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How Often Should Preventive Maintenance Be Done?

December 29th, 2025

1 min read

By Bethany sousa

Tech outside of building looking over busy city

How often should HVAC preventative maintenance be performed?

Harold Brothers typically recommends service bi annual maintenance for commercial buildings, quarterly HVAC preventative maintenance, or even monthly HVAC maintenance for high demand facilities depending on the building size and system load.

What should be included during each maintenance visit?

A visit usually includes filter changes, coil cleaning, refrigerant checks, electrical testing, and system calibration. To see what this looks like step by step, review what happens during a preventative maintenance visit.

What determines how often PM should be done?

Harold Brothers bases the schedule on building size, equipment type, age of the system, and how heavily the facility relies on heating or cooling. 

Why is a consistent PM schedule important?

Regular maintenance prevents breakdowns, reduces energy waste, and helps equipment last longer. You can learn more about the financial impact in commercial HVAC preventative maintenance cost.

Where can I learn more about Harold Brothers’ PM services?

If you want to explore service plans or schedule a walkthrough, visit Harold Brothers preventative maintenance services.