HVAC contractors in Vancouver, BC, explain refrigerant, signs of refrigerant issues, and how to prevent them.

Burnaby, Canada - July 29, 2025 / Lambert Plumbing & Heating, LTD /

Refrigerant and Signs of Refrigerant Issues Explained

There are many essential components of an air conditioning system that keep it functioning correctly, allowing homes to remain cool and comfortable. One is refrigerant. When refrigerant levels are either too low or too high, various issues can arise, indicating the need for professional air conditioning repair. This guide to refrigerant will discuss what refrigerant does, the signs of problems, and how to help prevent refrigerant issues.

How Refrigerant Works in the AC System

Refrigerant serves as the essential heat transfer medium that makes air conditioning possible by absorbing indoor heat and releasing it outside. This specialized chemical compound continuously cycles through the AC system, changing from liquid to gas and back again. Without refrigerant, the air conditioner would simply be an expensive fan.

The refrigeration cycle begins when liquid refrigerant enters the evaporator coil inside the home, where it absorbs heat from warm indoor air and transforms into a gas. This heat absorption process creates the cooling effect. The gaseous refrigerant then travels to the outdoor compressor, where it is pressurized and sent to the condenser coil. Then, the condenser coil releases the absorbed heat to the outside air while converting the refrigerant back into liquid form. This liquid refrigerant completes the cycle by returning to the evaporator coil through an expansion valve, which reduces its pressure and temperature. 

Signs of a Refrigerant Leak or Overcharged Refrigerant 

hot at home The air conditioning system's refrigerant levels directly impact cooling performance and efficiency. Detecting problems like refrigerant leaks or overcharged refrigerant early can help homeowners save money on energy bills and repair costs. Several telltale signs indicate that the AC system has either lost refrigerant due to a leak or contains too much refrigerant from overcharging. These symptoms often overlap, making professional inspection and diagnosis essential. Signs include:

  • Warm air is blowing from the vents, or issues with cooling the home
  • Ice formation on the evaporator coil  
  • Unusual sounds such as hissing or bubbling  
  • Higher than normal electricity bills

How to Help Prevent Refrigerant Issues

refrigerantOvercharging refrigerant is typically due to DIY errors, creating excessive pressure that damages compressor components and reduces cooling efficiency. So, having a professional handle all refrigerant charging and services prevents the costly mistake of overcharging. HVAC technicians possess specialized gauges and equipment to measure precise refrigerant levels, which prevents adding more refrigerant than is needed.

On the other hand, people can help prevent a refrigerant leak with annual air conditioner maintenance performed by a professional. During scheduled AC tune-ups, technicians can thoroughly clean the evaporator and condenser coils, removing dirt buildup that can cause corrosion or damage, which can lead to refrigerant leaks. They also inspect connection points, seals, and lines for early signs of wear and check refrigerant levels during maintenance to ensure there is no refrigerant leak or danger of a leak. If issues like a refrigerant leak are found, they can be repaired before they escalate. This proactive approach helps extend the system's lifespan while maintaining optimal energy efficiency. 

About Lambert Plumbing & Heating, LTD

Lambert Plumbing & Heating, LTD has been serving the greater Vancouver area since 1977. They provide upfront pricing, 24/7 emergency service, and expertly trained technicians. Call them for air conditioner repair services in Vancouver, BC

Contact Information:

Lambert Plumbing & Heating, LTD

113 – 6741 Cariboo Road
Burnaby, BC V3N 4A3
Canada

Vince Lambert
+1 604-734-0890
https://lamberthomecomfort.com/

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