Like with many A/C problems that pop up, there is a a long term solution. A brick on top of the Condenser Fan Motor to keep the noise down is not one of them. (See attached picture). If your outdoor unit is making a loud and or unusual noise it is not normal. The HVAC Condensing unit is telling you it needs immediate help! The brick may help the problem temporarily, but the problem will still exist and will eventually cause a small problem to grow into a very large problem!
You will need a licensed Air Conditioning Contractor to make this repair, by diagnosing the root cause of the HVAC problem and making a correct long term repair! If a problem like this goes unattended it can damage many components in the air conditioning condenser unit.
Call 405-618-2247 or 405-618-2AIR for assistance if you live in Eastern Oklahoma County. We at A.I.R. would enjoy helping you solve this problem and solve any other HVAC problems you may have for your home or business.
Air-Conditioning Installation and Repair, LLC