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A system that needs a pound or two of refrigerant every spring has a leak. Most of the time it is a pinhole in an evaporator coil, a rubbed lineset, or a joint you cannot get a torch on without pulling the unit apart. You have three choices: keep charging it, replace the coil, or seal it. This artic

Xantus sells one formula in a lot of packages. The part number tells you two things: what is in the inject and how much system it treats. Here is the whole line in one place.

Every HVAC truck carries a purple primer can and a cement can that are half dried out, with a dauber that has seen better days. Xantus Lockdown replaces both with one aerosol: spray the pipe end and the fitting, push together, done.