Why companies should prepare air compressors for summer

 In the air compressor field, summer is known as “air dryer season” due to the spikes in humidity the season can bring. Air dryers keep the moisture from ruining operations and damaging production.

Higher summer temperatures bring added moisture that can damage air compression systems without proper dryers in place. When hot, sticky summer air gets squeezed by an air compressor, water vapor condenses into water that can damage equipment, disrupt production and wreck product quality.

This phenomenon happens all year, but it’s intensified by the summer heat. Compressed air at 80°F contains more than twice as much moisture as it would at 50°F.

Moisture inside a compressed air system can be highly destructive. When it remains in air pipelines, fittings and valves, it causes internal rust and corrosion. This can lead to leaks, damaged seals and reduced system performance. Rust particles can travel into downstream equipment, clog filters and undermine flow consistency.

Moisture also impacts the performance of air-powered tools, such as impact wrenches, nail guns and paint sprays. It can wash away lubricants, which increases friction and accelerates wear on moving parts, reducing equipment lifespans. In high-speed tools like grinders or sanders, it can pose safety hazards.

Excess moisture threatens product quality, too. In painting applications, water can cause bubbles or fisheyes in the coating. In food and pharmaceutical production, moisture can carry contaminants or encourage microbial growth, posing safety and compliance risks.

Even a very small amount of moisture can compromise packaging adhesives or cause issues in automated machinery that depends on clean, dry air.

How an air dryer helps

To control moisture effectively, companies should utilize a reliable air dryer system that removes water vapor from the compressed air system — before it reaches tools, machines or end products.

There are two types of air dryers: refrigerated dryers and desiccant dryers. Choosing the right type of dryer depends on your specific application, the quality of the air required and the operating conditions of your facility.

Refrigerated dryers are the most commonly used option for general industrial applications. They cool the air to prevent moisture from turning into water vapor. These systems are effective in operating environments where the dew point is moderate, typically around 35°F to 50°F. They are well suited for tasks like powering pneumatic tools, operating machinery or general plant use where extremely dry air is not critical.

Desiccant dryers are designed for applications that demand a much lower dew point, often as low as -40°F or even -100°F. These dryers use a desiccant material, such as activated alumina or silica gel, to absorb moisture from the air. They are ideal for industries such as pharmaceutical manufacturing, electronics production or food processing, where eliminating moisture is critical to operations.

Don’t forget the drain

The process of draining condensates is another critical aspect that people tend to overlook during the summer months.

Most air compressors feature a manual drain valve at the bottom of the air tank. These valves must be operated by hand to discharge accumulated condensation. If not drained regularly, this moisture can build up, leading to corrosion and reduced performance. In some cases, operators leave the valve partially open to allow continuous drainage, but this leakage causes air loss and reduces system efficiency.

Summer maintenance tips

Performing a few seasonal maintenance checks can help prevent issues and keep your equipment at its peak. Here are four tips to help you prepare for the season:

• Schedule dryer maintenance: Schedule a service check to ensure dryers are operating efficiently and handling increased moisture load.
• Clean aftercooler and cooler surfaces: Coolers can become clogged with dirt, dust or pollen, especially in the summer. A blocked cooler reduces heat exchange, increases internal temperatures, and can cause system shutdowns. Make cleaning a regular part of a maintenance routine.
• Monitor and change compressor oil: Heat and humidity can shorten oil life and reduce effectiveness. Check oil levels frequently and replace the oil as needed to maintain proper lubrication and protect internal components from wear.
• Inspect Fans and louvers: Proper ventilation is essential in the hotter months. Check that your compressor room is well ventilated and that fans and louvers are working as intended. Good airflow helps keep internal temperatures within safe limits and reduces the risk of overheating.

Unsure if your compressed air system is ready for summer? Pattons can help!

Get in touch with our specialists for a summer-ready assessment of your air compression system.