Pros and cons

Leaks aren’t as common as they once were, but professionals still debate the value of using leak-stop agents in refrigeration and air conditioning systems.

“Some contractors have used them successfully for years and consider them practical and cost-effective ways to seal small, hard-to-find leaks in systems. Other contractors feel strongly that only two things belong in a system: refrigerant and oil,” as recently summarized the debate.

Brian Baker, president of Custom Vac Ltd. in Winnipeg, Manitoba, Canada, said it’s unfair to lump all leak-stop products together, as some have much different formulations than others.

“It always comes down to using a trusted product,” he told “Furthermore, we all should understand these are not permanent repair products and, therefore, have limited use and specific uses. There is never a replacement for clean, dry, and tight.”

Got a leak?

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