AC Repair Leith

Frequently Asked Questions About AC Repair

What are the most common AC problems?

Air conditioners can experience a variety of issues, some more common than others. Here are some of the most frequent problems homeowners face:

• Refrigerant Leaks: Low refrigerant levels reduce cooling capacity and can damage the compressor. Signs include warm air, ice on lines, and hissing sounds.
• Frozen Evaporator Coil: Restricted airflow (often from a dirty air filter) can cause ice to form on the coil, hindering cooling.
• Dirty Air Filters: A clogged filter restricts airflow, reducing efficiency and potentially causing other problems.
• Faulty Capacitor: The capacitor helps start the motor. A bad capacitor can prevent the AC from turning on or cause intermittent operation.
• Compressor Problems: The compressor is the heart of the system. Issues here are serious and often require professional repair or replacement. Look for unusual noises, reduced cooling, or frequent cycling.
• Thermostat Malfunctions: An inaccurate or unresponsive thermostat can lead to inefficient cooling or prevent the system from turning on/off properly.
• Clogged Condensate Drain Line: The drain line removes condensation. If blocked, it can cause water leaks or damage to the system.

If you notice any of these problems, consult a qualified HVAC technician for diagnosis and repair.

How can I tell if my AC unit is low on refrigerant?

A few key signs indicate low refrigerant:

• Warm air blowing from vents:
If the air isn't cool, low refrigerant is a likely culprit.
• Ice formation:
Freezing on the refrigerant lines or outdoor unit signals a pressure drop caused by leaks.
• Hissing or bubbling sounds:
These noises can indicate escaping refrigerant.
• Increased energy bills:
The system strains to cool with less refrigerant, using more energy.

Never attempt to add refrigerant yourself. Consult a licensed HVAC technician.

How often should I replace my AC filter?

Replacing your AC filter regularly is essential for both air quality and system efficiency. A general guideline is to change or clean your filter every 1-3 months. However, consider changing it more frequently (monthly) if:

• You have pets.
• You or your family members suffer from allergies or respiratory issues.
• You live in a dusty or polluted environment.
• You use your AC frequently.

Regular filter changes optimize performance and indoor air quality. Consult your system's manual or an HVAC professional for optimal recommendations.

What is the difference between a central AC and a heat pump?

The key difference between a central AC and a heat pump lies in their functionality. A central AC system only cools, relying on a separate furnace for heating during colder months. A heat pump, on the other hand, provides both heating and cooling. It can extract heat from the outdoor air even in relatively cold temperatures (down to a certain point), providing efficient heating. In summer, it reverses the process to cool your home. Heat pumps are often a more energy-efficient choice than a separate AC and furnace, especially in mild to moderate climates.