Selecting the right evaporator coil is crucial for the efficiency and effectiveness of your air conditioning system. As a homeowner in Philadelphia, where summers can be particularly humid and warm, it's important to understand how to match the evaporator coil with your existing system and cooling needs. Here's a guide to help you make the best choice.

Understanding Evaporator Coils

The evaporator coil is a key component of your HVAC system. It's responsible for absorbing heat from the air inside your home. As warm air passes over the cold coils, the refrigerant inside the coils absorbs the heat, cooling the air before it's circulated back into your rooms.

Factors to Consider When Choosing an Evaporator Coil

  1. System Compatibility: Ensure that the evaporator coil is compatible with your current HVAC system. Mismatched systems can reduce efficiency, increase operating costs, and lead to more frequent breakdowns.

  2. Size and Capacity: The size of the coil should match the output of your HVAC system. An undersized or oversized coil can lead to inefficiencies, such as increased energy consumption, inadequate humidity control, and uneven cooling.

  3. Material: Coils are typically made from copper, aluminum, or a combination of both. Copper coils are generally more durable and have higher thermal conductivity, but they can be more expensive and susceptible to corrosion. Aluminum coils are lighter and less prone to corrosion but might not have the same lifespan as copper.

  4. Maintenance Requirements: Consider the ease of cleaning and maintenance. Evaporator coils need regular cleaning to maintain efficiency and performance. Some designs are easier to access and clean than others.

Making the Right Choice

Before making a decision, it’s wise to consult with a professional who understands the local climate and typical house layouts in Philadelphia. Companies like McCorry Comfort can provide advice tailored to your specific needs and help ensure that your new coil works seamlessly with your existing system.


Choosing the right evaporator coil is a key decision that can affect the comfort of your Philadelphia home and the cost-effectiveness of your cooling system. By considering the compatibility, size, material, and maintenance requirements, you can ensure that your air conditioning system operates at peak efficiency and keeps your home comfortable throughout the warmer months. Don’t hesitate to reach out to HVAC professionals for guidance tailored to your unique situation and system.