GLANCE
First look at the hang tag’s general condition. If it looks old, worn or well-written-on, the system is likely still filled with legacy antifreeze, which must be replaced. A missing hang tag is a major red flag.
LOOK
Next, look at the hang tag to see if its form and content meet NFPA 25 specifications 4.1.9.1 and 4.1.9.2 (a permanently marked metal or rigid plastic information sign including location served, auxiliary drains, location of antifreeze and location of heat tape) and 4.1.10 (an antifreeze information sign indicating the manufacture type and brand, concentration by volume and volume of solution).
CHECK
Finally, confirm that the listed antifreeze used is compliant with the building’s occupancy and pipe materials. Each listed antifreeze product has a unique listing, so make sure to use the installation manual specific to the product listed on the hang tag. Most manufacturers will provide a version of the installation manual that you can download to your device to let you quickly inspect complianc
e.
Visit our Antifreeze Comparison Tool to compare listed products.
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