Are Sealants an Effective Solution to AC Coolant Leaks?

Refrigerant Leak Repair

Refrigerant  Leak RepairYour AC may have a low refrigerant level if it was undercharged at installation or there is a leak. A leak will have consequences that include reduced system efficiency, increased power consumption, higher costs, and environmental pollution. It is, therefore, important to test your system regularly and fix refrigerant leaks immediately.

If you have a coolant leak, some heating and cooling technicians may offer a leak sealant. But is a coolant leak sealant an effective solution? All Hours Plumbing and HVAC provides some helpful insights.

Sealants seep out of leaks then solidify and seal upon contact with air. Contractors consider using sealants as a practical and cost-effective way of dealing with small and hard-to-find holes and cracks in HVAC systems. Sealants may also be an option in remote locations, as well as emergencies.

Other contractors are against the use of leak-stop products. These professionals regard sealants as a short-term fix and not a long-term solution. They are also worried about sealants concealing the deterioration of components of a system, which lead to larger leaks in the future. And while leak-stop products may come in different formulations, these may lead to blocked passages and openings within systems.

Best Solution

Loss of refrigerant is usually a symptom of a mechanical problem. If your unit is losing coolant, you should ask a certified AC repair technician to perform a proper inspection of the system. If there is a refrigerant leak, the technician may recommend brazing or welding and replacement of rusted components or leaking casings. After the necessary repairs, the professional will test and recharge the system.

Your air conditioner’s refrigerant charge should be precisely what the manufacturer specified and not undercharged or overcharged. When your air conditioner is low in refrigerant (undercharged), it will lose cooling performance. If your air conditioner has a leak, merely adding some more refrigerant won’t help. An AC repair expert will need to fix any leak, test the repair, and charge the system with the correct amount of refrigerant.