Efficient operation of HVAC systems in commercial and industrial settings rely heavily on proper maintenance, including regular coil cleaning. One often overlooked aspect is the maintenance of multi-row condenser coils. Here’s a comprehensive guide to ensure your commercial coil cleaning goes smoothly.
Understanding Multi Row Condenser Coils
To enhance efficiency and maintain the compact footprint of units, many HVAC systems now have multiple layers of condenser coils. These multi-row coils, typically 2 or 3 rows deep, are common on large tonnage units today. (Although we may start seeing them on smaller units as the HVAC industry continues to try and improve unit efficiency).
A common mistake we see our customers make is not realizing they have a multi row unit. This leads them to believe that spraying the outside coil is sufficient for maintenance.
With each coil being roughly 2 inches thick, trying to clean through multiple rows of tightly packed coils becomes ineffective. While the outside coil may look clean, the coils behind it are often caked with debris.
The Right Way to Clean Multi-Row Condenser Coils
So, what should maintenance staff do when faced with multi-row condenser coils? Here’s a step-by-step guide:
- Clean from the Inside Out: Instead of cleaning from the outside in, start by removing the cover of the unit so you can access the inside.
- Split the Coils: Carefully slide the coils apart to gain access to each section. Coils will only split from one side of the unit. Be cautious to not pull them too far apart. NOTE: Pull them apart just enough to allow you space to spray them and allow the build up to fall out between the coils.
- Prevent Coil Sagging: Use a temporary support to prevent the coil from sagging, which could damage the copper pipes and potentially cause refrigerant leaks.
- Thorough Cleaning: Once the coils are properly spread, spray them thoroughly to remove all build-up. This will allow debris to fall out between the coils.
- Reassemble: Push the coils back into place carefully and reinstall the cover of the unit.
The Science Behind Commercial Coil Cleaning
Coils are integral to the heat exchange process in HVAC systems. When condenser coils are dirty, the heat transfer process becomes less efficient. This inefficiency forces the system to work harder to achieve the desired temperature, leading to higher energy consumption and increased operational costs. Clean coils allow for better heat dissipation, resulting in a more efficient system and lower utility bills.
Additional Tips for Effective Coil Cleaning
- Use the Right Tools: Employ soft brushes and low-pressure water to avoid damaging the coils.
- Pick The Right Chemical: According to an article by EVAPCO “Acid cleaners are unsafe for workers, destructive to coils and other components, and not environmentally friendly. A biodegradable, alkaline coil cleaner with a foaming component is an alternative. Also, EPA-registered mold and mildew inhibitors that contain any growth and improve indoor air quality can be used to treat indoor coils after cleaning.”
- Check for Damage: Regularly inspect coils for signs of wear or damage and address any issues.
- Schedule Regular Maintenance: Establish a routine maintenance schedule to ensure you clean coils regularly, preventing excessive build-up and maintaining system efficiency.
Why Proper Coil Cleaning Matters
Proper coil cleaning is crucial for maintaining the performance and longevity of HVAC systems. Clean coils improve airflow, enhance heat transfer, and reduce energy consumption, leading to lower operational costs and a more efficient system. Additionally, a well-maintained HVAC system experiences fewer breakdowns and requires fewer repairs, resulting in long-term savings.
Environmental Benefits of Commercial Coil Cleaning
Properly maintained coils not only improve system efficiency but also have a positive environmental impact. An efficient HVAC system consumes less energy, reducing the carbon footprint of a commercial building. Regular coil cleaning is a simple yet effective way to contribute to environmental sustainability.
Enhancing System Longevity and Performance
A clean coil ensures optimal heat exchange, which is crucial for maintaining consistent temperatures and reducing the risk of overheating. This not only prolongs the life of the HVAC system but also ensures more reliable performance, minimizing unexpected breakdowns and costly repairs. Proper maintenance extends the life of your equipment, providing a better return on investment and ensuring continuous, efficient operation.
Regular commercial coil cleaning can also help identify potential issues early. During cleaning, technicians can inspect coils for signs of damage or wear and take preventative measures to address these issues before they escalate. This proactive approach can prevent minor problems from turning into major, expensive repairs.
By investing in routine coil cleaning, you ensure that your HVAC system remains in top condition. Proper coil maintenance is a key factor in achieving long-term efficiency and cost savings for commercial and industrial HVAC systems. Reach out to us via email at sales@rasmech.com or give us a call at 800-237-3154 with questions.
