Innocent activities that you believe are good for your air conditioning system may actually hurt it. Traditional, split systems have many components that are either housed inside or exposed to the weathering elements. If you're concerned about maintaining a quality AC system, consider these myths and what you can do as an alternative.
Covering the Outdoor Unit
Although rain and leaves might strike your outdoor unit during the fall and winter, don't be tempted to cover it. A cover might trap moisture onto the air conditioner's surfaces, which leads to rust. This enclosed area is also a haven for pests that can further damage a unit. Keep the AC uncovered year-round, and it should weather most storms.
Blocking Vents for Directed Air Flow
You might strategically block some interior vents while opening others as a way to direct more cool air into a specific room. Although this strategy does technically work, it puts added pressure on the system itself. Because it doesn't have every conduit as an air pathway, the system has a slight blockage to its normal air flow. Keep every vent open for normal operations. Parts will wear down otherwise.
Replacing the Refrigerant on a Constant Basis
Unless there's an update to your refrigerant type, there's no need to replace it on a frequent basis. The system may require a recharge at some point, however, this is a rare occurrence.
The air conditioning may turn on without any problems over a few years, but that fact doesn't mean it doesn't require a professional's care. Contact professionals at least once a year so they can give the entire system a good evaluation. Take care of the air conditioning, and it will take care of you in return.
How to Maintain an Air Conditioner, home.howstuffworks.com
Should I Cover My A/C in Cold Weather?, angieslist.com