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How To Properly Clean Your Heil Air Conditioner

How To Properly Clean Your Heil Air Conditioner

Discovering the proper cleaning methods for your Heil air conditioner is essential to prevent potential issues and ensure its optimal performance. In this article, we have compiled all the necessary steps for cleaning your Heil AC unit. By following these guidelines, you can effectively clean each component, maintain air quality, and identify signs that indicate when your AC requires cleaning.

Cleaning The Indoor Components

To clean the indoor parts of your Heil air conditioner, it is important to address several stages, including washing the filter mesh, rinsing the fan, cleaning the radiator and evaporator, and maintaining the drainage system.

How To Properly Clean Your Heil Air Conditioner
  1. Filter Mesh
    Start by disassembling the unit and locating the filter mesh. This mesh is usually found near the thermostat or adjacent to the air handler. Remove the filter and wash it with water, using soap if necessary. Ensure the filter is completely dry before reinstallation.
  2. Fan
    In the condenser unit, you’ll find the fan, which plays a crucial role in distilling the cooled air. If the fan is removable, detach it and soak it in soapy water for 5 to 10 minutes. For fixed fans, clean them using a brush to eliminate accumulated dirt and grease.
  3. Radiator And Evaporator
    The radiator and evaporator are vital components of your air conditioning system. While cleaning the radiator, avoid using water to prevent rust. Instead, use a bottle brush or a vacuum cleaner with a brush attachment to remove dirt and debris. For the evaporator, mix warm water with detergent and spray the solution onto it. After a few seconds, wipe the evaporator with a soft cloth.
  4. Drainage System
    Neglecting the drainage system can lead to severe issues such as leakage and unpleasant odors. To clean the drain lines, use vinegar (approximately 1/4 cup). Locate the inch-long pipe, find the access point, and remove any blockage manually while wearing protective gloves. Pour vinegar into the drain line and let it sit for 30 minutes before rinsing thoroughly with water. It is recommended to clean the drainage system every 1 to 3 months for maintenance purposes.

Cleaning The Outdoor Components

Cleaning the exterior part of your AC unit is necessary to prevent blockages and potential damage to the compressor and radiator. Follow these steps for effective cleaning:

How To Properly Clean Your Heil Air Conditioner
  1. Disconnect Power
    Before starting, ensure the power to the outdoor unit is switched off. If there is a shutoff box, fuse, or switch, turn them off. Otherwise, use the circuit breaker panel to cut off power.
  2. Remove Screws and Panels
    Using a cordless drill or screwdriver, unscrew the panels without causing any damage to the condenser fins. Carefully remove each panel one by one.
  3. Clean The Fins
    Use a soft-bristle brush or a hose with a spray nozzle to clean the condenser fins. Always brush up and down, avoiding side-to-side movements. Spray water from the top and not directly onto the fins. Afterward, apply a coil cleaner and let it sit for 10 to 15 minutes before rinsing off with a hose.

Recognizing Signs Your Heil Air Conditioner Needs Cleaning

How To Properly Clean Your Heil Air Conditioner

Regularly cleaning your Heil AC unit is crucial to prevent major issues. Here are some common signs that indicate it’s time for a cleaning:

  1. Leaks From The Internal Unit
    If you notice leaks from the internal unit, it is likely caused by a clogged drainage system. Molds, dirt, and bacteria can accumulate in the pipes, preventing proper drainage.
  2. Unpleasant Smell
    A foul odor emitted from your air conditioning unit suggests a need for cleaning. Dirty air filters can’t effectively purify the air, allowing pollutants to flow into the system. Dust-filled coils can also contribute to the unpleasant smell.
  3. Noisy Operation
    Refrigerant leaks can cause cracks in the coils, resulting in hissing, bubbling, or gurgling noises. If your AC unit becomes excessively noisy during operation, it may be a sign of a refrigerant leak.
  4. Poor Cooling
    When your air conditioner fails to cool the room despite being turned on, it could be due to clogged or blocked coils. Leaves, dirt, dust, and debris can obstruct the equipment, leading to reduced cooling efficiency.


As an HVAC system owner, it is crucial to regularly clean the indoor and outdoor components of your Heil air conditioner to prevent serious problems and maximize its performance. By following the steps outlined in this article, you can ensure a clean and efficient AC unit. Additionally, stay vigilant for signs that indicate when your air conditioner requires cleaning to maintain optimal functionality.

How To Properly Clean Your Heil Air Conditioner

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