HVAC Maintenance Contract: AC compressor PSI

Understanding the PSI (pounds per square inch) in your HVAC system is crucial for its efficiency and longevity. Dean from Casey Services Heating and Air delves into why monitoring the pressure within your AC compressor is an integral part of routine maintenance.

PSI in an HVAC context refers to the pressure at which the compressor is operating to circulate the refrigerant through the system. This is similar to the way tire pressure affects how a car drives. Just as you would check and adjust your tire pressure with seasonal temperature changes, the same concept applies to your HVAC system due to its sensitivity to internal and external conditions, such as the temperature inside your home, the outdoor temperature, and humidity levels.

Conditions like dirty coils or a malfunctioning fan motor can impact the system's pressures, leading to inefficiencies or damage if not corrected. This is why it's important for HVAC technicians to let the unit run for at least 15-20 minutes before measuring the pressure, ensuring they get an accurate reading.

Dean likens checking the system's pressures to a doctor checking a patient's blood pressure, as it's a good indicator of the system's overall health. High head pressure might indicate a dirty condenser coil or issues with the fan motor, while issues with the metering device could affect both suction and head pressures. Similarly, abnormal suction pressure can indicate a range of issues from refrigerant leaks to compressor problems.

During maintenance visits, technicians check these pressures against manufacturer-provided charts that specify what the readings should be under certain conditions. They also measure superheat and subcooling to ensure the system is not only functioning but also functioning efficiently.

Understanding these aspects of your HVAC system can help you appreciate the complexities of maintaining it and the importance of regular check-ups to ensure its longevity and efficiency. For more detailed insights on how to maintain your HVAC system and ensure optimal performance, visit our blog at https://caseyserviceshvac.com/blog
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0:00 Intro
0:08 What is PSI?
0:32 PSI Conditions
1:16 Suction and Head Pressures
1:48 Check Unit Specs
2:05 Outro

#HVACMaintenance #EnergyEfficiency #HomeImprovement #SystemHealth #PSIChecks

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