Rooftop AC Unit Replacement
Well we have thrown in the towel on our old Coleman Mach unit. After reading a few articles it would appear that replacing the unit will not be all the difficult. From what I understand it basically...
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Mbiallas wrote:
Well we have thrown in the towel on our old Coleman Mach unit.
Does the Old Mach still run? We were about to sell a 24 year old Class C with a 13500 Mach on it, just to sell it. Came across Chris Bryant's article on how to clean the coils and drain. Did that, and it got its cool back.
We bought another C with a Mach 15000 on it, cleaned the coils as Chris explained in the article, also pulled the motor and cleaned the indoor blower wheel (squirrel cage). That Mach is now 15 years old.
One thing I learned recently, again Shout Out to Chris, is that the back of the unit, the condenser coil, has to have its edges sealed to the shroud with air baffles. A little hard to explain, but the air over the condenser is drawn in from behind. It can't be allowed to get some of that air from the side vents of the shroud. Easy fix with some foam insulation for copper pipe.
