Signs Your RTU Is Failing
Signs Your Rooftop Unit (RTU) Is About to Fail This Summer
As temperatures rise, commercial HVAC systems are pushed to their limits—especially rooftop units (RTUs). These systems are the backbone of cooling for many commercial buildings, and when they fail during peak summer heat, it can disrupt operations, impact tenant comfort, and lead to costly emergency repairs.
Understanding the warning signs of RTU failure can help facility managers and property owners take proactive steps before a breakdown occurs.
Why Rooftop Units Struggle in Summer
Rooftop units operate in extreme conditions year-round, but summer heat places the greatest strain on system components. Prolonged run times, high outdoor temperatures, and increased cooling demand can accelerate wear and tear.
Without proper maintenance, even a well-functioning RTU can quickly become inefficient—or fail entirely—during peak season.
Common Signs Your RTU May Be Failing
Weak or Inconsistent Cooling
If certain areas of your building are not cooling evenly, or if the system struggles to maintain set temperatures, your RTU may be losing capacity. This is often an early indicator of compressor issues, airflow restrictions, or refrigerant problems.
Unusual Noises or Vibrations
Grinding, rattling, or banging sounds coming from your rooftop unit should never be ignored. These noises can point to loose components, motor issues, or failing internal parts that could lead to system failure if not addressed.
Increased Energy Bills
A sudden spike in energy costs without a clear explanation is a strong sign your RTU is operating inefficiently. Systems nearing failure often work harder and run longer to achieve the same results.
Frequent Cycling
If your RTU is constantly turning on and off, it may be short cycling. This can be caused by thermostat issues, electrical problems, or an overworked system—and it puts additional strain on components.
Poor Airflow
Weak airflow throughout the building may indicate clogged filters, failing fans, or ductwork issues. Reduced airflow not only impacts comfort but also forces your system to work harder.
Leaks or Moisture Around the Unit
Visible water or refrigerant leaks are clear warning signs that something is wrong. Left unaddressed, leaks can lead to system damage, reduced efficiency, and even complete failure.
The Cost of Waiting Too Long
Delaying repairs on a failing RTU often leads to more extensive damage and higher costs. What could have been a minor repair can quickly escalate into a full system replacement—especially during peak summer demand when parts and service availability may be limited.
Unexpected downtime can also impact tenants, employees, and customers, making proactive maintenance critical for business continuity.
Preventative Maintenance Is Key
Routine maintenance is the best way to extend the life of your rooftop unit and avoid unexpected breakdowns. Regular inspections, filter changes, coil cleaning, and system testing ensure your RTU is operating efficiently when you need it most.
A proactive maintenance plan can also help identify small issues before they turn into major problems.
Partner with Level One HVAC
At Level One HVAC, we specialize in commercial rooftop unit service, repair, and preventative maintenance across Michigan. Our experienced technicians help facility managers stay ahead of costly failures—especially during the high-demand summer months.
If your RTU is showing signs of trouble, now is the time to act.
Schedule Your RTU Inspection Today
Don’t wait for a breakdown during peak heat. Contact Level One HVAC today to schedule an inspection and keep your system running at peak performance all summer long.
Serving all of Michigan
Call: 844-616-4822