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What You Need To Know About Covering Your Lennox AC

What You Need To Know About Covering Your Lennox AC

Investing in a Lennox air conditioning unit is a significant commitment, and naturally, you want to ensure it stays in top-notch condition for as long as possible. One common question that homeowners often ponder is whether they should cover their Lennox air conditioner throughout the changing seasons. To shed light on this subject, we have conducted extensive research to help you make an informed decision.

Should You Cover A Lennox Air Conditioner?

What You Need To Know About Covering Your Lennox AC

The short answer is that it’s generally unnecessary to cover your Lennox air conditioning unit year-round. However, specific circumstances may warrant consideration. For instance, if your unit is located in close proximity to trees or other sources of falling leaves, seeds, or debris, covering it partially during the fall season can be beneficial. When doing so, it’s crucial to ensure that only the top six inches of the unit are covered, allowing for proper airflow.

Covering your Lennox AC unit during the primary cooling seasons of spring and summer is not advisable. These units are equipped with built-in thermostats designed to regulate temperatures in your home. Covering them during this time can obstruct heat dissipation when it’s hot and heat absorption when it’s cold outside.

Furthermore, covering your Lennox AC unit may inadvertently invite unwanted guests. Rodents can easily crawl under the cover and establish nests, potentially damaging the unit by chewing through wires. Therefore, it’s essential to exercise caution when deciding whether to cover your air conditioner.

Winterizing Your AC Unit

Winterizing your Lennox air conditioner is a prudent step to protect it during the cold winter months. This precautionary measure helps prevent issues such as rusting, debris accumulation, and the nesting of rodents within the unit.

What You Need To Know About Covering Your Lennox AC

To winterize your Lennox air conditioner, start by turning off the primary power source and cleaning both the interior and exterior of the unit. For areas experiencing frigid temperatures, consider insulating the pipes to prevent freezing. Lastly, periodically check your unit during the winter season to remove any accumulated ice, debris, or snow.

The Consequences Of Running AC With A Cover

Running your AC with a cover on can have detrimental effects on its performance. A covered unit may experience blocked airflow, leading to additional stress and potential damage. Moisture buildup inside the unit can result in inefficiency and strain on the system, ultimately impacting its cooling capabilities.

Saving Money On AC Maintenance

To save money on your Lennox AC, budget for regular repairs and maintenance. Consider scheduling professional servicing twice a year, as this can help prevent major issues from arising. Additionally, routinely clean the air filter to ensure optimal performance.

What You Need To Know About Covering Your Lennox AC

Cleaning Your AC Unit With Vinegar

White distilled vinegar can be used to effectively clean your Lennox air conditioning system. Begin by turning off the power source and clearing any debris surrounding the unit. Pour vinegar into a spray bottle and apply it to visible components. After 15 minutes, wipe down all surfaces with a clean cloth or towel. If any debris remains, turn the unit back on and use a vacuum to remove it.

Understanding AC Lifespan

On average, a Lennox AC unit can last between 15 to 20 years, with the heat pump typically lasting 10-12 years. The actual lifespan depends on usage frequency and maintenance. Factors such as snow accumulation and rusting can contribute to premature failure.

The Safe Use Of Water On Your Air Conditioner

Spraying water on your Lennox air conditioner system is permissible, particularly in areas with high winds that can lead to debris buildup. However, ensure the unit is powered off and the source is disconnected. Using cold water for cleaning can potentially lead to coil buildup and strain on the system.

The Cost Of Air Conditioner Repairs

The cost of repairing a Lennox air conditioner varies depending on the issue and the time required for repairs. On average, annual repair costs can range from $160 to approximately $520, with an average of $336.

Common Causes Of Inadequate Cooling

If your Lennox air conditioner isn’t cooling as it should, several factors may be at play. A dirty filter can obstruct airflow and cause the unit to work harder, leading to inefficiency. Other potential culprits include issues with the compressor, blower motor, blower fan, or condenser, which may require professional diagnosis and repair.

Understanding AC Freezing

A frozen Lennox air conditioner can result from a dirty filter, a dirty evaporator coil, or low refrigerant levels. Accumulated dirt and debris can force the unit to operate harder than usual, potentially causing the coil to freeze and water to drip onto the fan blades. This can lead to fan failure and, if left unattended, overall AC failure. Additionally, low refrigerant levels can impair the unit’s ability to function efficiently.


The decision to cover your Lennox AC unit or not ultimately depends on your specific circumstances. While covering it partially during the fall season to protect against leaves and debris may be beneficial, avoid covering it completely during the primary cooling months. Ensuring proper airflow and preventing moisture buildup are essential for the longevity and efficiency of your Lennox air conditioning unit. By following the recommended maintenance practices and understanding the needs of your AC system, you can enjoy reliable and efficient cooling for years to come.

What You Need To Know About Covering Your Lennox AC

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Written by HVAC Contributor

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