Why 2026 is Shaping Up to Be an Unpredictable HVAC Cooling Season

As the U.S. enters the transition into cooling season, for building owners and facilities managers, early spring represents a critical window to ensure that HVAC systems are running properly and to get ahead of pre-season maintenance evaluations before the heat hits.

This year, early systems maintenance and planning will be even more important with the NOAA forecasting a 62% chance that El Niño, the warmer-than-average climate pattern, will return as early as June and persist through the end of 2026. If this forecast holds true, institutional HVAC systems across hospitals, schools, residential housing, and commercial facilities could face greater downtime risks, systems strain, and longer technician wait times than in a typical summer.

Across the institutions surveyed in Parts Town’s 2025 “Downtime Survey,” including education, healthcare, hotels, and corporate entities, HVAC systems were identified as one of the most critical pieces of facility equipment. More than half of institutions reported relying on nine different types of HVAC equipment, underscoring how central these systems are for everyday operations.

With summer being the peak time for system overuse and knowing the potential for unpredictable weather patterns, building management teams need to get ahead of their cooling maintenance to ensure compliance and avoid costly repairs or replacements, critical downtime, and the risks of a major fallout.

Three Considerations for Facility HVAC Preparedness & Maintenance Ahead of Summer

1. Why Risk Mitigation Starts Now

For many institutions, HVAC reliability is a safety factor as even a brief outage in the middle of summer can put critical operations at a standstill. For example, hospitals depend on consistent, safe airflows and temperature controls to protect patients’ health, and an HVAC failure can halt time-sensitive surgeries and procedures. According to the Downtime Survey, healthcare institutions perform preventative HVAC maintenance far more often than for other systems, reinforcing how critical properly functioning heating and cooling is for these types of facilities.

Spring is often the last opportunity to address any deferred maintenance that accumulated over the winter before cooling season demand exposes hidden weaknesses. Even issues that appear to be minor like outdated filters, blocked drain and condensation lines, and water buildup from drain pans can quickly escalate into a larger emergency once systems shift into continuous operations. Leveraging a detailed checklist (like this one) can help technicians make certain that systems are meeting safety regulations.

Facility leaders can mitigate risks and fallout through early maintenance checklists and enlisting a skilled technician to conduct a full-service inspection to identify any vulnerable parts before it’s all systems go. From a risk management and compliance standpoint, proactive spring maintenance reduces the likelihood of unscheduled outages during peak heat when the consequences of stilled operations can be significant.

2. Smart Technology & Refrigerant Changes are Adding HVAC Complexity

The evolution of HVAC technologies and ongoing refrigerant changes are becoming added factors that institutions won't be able to ignore this season. As new industry regulations and efficiency standards phase out legacy refrigerants, many facilities have either upgraded to smart HVAC equipment designed for modern refrigerants, or they’re operating under a combination of old and new systems.

The growing complexity of smart technologies, refrigerant updates, and shifting industry standards increases the importance of scheduling spring inspections. Different refrigerants operate at different pressures and require specific lubricants, seals, and components, while smart systems require advanced knowledge and consistent technician education. Heading into summer cooling season, it will be more important than ever to enlist a skilled technician who understands the nuances of both legacy and upgraded systems.

Pre-season maintenance can give facility leaders peace of mind, ensuring refrigerants are compatible with their specific HVAC systems, monitoring tools like sensors and controls are operating correctly, and airflows are consistent. Additionally, enlisting a reliable parts supplier that offers a vast range of legacy and modern OEM parts is key for making sure systems of all kinds have access to the necessary tools and resources should an emergency happen.

3. Repair Summer in the Books for Institutions

Conducting routine maintenance reduces the risk of costly emergency repairs. These preventative check-ups also help minimize the risk of needing a full system replacement, an expense that can result in days or even weeks of downtime during peak summer heat.

This spring and summer, more HVAC consumers will elect to repair parts over replacing full systems, especially when factoring in unpredictable weather patterns associated with El Niño and the rise in HVAC costs. This growing consumer confidence in repair-first strategies is also driving higher demand for high-dollar OEM parts as opposed to investing in an entire systems replacement.

While the repair-over-replace trend can help deliver significant cost savings for facilities, it also reinforces the need for early maintenance. The summer season is prime time for HVAC systems to break down, meaning greater demand for available parts, higher service costs, and less technician availability. It can cost up to $15,000 to replace a complete HVAC system, and in the middle of peak demand, summer premiums can impact budgets. According to the Downtime Survey, respondents across education, healthcare, and hotels say that 22% of all HVAC downtime can cause over $1,000 in lost revenue.

Proactive spring check-ups help prevent premature system replacements, mitigate costs and allow facility leaders to strategically plan investments in modernized HVAC models down the line.

Power of Enlisting a Reliable HVAC Partner Now

Demand for HVAC components surges during the cooling season, meaning even routine issues can escalate quickly. That’s why it’s critical for building owners and facilities managers to have a dependable HVAC strategy and strong service partnerships in place before the turn of the season.

Partnering early with a trusted HVAC parts distributor gives facilities and their technicians greater visibility into inventory availability and lead times before peak demand. Additionally, experienced technicians can also play a key role in helping to educate institutional managers on what it takes to keep systems functioning properly.

Taking action in the spring enables building owners and managers to be more confident when it comes to planning maintenance, managing costs, and avoiding expensive, reactive decisions under pressure during the height of summer chaos.