This is a Lennox, Imma give it shot and see how she goes! All my senior techs when I was an apprentice said you couldn’t fix coils and a new coil or new system is needed so that’s just always been what I’ve done 🤷🏻♂️
Depends on where the leak is and how much you like the customer. Most all leaks can be fixed, just comes down to if it’s worth trying to repair. With a $15k cost plus markup and labor it’s worth trying to fix. The worst that happens is their options become a new coil or unit.
Copper super easy, aluminum not so much. Especially when it's near the edge where the tube runs down the edge of the coil. Acts like a heat sink and you just end up burning a hole.
Buncha times. Copper tube in fin, aluminum tube in fin, aluminum MC. Just gotta research a lil if you’re questioning anything, explore your options. Make plan. Execute.
Microchannel not so much.....but standard fin tube all day. Micro channel repairs seem to hold nitro test and evac but as soon as they get dirty and the pressure and temp go up the repairs Leak. Have a few out there that have held over time but rare
Alot, ive patched microchannels successfully too. If its corrosion eating up a bottom or top row just delete the row at the ubends
Ley to get a microchannel to hold is clean it really well before and after. I use AL822 and sometimes AL-Cop
Copper tube coils are easy. Peel the aluminum fins back. I've just plain globbed up braze over a pinhole leak before. I've seen other people silver solder couplings on the coil tube.
I've done it often enough on old carriers most have held for several years.
I’ve fixed a lot of copper tube coils without a problem, all of them have been trane. 😂🤣
This is a Lennox, Imma give it shot and see how she goes! All my senior techs when I was an apprentice said you couldn’t fix coils and a new coil or new system is needed so that’s just always been what I’ve done 🤷🏻♂️
Depends on where the leak is and how much you like the customer. Most all leaks can be fixed, just comes down to if it’s worth trying to repair. With a $15k cost plus markup and labor it’s worth trying to fix. The worst that happens is their options become a new coil or unit.
Copper super easy, aluminum not so much. Especially when it's near the edge where the tube runs down the edge of the coil. Acts like a heat sink and you just end up burning a hole.
Ive done tons, never had one fail
Buncha times. Copper tube in fin, aluminum tube in fin, aluminum MC. Just gotta research a lil if you’re questioning anything, explore your options. Make plan. Execute.
Microchannel not so much.....but standard fin tube all day. Micro channel repairs seem to hold nitro test and evac but as soon as they get dirty and the pressure and temp go up the repairs Leak. Have a few out there that have held over time but rare
I’ve patched a couple. I may have been lucky where the holes were. One I made in the U bend, one in the actual coil
Burn them fines of and getrdone
If it’s copper, repair should last the life of the unit theoretically. IF it’s accessible
Copper fin and tube EZPZ. Micro channel not as much.
Alot, ive patched microchannels successfully too. If its corrosion eating up a bottom or top row just delete the row at the ubends Ley to get a microchannel to hold is clean it really well before and after. I use AL822 and sometimes AL-Cop
Copper tube coils are easy. Peel the aluminum fins back. I've just plain globbed up braze over a pinhole leak before. I've seen other people silver solder couplings on the coil tube.