If you manage HVAC systems across retail chains, banks, medical clinics, or other commercial facilities, summer prep is one of the most critical actions you can take to ensure smooth operations, happy occupants, and cost control. Whether you’re familiar with HVAC or rely entirely on vendors, this guide is designed to walk you through why summer preparation matters, how it’s done, and what can happen if it’s skipped. Why Preparing for Summer is a Must Ensure Occupant Comfort: During summer, HVAC systems work overtime to maintain indoor comfort. When systems aren’t ready for the heat, you risk hot, stuffy conditions that frustrate staff and drive customers away. In retail and banking, poor climate control can reduce dwell time and customer satisfaction. In medical settings, it can impact patient safety. Summer prep ensures your HVAC system can meet high cooling demands before outdoor temps climb. Improve Energy Efficiency and Reduce Costs: The U.S. Department of Energy states that well-maintained HVAC systems can lower energy bills by 5% to 20% annually.1 Dirty filters, incorrectly programmed thermostats, or worn belts cause your unit to run inefficiently. A well-tuned system uses less electricity to produce the same cooling output — critical for keeping your operating costs in check during peak summer months. Prevent Costly Breakdowns: Summer is peak season for HVAC repairs — not just because of the heat, but because neglected systems fail under stress. When components are close to failure, high loads push them over the edge. Emergency repairs can cost double or triple compared to scheduled maintenance, not to mention lost revenue from downtime or store closures. Protect Indoor Air Quality: Dirty coils and clogged filters reduce airflow and recirculate dust & allergens. Poor indoor air quality can cause illness and can be a liability in regulated environments like healthcare or foodservice. Summer prep includes cleaning and changing these components to ensure clean, breathable air. Extend Equipment Lifespan: Commercial HVAC systems are major capital investments, and extending their life means protecting your bottom line. Just like a car, routine maintenance and seasonal prep can add reliability and years of life to your HVAC units. The National Institute of Building Sciences confirms that preventative maintenance can extend equipment life by up to 40%.2 Factors Influencing HVAC Performance System Age: Older systems may be less efficient and more prone to issues. Building Usage: Facilities with high foot traffic or equipment may require more robust systems. Local Climate: For example, Florida's humidity and heat demand systems that can handle high moisture and temperature levels. Maintenance History: Regularly serviced systems perform better and last longer. What Summer Preparation Looks Like This is not just “changing the filters.” A full summer prep checklist includes: Filter Changes: This is the most basic — yet most frequently overlooked — task. Dirty filters restrict airflow and make systems work harder. For most commercial facilities, filters should be replaced every 1–3 months depending on usage and environment. Coil Cleaning: The evaporator coil (inside) and condenser coil (outside) can accumulate dirt and debris. Dirty coils reduce the system’s ability to absorb and transfer heat, making cooling less efficient and increasing energy use by as much as 30%. Refrigerant Level Check: Low refrigerant often means a leak, and it’s one of the top causes of poor cooling. If levels are low, your vendor should perform a leak check and repair. Topping off refrigerant without fixing leaks is throwing money away — and it’s illegal under EPA Section 608. Electrical Component Check: Your technician should check capacitors, contactors, wiring, and relays. A failed capacitor or burned contactor can shut down your entire unit. These are inexpensive parts but cause expensive emergencies if not caught early. Thermostat Calibration Programming: Thermostats that aren’t programmed correctly can cause the units to run at unnecessary times or not run when needed. If you’re using smart or networked thermostats, now’s the time to review programming and energy-saving setpoints. Duct Inspection (Where Accessible): Leaky or blocked ductwork forces your unit to work harder to cool the same space. Sealing and cleaning ducts can significantly improve airflow and efficiency. Drain Line Clearance: Condensate drain lines can clog with algae or debris, especially in humid environments. Clogs cause water backups that damage ceilings or floors. Summer prep includes flushing the drain line and adding anti-algae tablets if needed. Plan Ahead While preparing your HVAC systems for summer offers a long list of benefits, especially when managing multiple commercial sites, seasonal maintenance does come with upfront costs, especially if you're servicing dozens or even hundreds of units. Coordinating these inspections across multiple locations can also be logistically challenging, particularly if you’re scheduling during the spring rush when HVAC vendors are in high demand. In some cases, maintenance inspections may uncover hidden issues—particularly in older systems—which could lead to unexpected repair expenses. Still, identifying and addressing problems early is almost always less costly than responding to mid-summer emergencies. In short, while summer prep requires planning and budget allocation, the long-term rewards far outweigh the short-term inconvenience. Final Thoughts: Be Proactive, Not Reactive Summer HVAC prep isn’t optional — it’s a strategic advantage. Facilities that schedule seasonal maintenance avoid costly disruptions, control energy costs, and increase the lifespan of their HVAC investments. As a facility manager overseeing multiple sites, the most effective step you can take is to establish a consistent pre-summer maintenance schedule with your service vendors, documented and tracked. References [1] https://betterbuildingssolutioncenter.energy.gov/solutions-at-a-glance/preventative-maintenance-commercial-hvac-equipment [2] https://www.wbdg.org/resources/high-performance-hvac To read more about how to get your system ready for summer, check out Facility Executive’s article https://facilityexecutive.com/air-conditioning-is-your-facility-ready-for-the-summer How do you prepare your sites for the summer heat? What challenges do you face coordinating HVAC maintenance across multiple locations? Share your insights, questions, or lessons learned in the comments below — let’s start a conversation that helps everyone keep their cool this summer.

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