Every 6 to 12 months as a baseline, and more often for busy sites. The right number for your building depends on run hours, the environment and, in WA, compliance rules many business owners haven’t heard of.
Key Takeaways:
- Manufacturer guidance puts commercial and heavy-use spaces at a service every 6-12 months, against 12-24 months for homes (Seeley International).
- In WA, the Health (Air-handling and Water Systems) Regulations 1994 cover most non-residential buildings; cooling towers need at least monthly inspections.
- Run hours drive the schedule: a system cooling a shop or office all week works several times the hours of a home unit.
What’s the Recommended Service Frequency?
Manufacturer Seeley International’s servicing guidance recommends a professional service every 6 to 12 months for heavy use and commercial spaces, double the frequency it suggests for homes. High-load sites, think long trading hours, dusty workshops or constant door traffic, sit at the shorter end or beyond it.
| Site factor | What it means for your schedule |
| Long trading or operating hours | More run hours, shorter service intervals |
| Dust, kitchens or workshop air | Filters and coils load up faster |
| Cooling tower on site | Monthly inspections under WA regulations |
| Manufacturer warranty terms | Many require documented regular servicing |
Why Do Commercial Systems Need More Than Homes?
Run hours. A home split system might work evenings and weekends; a system cooling a shop, office or clinic runs all day, every trading day. That multiplies wear on filters, coils and compressors. Our guide to how often you should service your air conditioner covers the residential side. There’s also a productivity angle: poor air quality is a hidden problem in Perth commercial buildings, and neglected systems are a common cause.
How Should Property Managers Plan It?
Set the schedule per site, not per portfolio: a beauty salon and a warehouse on the same books need different intervals. Keep service records centralised for compliance and warranty claims, and use one contractor across sites so faults get spotted in patterns, not isolation. Our commercial property manager service works this way, and what a professional service includes shows what should appear on every report.
Frequently Asked Questions
For some sites, yes. Quarterly makes sense where run hours are long, the air is dusty or a warranty requires it; a low-use office may be fine at the 6-12 month baseline. Let the site’s load set the interval, not a one-size rule.
Under the WA regulations, the building owner must ensure a competent person manages and maintains covered systems. Who pays for routine servicing is a lease matter, so check your agreement; in practice it’s often passed to tenants through outgoings.
It can. Many manufacturers require documented regular servicing by qualified technicians as a warranty condition. Keep every service report on file; if a compressor fails in year four, that paper trail is what the claim rests on.
Want a Service Schedule Built for Your Site?
WestOz Trades services commercial air conditioning across Perth with refrigeration mechanics and a 48-hour response time for issues. Get in touch and we’ll build a schedule around how your building actually runs.
