Proper refrigerant levels are essential for maintaining peak cooling performance and preventing issues caused by low refrigerant levels. In this post, Superior Air explores why HVAC technicians check refrigerant levels, their methods for doing so and the consequences of running an AC system with low refrigerant.
The Importance of Refrigerant Levels
Refrigerant is the lifeblood of an air conditioning system. It is responsible for absorbing heat from indoor air and dissipating it outside, creating a cooling effect within the living space. If the refrigerant levels are inadequate, the AC’s cooling efficiency is compromised, leading to several adverse effects.
- Reduced Cooling Capacity: Low refrigerant levels hinder the AC’s ability to absorb and transfer heat effectively, resulting in diminished cooling performance. The AC will struggle to maintain the desired indoor temperature, leading to discomfort on hot days.
- Increased Energy Consumption: An air conditioner with low refrigerant must work harder and run for longer periods to achieve the desired cooling level. This prolonged operation increases energy consumption and leads to higher utility bills.
- Compressor Overheating: Inadequate refrigerant can cause the compressor to overheat due to an increased workload. A compressor failure may even render the entire AC unit inoperative.
Methods Used by HVAC Technicians to Check Refrigerant Levels
HVAC experts use various methods to accurately assess refrigerant levels. Here are two primary techniques used for assessing refrigerant levels.
- Pressure Measurements
Technicians use pressure gauges to measure the refrigerant’s high and low side pressures. By comparing these readings against manufacturer specifications, they can determine if the refrigerant level is within the appropriate range.
- Subcooling and Superheating
HVAC techs also use subcooling and superheat calculations to evaluate the refrigerant charge. Subcooling measures the temperature difference between the liquid refrigerant and the saturation temperature, while superheating assesses the temperature difference between the refrigerant vapor and the saturation temperature. These values provide insights into the refrigerant’s state and help determine if it is undercharged or overcharged.
Consequences of Running an AC System With Low Refrigerant
Operating an air conditioner with low refrigerant levels can lead to issues that affect both the AC unit and the overall comfort of your home.
- Reduced Lifespan: Running an AC with low refrigerant forces the system to work harder, leading to increased wear and tear on components. This can significantly shorten the AC unit’s lifespan, leading to premature failure.
- Icing and Coil Damage: Low refrigerant levels can cause the evaporator coil to freeze, reducing the airflow and further hindering cooling efficiency. Additionally, the formation of ice on the coil can cause damage over time and necessitate expensive repairs.
- Environmental Impact: Low refrigerant levels may indicate a refrigerant leak. Refrigerants are potent greenhouse gases that can harm the environment if released into the atmosphere. Identifying and repairing leaks promptly is crucial to minimizing environmental impact.
Work With a Professional HVAC Specialist
For all your HVAC needs, turn to Superior Air. We can assist with air conditioning installation, air conditioning repairs or any related HVAC services. We’ll ensure your system is perfectly set up for optimum performance. Call (559) 734-2002 or complete our contact form to book a consultation.
