I like the way this site is so direct in responding. While Iím a homeowner, Iím trying to distinguish the great installers from the others. Your help to educate us is appreciated.
I'm a homeowner that hired a local company to install a new A/C. This was a Trane 5 ton unit replacing a 9 year old American Standard. Same company serviced the American Standard. The tech had a difficult time brazing a leak free joint at the evaporator. Not sure of the line sizes, but the evaporator tube was something like 1.25 inches and the line set was something around 7/8 inches. The tech didnít use a reducer coupler, but rather just used Channel Locks to crimp the large line to fit around the smaller and then attempted several times to braze the joint. He finally got it to be leak free. The odd thing was the original American Standard coil was connected the same way. However, it wasnít installed by the same company. Is this a common way to complete this joint, or are these Wall of Shame candidates?
The tech did purge lines with nitrogen. The previous system had a leak in the system and that contributed to the system being replaced. The line set wasnít replaced. Had three estimates and all said the lines didnít need to be replaced. Is that what you would have done? Iím sure there are many other variables, but approximately how long should he have ran the vacuum pump to clear the line set prior to charging the system after he installed the new condenser and evaporator?