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I was told my coil had become restricted and I needed to replace it. Instead of getting a like coil from the warranty I decide to upgrade to a "better" model. The warranty company paid some of the cost and I paid the rest.
When the install team came they had to call back to the manager because the new coil would not fit. Compared to the original it was about 3 feet longer. I suspect that the home builder did not install the correct coil for my 5 ton system. At any rate the manager told the installer to cut the dividing area (plenum?) to shorten the space so the unit would fit.
The new coil is installed and appears to work better than the other unit as my system has started to cycle again during the heat of the day. Originally my a/c would run from about 2 pm to 9pm without shutting off while trying to maintain 77 degrees.
The problem is that I started to hear a loud thumping noise so I looked at the install. The coil is right up against a support beam that runs to the peak of my roof. After it settled in (and the install crew left) it began to vibrate and was beating against the beam. In the attic you can't hear it but in the house it's very loud.
The coil is strapped to the beam to support the very end. There are more straps to other beams to hold the unit but this new strap was installed because of how much longer the new unit is. I think my other unit was a few feet from this beam so this strap wasn't needed.
I "fixed" the problem by wedging a rag in between the end of the coil and the beam. This dampens the vibration. However I worry about the quality of this install. Specifically I worry it could damage the house in some way, which is probably a silly notion. To be honest the only way to avoid this problem would have been to pull everything in the attic and shift it all to the right a few feet, which would have been a huge project. I didn't want to bring this up until I was sure if I should be worried.
When the install team came they had to call back to the manager because the new coil would not fit. Compared to the original it was about 3 feet longer. I suspect that the home builder did not install the correct coil for my 5 ton system. At any rate the manager told the installer to cut the dividing area (plenum?) to shorten the space so the unit would fit.
The new coil is installed and appears to work better than the other unit as my system has started to cycle again during the heat of the day. Originally my a/c would run from about 2 pm to 9pm without shutting off while trying to maintain 77 degrees.
The problem is that I started to hear a loud thumping noise so I looked at the install. The coil is right up against a support beam that runs to the peak of my roof. After it settled in (and the install crew left) it began to vibrate and was beating against the beam. In the attic you can't hear it but in the house it's very loud.
The coil is strapped to the beam to support the very end. There are more straps to other beams to hold the unit but this new strap was installed because of how much longer the new unit is. I think my other unit was a few feet from this beam so this strap wasn't needed.
I "fixed" the problem by wedging a rag in between the end of the coil and the beam. This dampens the vibration. However I worry about the quality of this install. Specifically I worry it could damage the house in some way, which is probably a silly notion. To be honest the only way to avoid this problem would have been to pull everything in the attic and shift it all to the right a few feet, which would have been a huge project. I didn't want to bring this up until I was sure if I should be worried.
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