A variety of issues can account for a central air system not working effectively. Sometimes it's because the equipment is old and components are wearing out. Even the original installation could be the culprit. When constructing houses, home builders sometimes instruct the heating and cooling subcontractor to install only the minimum amount of equipment required. Air conditioning repair technicians can later fix problems and can typically make adjustments for better performance.
Fixing Refrigerant Leaks
Often, technicians must add refrigerant to central air conditioners. This process is referred to as recharging. The workers check for places where the refrigerant could be leaking out and seal those spots.
Replacing Worn Components
An older unit may require some new components. Switches, valves and wiring all can eventually wear out. So can the fan motor.
If the machine is not nearing the end of its expected lifespan, homeowners probably don't want to buy a new one yet. Replacing a fan motor typically costs at least $300 and sometimes twice that much. This is still much more affordable than a new installation. Not running the AC until the motor has been replaced is imperative. Doing so could ruin the compressor. That is an expensive part to replace.
Addressing Installation Issues
Professional installation almost guarantees that the unit will not be too small or too large for the home's square footage. However, the home builder may have asked the subcontractor to include only a minimum number of return air registers. There might be only one or two in the entire house. This leads to inconsistent cooling throughout the building. The technician can schedule an appointment to add more.
Answering Questions and Providing Recommendations
After the system is operating correctly again, the technician can answer questions. Recommendations may be offered as well. For instance, these workers typically check the filter to see whether it's noticeably dirty. That indicates the household residents are not changing it often enough. A clogged filter forces the system to work harder and have longer cycles than would otherwise be the case.
When the central air conditioner isn't working as expected, homeowners can contact a repair service to diagnose the issue and fix it. This appointment is a convenient time to ask for advice on reducing energy costs and extending the system's lifespan. Afterward, the household residents enjoy the cool air and feel glad they have this appliance on excessively warm days.