HVAC Systems Resource Center

How to Prepare Your Commercial HVAC System for Summer

As temperatures rise, your HVAC system must work harder to maintain comfortable indoor conditions. Preparing your system before peak summer temperatures arrive can help reduce breakdowns and improve efficiency.

At WTD Mechanical, we recommend proactive maintenance before the cooling season begins.

1. Inspect and Clean Condenser Coils

Outdoor condenser coils collect dirt, debris, and pollen over time, reducing system efficiency.

Best Practice:

• Clean coils before summer startup

• Remove debris around outdoor units

• Ensure adequate airflow clearance around equipment

2. Test Thermostats and Controls

Improper thermostat settings or faulty controls can cause inconsistent cooling and unnecessary energy usage.

Best Practice:

• Verify thermostat calibration

• Test scheduling and setback functions

• Confirm building automation systems are operating correctly

3. Check Refrigerant Levels

Low refrigerant levels can reduce cooling performance and damage compressors.

Best Practice:

• Have refrigerant pressures checked by qualified technicians

• Repair leaks immediately

• Ensure systems are operating within manufacturer specifications

4. Inspect Electrical Components

Summer heat increases strain on motors, capacitors, and electrical systems.

Best Practice:

• Tighten electrical connections

• Inspect contactors and capacitors

• Check motor amperage and startup performance

Final Thoughts
Preparing your HVAC system before summer arrives can help prevent emergency breakdowns, lower operating costs, and improve occupant comfort during the hottest months of the year. Preventative maintenance is always more cost-effective than unexpected downtime.