Based on our experience, we’ve compiled the following recommendations to ensure a successful air handling unit refurbishment:
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Based on our experience, we’ve compiled the following recommendations to ensure a successful air handling unit refurbishment:
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Condensate water will always find its way to where you least want it. Don't just cover over failed coatings and retrofitted pans & floors. Remove them first to expose the original substrate and avoid premature leaks through your refurbished surfaces.
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No single product will solve all of your problems. Different surfaces within your air handler have different requirements and it is critical to identify the right product. Ensure these products comply with the requirements of NFPA, ASHRAE and the EPA.
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"Out of sight, out of mind" does not apply to air handling unit refurbishment. Address those areas that are not easily accessed (like under cooling coils) as they are the most likely source of damaging water leaks and pathogenic biological agents.
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Condensate drain traps that are improperly configured or absent are a common cause of standing water issues within air handlers. Ensure that all traps are properly configured for the static pressure and pay special attention to negative pressure units.
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Take the proper steps to prepare for your refurbishment project. Seal the air handler and utilize air scrubbers to protect building occupants. Lockout or remove energy sources and utilize the appropriate protective gear to protect refurbishment technicians.
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