AC Repair Hemel Hempstead

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 is a capacitor in an AC unit, and why is it important?

A capacitor is a small, but crucial, electrical component in your air conditioner. It stores electrical energy and releases it in a burst to help start the compressor and fan motors. Without a functioning capacitor, these motors wouldn't be able to start, and your AC wouldn't be able to cool your home. Common signs of a failing capacitor include difficulty starting the AC, humming sounds from the unit, or the AC unit turning on and off frequently. If you suspect a bad capacitor, contact a qualified HVAC technician to have it replaced.

How do I choose the right size AC unit for my home?

Choosing the correct AC unit size is crucial for energy efficiency and adequate cooling. An undersized unit will run constantly, struggling to cool your home, while an oversized unit will cycle on and off frequently, wasting energy and shortening its lifespan. Factors that determine AC size include the square footage of your home, insulation levels, climate zone, window size and efficiency, number of occupants, and heat-generating appliances. Don't guess! Consult an HVAC technician to perform a Manual J load calculation to determine the precise cooling capacity your home needs.

What causes an AC unit to leak water inside?

Water leaking inside from your AC unit usually indicates a problem with the condensate drainage system. Here are some common causes:

• Clogged condensate drain line:
Algae, dust, and debris can clog the drain, causing water to back up and overflow.
• Cracked drain pan:
The pan collects condensation. A crack allows water to leak out.
• Disconnected drain line:
The line may have become disconnected from the unit or the drain.
• Frozen evaporator coil:
A coil frozen due to restricted airflow can also cause water to leak. .
• Low refrigerant:
This can cause ice to form on the evaporator coil, which then melts and leaks.

Contact a qualified HVAC technician to diagnose the issue and perform the necessary repairs. .