SITE BITE: Fixing Misinstalled Chilled Water Coils.
Join us on-site with Stephen Barzelatto, VP of Nationwide Coils, as he uncovers and rectifies improperly installed chilled water coils.
Recently, I conducted an inspection of six chilled water coils destined for replacement at a prominent hospital in Florida. As I began assessing the coils, I was taken aback to find out that the original installer had mistakenly purchased and installed six left-handed coils. In reality, three of these coils should have been right-handed models.

It's critical to emphasize just how vital it is to install the correct type of coil properly, especially in our current climate where efficient HVAC performance is non-negotiable. And let's not forget, this was a hospital—where reliability is paramount. Having the wrong coil orientation not only diminishes the unit's capacity but also negatively impacts indoor air quality. An error of this nature can result in a 2-3% drop in efficiency per row of the chilled water coil. For this particular six-row coil setup, that meant a potential 15% reduction in efficiency. Over time, such inefficiencies lead to decreased system capacity, higher operational costs, and a less effective HVAC system overall.
Luckily, I caught this mistake during my assessment and ensured that the appropriate replacement coils were installed correctly at the hospital. It's yet another example of why partnering with a seasoned commercial coil provider like Nationwide Coils is so important. We guarantee that you receive the exact direct replacement coil every single time, allowing you to concentrate on the installation process without worrying about compatibility issues.
Written by: Stephen Barzelatto
Vice President, Nationwide Coils
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