RectorSeal AC Leak Freeze 45312 Leak Sealant, Easy Application, HVAC, 1.5 oz.

I couple of different A/C business owners, I know, suggested this for small leaks on the house system. I just recently bought some more, since I needed to add freon to my system. The original same product has been in my system for 12+ years. I've never had any problems due to this product being in my A/C system. The A/C owner/personal friend of mine suggested using a paint gun to push the plunger in on this product and it certainly did make it a lot easier to get it in the system. Also I would recommend installing this product while the system is low on freon, before topping off the system. It should make it easier to get the product in the system.

It seals the crack, more time to evaluate needed though. Only two weeks since applied

This works great if you're a professional and know how to use it. The syringe way is only if the system has zero ps or is in a vacuum. When trying to add when system has a charge I would fill my hoses and burp them. If you don't know what your doing as a homeowner you can screw your system up, non condensables are not your friend.

Need to be careful when applying but works

Very difficult to use / inject even with caulking gun (pressure within specified limits). Leaking when injecting at the joint of the syringe and adapter. Did not work.

Super para ahorrar diferido en nevera nueva, buena opción

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I used this in my home air conditioning system. I had hope, based on someone saying that it fixed their leak of about a pound a day. Mine leaked about a pound every 2-3 weeks. Putting it in was pretty easy. Some reported having to use a caulking gun or not being able to force the stuff in because of the pressure in the lines and for that reason, I followed the instructions on the product, which said to lower the suction pressure by valving off the high side coming out of the compressor unit. So that's exactly what I did. I valved off the high side and let the compressor run until the suction pressure was around 15-20 psi. I put the charging tube on the syringe of blue goo, pushed the plunger until all the air was pushed out of the tube, then disconnected the gauge, attached the tube to the low side port, and it was no trouble at all to push the product into the system using only hand pressure. Undid the charging tube, opened the high side valve, hooked up the gauges, topped off the refrigerant, and hoped for the best. Unfortunately, it still leaks about the same as before. I guess it was worth a try, but I see no difference in the rate of leakage.

the worst of the kind ive tryed , im a proffessional