Common signs that your AC unit may need repair include reduced airflow, warm air blowing from vents, unusual noises, foul odors, frequent cycling on and off, and high humidity levels indoors. If you notice any of these signs, it’s best to contact a professional HVAC technician for diagnosis and repair.

Signs that your AC unit may be low on refrigerant include reduced cooling performance, ice buildup on the evaporator coils, and hissing or bubbling noises coming from the refrigerant lines. If you suspect a refrigerant leak, it’s essential to contact a professional HVAC technician for inspection and repair.

Older AC units typically use R-22 refrigerant, which has been phased out due to its harmful effects on the ozone layer. Newer AC units use R-410A refrigerant, which is more environmentally friendly and widely available. If your AC unit uses R-22 refrigerant, it may be time to consider upgrading to a newer model.

On average, AC units last between 10 to 15 years, depending on usage, maintenance, and environmental factors. If your AC unit is nearing the end of its lifespan or experiencing frequent breakdowns, it may be time to consider replacing it with a newer, more energy-efficient model.

It’s recommended to change your air filters every 1 to 3 months, depending on factors such as filter type, household size, and indoor air quality. Regular filter changes help maintain optimal airflow and improve indoor air quality.

Yes, R-22 refrigerant, commonly known as Freon, has been discontinued due to its harmful environmental impact. The production and importation of R-22 were phased out in the United States on January 1, 2020, as part of efforts to reduce substances that deplete the ozone layer. While recycled and reclaimed R-22 can still be used for existing systems, it is recommended to upgrade to newer, more environmentally friendly refrigerants and systems.