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Hot Tips for a Cool Summer | 10 Ways to Prepare Your Commercial HVAC System for Summer

Updated: Jun 5

Learn how to prepare your commercial HVAC system for the hot and humid days ahead

sun beating down on commercial building rooftop lined with HVAC equipment. ETS logo. text '10 ways to prepare your commercial HVAC for summer' .

As the mercury starts to climb and we swap out our sweaters for shorts, it’s not just us humans that need to prep for the heat – our trusty commercial HVAC systems do, too.

You know, those big hulking heroes that keep our workplaces cool while the sun’s out there playing its fiery symphony.

I remember this one summer, the air conditioning in my office went kaput. It was like a sauna in there, and let me tell you, productivity melted faster than ice cream on the sidewalk.

That’s when I realized the true power of a well-prepped HVAC system. It’s not just about comfort; it’s about keeping the business running smoothly.

So, let’s dive into some hot tips that’ll keep your HVAC system chillin’ like a boss, ensuring you and your team can stay cool, collected, and ready to tackle the summer months with ease. Trust me, your future self (and your electric bill) will thank you!

We’re talking filters, ducts, and all the cool (pun intended) ways to save some green while going green.

Let’s make this summer a breeze!

Who Will Benefit from This List?

Whether you’re a seasoned business owner or a diligent facility manager, this list is tailored for you.

It’s particularly useful for those responsible for:

  • Ensuring the comfort of employees and customers

  • Managing operational costs effectively

  • Overseeing the maintenance and longevity of HVAC equipment

  • Prioritizing workplace safety and health standards

10 Ways to Prepare Your Commercial HVAC System for Summer

1. Change or Clean the Air Filters

two medeival soldiers surronded by clouds of dust holding up a commercial air filter. ETS logo. text ' change air filters regularly'

Why? Clean filters are the first line of defense in maintaining air quality and system efficiency, so doing this at the start of summer will ensure your system is performing at a high level.

How Often? At a minimum, change filters every quarter; more frequently in high-pollutant areas.

commercial HVAC air filters being replaced


  • Improved air quality reduces health risks.

  • Lower energy consumption leads to cost savings.

  • Prolongs the life of your HVAC system.

HVAC filters are distinguished by their Minimum Efficiency Reporting Value (MERV), a numerical rating that signifies their efficiency in capturing particles.

How often you change your commercial HVAC systems air filter may depend on the type of filter you are using.

2. Inspect the Condenser Unit

magnifying glass overtop of an HVAC condenser. rtu hvac. rooftop HVAC condenser with the sun setting in the background. engineered temperature solutions logo. text 'inspect the condenser' .

Why? The condenser unit is crucial for expelling heat from your building.

What to Look For? Clear any obstructions and ensure there’s at least 2 feet of clearance around the unit.


  • Prevents overheating and potential system failure.

  • Ensures efficient operation and energy use.

3. Check Mechanical Parts

Why? Mechanical integrity is key to system performance.

Key Actions: Lubricate bearings, check belt tension, and inspect for wear and tear.


  • Reduces the risk of unexpected breakdowns.

  • Maintains system efficiency and performance.

side-by-side comparison of a clean and dirty HVAC evaporator coil. engineered temperature solutions logo. text 'clean coils' .

Why? Dirty coils can’t release heat effectively, straining your system.

How to Clean: Use a commercial coil cleaner and follow the manufacturer’s instructions.


  • Enhances system efficiency and reduces energy costs.

  • Helps avoid costly repairs due to overheating.

5. Inspect Coolant Lines

HVAC technician repairing coolant line connected to air conditioner. text 'inspect coolant lines' .
background photo: @gettyimages via

Why? Proper refrigerant levels are essential for cooling performance.

What to Do: Look for signs of leaks or insulation damage.


  • Ensures optimal cooling and system efficiency.

  • Avoids increased operational costs due to leaks.

6. Run the AC Units

Why? Testing ensures readiness for peak performance.

When to Test: Do a full system run-through before the summer heat arrives.


  • Identifies potential issues early.

  • Provides time for repairs without disrupting business operations.

7. Seal Air Ducts

Why? Duct leakage can significantly impact system efficiency.

How to Seal: Use mastic sealant or metal tape for any visible gaps or holes.


  • Maximizes airflow and cooling efficiency.

  • Reduces energy waste and lowers utility bills.

8. Program Your Thermostat

a dark background image of a commercial building. smart thermostat. engineered temperature solutions logo. text 'program your thermostat' .
background photo: @blackrancho via

Why? Smart temperature management saves energy.

Tips: Set different temperatures for business and non-business hours.


  • Consistent comfort during operational hours.

  • Energy and cost savings during off-hours.

9. Prepare Your Employees

Why? Educating your staff can ensure best practices are followed for optimizing your HVAC system.

Tips: Instructions like keeping doors and windows closed will ensure that the HVAC system isn't working harder than it needs to be. Keep the hot air outside, and the cool air inside.


  • Consistent temps enhance employee focus and output.

  • Creates a pleasant environment for customers.

  • Less work for your HVAC system means improved longevity.

10. Inspect Wiring

HVAC unit opened up exposing wiring.  exposed HVAC wiring. rooftop hvac unit wires. engineered temperature solutions logo. text 'inspect wiring' .

Why? Electrical wiring is the nervous system of your HVAC unit. Damaged wiring can lead to malfunctions or even safety hazards.

What to Check: Look for loose connections, signs of overheating, frayed wires, and evidence of pests.

How to Inspect: Turn off the power before examining wires and connections. Use a multimeter to check for shorts.


  • Prevents electrical failures that could shut down your system.

  • Ensures safety by reducing the risk of electrical fires.

  • Maintains system integrity and performance.


Preparing your commercial HVAC system for summer is a strategic move that pays off in comfort, cost savings, and peace of mind.

By implementing these tips, you’ll be well on your way to a cool, comfortable, and efficient summer season.

Remember, proactive maintenance is key to avoiding the heatwave hustle.

Stay ahead of the game and ensure your business thrives in the summer heat. 😎🌡️🛠️

Click the banner below to contact Engineered Temperature Solutions, we have veteran experience that can solve all your HVAC needs!

icon of HVAC technician and an image of the Engineered Temperature Solutions logo, with text 'Let the professionals at ETS assist you with all of your commercial and industrial HVAC needs.'

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