findings indicate a need rather than calling annual washing a non-negotiable rule for every installation.
Trace reported water leaks through the condensate system and adjacent roof details. A blocked drain pan or line and a failed curb flashing can produce similar interior symptoms. Record the location, operating conditions and weather so the appropriate trade can investigate the source.
Protect equipment without obstructing service
Where vehicles can reach ground units, assess impact protection against actual approach paths, utilities, service access and manufacturer clearances. Bollards or cages must not restrict airflow, combustion openings, drainage or technician access. A low-cost protection claim is not a design or a quotation.
After rooftop work, have the responsible contractor confirm panels and access covers are secure and debris has been removed. Review curb and penetration concerns with the roofer. Do not assume exterior sealant applied around visible joints will resolve every roof leak.
Use seasonal observations to adjust service
Before cooling season, check for accumulated debris, vegetation growth and blocked drainage around equipment. During operation, record new noise, icing, recurring alarms or comfort complaints for the technician. Local pollen or construction dust may justify additional attention, but no fixed two-week fouling period applies to every Waterloo Region site.
Before heating season and snowfall, coordinate service access and tell the snow contractor where units, intakes and discharge openings are located. Keep planned snow storage away from required clearances. Unsafe roof conditions can limit access and should be planned for before a breakdown.
Verify the qualifications and the handover
Ontario regulates handling of specified refrigerants through its Ozone Depletion Prevention requirements. An ODP card alone does not qualify someone to repair refrigeration equipment; applicable trade qualifications are separate. Verify the credentials and scope needed for the proposed refrigerant, electrical or fuel-related work.
Request a service record identifying the unit, findings, work performed and remaining defects. Separate repair recommendations from included contract work and confirm any promised response terms in writing. Discuss visible site concerns separately from the technician’s equipment service scope.
Technical references
- Ontario: Certificate to handle refrigerants — Ontario ODP scope and separate equipment-repair qualifications.
- ESA: Electrical contractor licensing — Verify ESA licensing for contracted electrical work.
Sources & References
- Ontario Building Code — Relevant Standards & Guidelines
Include a preferred date and time
Send a commercial maintenance request
Describe the work area, site access and any operating hours the work must accommodate.
Prefer to send the details first? Request a quote or call (519) 501-5003.