Coating Your Commercial HVAC Coils

Commercial HVAC coils are essential for maintaining a comfortable indoor environment, but they are also vulnerable to damage over time. Environmental factors like humidity, moisture, and exposure to chemicals can lead to corrosion, which not only reduces efficiency but also increases maintenance costs and shortens the lifespan of your system. One of the best ways to protect your investment is by applying a durable, high-performance coating to your coils.

Applying a protective coating helps prevent corrosion caused by a wide range of contaminants, ensuring your HVAC unit continues to operate at peak performance, even in harsh conditions. It's an investment that pays off in terms of reliability, energy savings, and reduced downtime.

Which Coil Coating Should You Choose?

There are many different types of coil coatings available on the market, each with its own unique formulation and application process. As industry professionals, we’ve evaluated various options and found that Energy Guard USA stands out as one of the most effective solutions. Their coatings are trusted by many in the HVAC industry and have proven to be highly reliable over time.

Why Choose Energy Guard USA?

Our experience using Energy Guard USA coatings on both custom and OEM replacement coils has shown them to be among the most durable and effective in the industry. Here’s what sets their product apart:

• Their exclusive DCC formula (Dual Cure Chemistry) penetrates deeply into the coil and cures quickly—just 15 minutes—making it ideal for fast, efficient installations.

• The coating contains 30% aluminum flakes, enhancing thermal conductivity and improving heat transfer. It also has anti-microbial properties that help prevent mold and mildew growth.

• At just 1 mil thick (about the thickness of a human hair), the coating won’t chip or interfere with airflow, preserving the unit’s performance.

• Energy Guard USA coatings pass rigorous 10,000-hour salt spray tests (ASTM B117), proving their durability under extreme conditions.

• The high solids, low VOC polyurethane formula makes it environmentally friendly while still delivering strong protection against corrosion.

• All coatings are applied by expert-certified technicians, ensuring a professional and consistent finish every time.

What Does It Cost to Coat a Coil?

The cost of coating depends on several factors, including the size and complexity of the coil. When you request a quote for a custom or OEM replacement coil, be sure to ask about adding a protective coating—it often comes at a more favorable rate when done during installation. While it's possible to coat a coil after installation, this usually involves additional labor and fees.

Will a Coated Coil Last Longer?

Yes, a properly coated coil can last significantly longer than an uncoated one—often up to twice as long—if maintained correctly. However, keep in mind that a coating doesn’t prevent dirt buildup. You should still clean the coil regularly, just as you would with an uncoated unit. This ensures the coating remains intact and continues to provide long-term corrosion protection.

The Nationwide Coils Blog is a commercial HVAC blog written by industry experts with nearly two decades of experience. We share valuable insights into HVAC products, services, and maintenance tips. Feel free to reach out to us anytime with questions or feedback.