AC Repair Witham

Frequently Asked Questions About AC Repair

What is an evaporator coil, and why is it important for my AC?

The evaporator coil is located inside your home as part of the air handler. Its job is to absorb heat from the indoor air. The refrigerant inside the coil evaporates as it absorbs heat, cooling the air that passes over it. This cooled air is then circulated throughout your home. A clean and properly functioning evaporator coil is crucial for efficient cooling. Restricted airflow (often from a dirty filter) or low refrigerant can cause it to freeze, leading to further issues.

What are the signs of a bad AC compressor?

The compressor is a vital component of your AC system, and its failure can be a major headache. Watch out for these signs of a failing compressor:

• Loud noises:
Unusual sounds like clanking, grinding, or rattling from the outdoor unit indicate potential problems with the compressor.
• Warm air from vents:
If the air from the vents isn't cool, it could mean the compressor isn't functioning properly.
• Reduced cooling capacity:
Your AC unit may be running constantly, but the house doesn't cool down as it should.
• Refrigerant leaks:
Leaks can occur at the compressor and lead to reduced cooling efficiency.
• Tripping circuit breaker:
A failing compressor can draw excess current, causing the breaker to trip repeatedly.

Don't ignore signs of a failing compressor, address them promptly.

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.

How do I reset my AC unit?

Sometimes a simple reset can resolve minor AC issues. Here's how to reset most residential AC units:1. **Turn off the AC at the thermostat:** Set it to the 'off' position.2. **Turn off power at the breaker panel:** Locate the circuit breaker that controls your AC unit and switch it to the 'off' position.3. **Wait 5-10 minutes:** This allows the system to completely power down and reset any internal electronics.4. **Turn the breaker back on:** Flip the circuit breaker back to the 'on' position.5. **Turn on the AC at the thermostat:** Set the thermostat to your desired cooling temperature. If resetting doesn't work, contact a professional HVAC repair service. DIY electrical repairs on AC units are highly discouraged.