Nu-Calgon offers a complete line of dependable chemical products for refrigeration, air conditioning, and heating systems. Previously a part of Calgon, and now owned by Al Butler, Nu-Calgon offers 70-plus years of experience as a leader in the HVAC/R aftermarket. All Nu-Calgon products are distributed from its warehouse in St. Louis, Missouri. Some of the most popular items sold by Nu-Calgon are refrigeration oils, coil and air cleaners, purifiers, and sealants. Nu-Calgon also carries freeze-protected leak detectors that are reliable enough to quickly locate micro and gas leaks in refrigerants, oxygen, or natural gas. Our convenient filters allow you to sort your options by size, capacity, and other variables to find the right match for your application. Find Nu-Calgon products at F.W. Webb that are perfect for cleaning and monitoring any HVAC/R system.