Tight houses behave differently
A well sealed newer home lets in far less outside air than an older one. That is good for your bill, but it changes the math on your air conditioner. There is less humid outside air sneaking in to be removed, so an oversized system has even less reason to run long enough to dehumidify, and short cycling shows up as a house that is cold and damp at the same time.
It also means ventilation and filtration carry more weight. In a house that barely breathes on its own, whatever is in the air stays in the air until the system removes it, so filter selection and return placement matter more than most homeowners expect.
The equipment that came with the house
Production builders install to a budget, which usually means single stage equipment, flex duct, and a system sized off a rule of thumb rather than a room by room load calculation. None of that is inherently defective, but it does mean the system was chosen to pass inspection and hit a price, not to keep a back bedroom comfortable in August.
When that original equipment finally goes, the tempting move is to swap only the outdoor unit and leave the indoor coil in place. That is usually a false economy. A mismatched coil and condenser will not deliver the efficiency printed on the box, and it can compromise the manufacturer coverage on the new equipment. We will explain the tradeoff in plain language before you decide.
Flat ground and standing water
This is old prairie. The ground is flat, it drains slowly, and parts of the Katy area have taken water before. If your outdoor unit has ever been submerged, even briefly, it should be inspected before it is energized again. Water gets into the compressor terminals, the contactor and the control board, and running it wet is how a repairable unit becomes a replacement.
The same applies to an air handler or furnace that has been standing in water. Document what you find with photographs before anything is disturbed, then call us.