How to Winterize Your Outdoor Air Conditioning Unit
February 15, 2024
Outdoor air conditioning unit with protective winter covering

How to Winterize Your Outdoor Air Conditioning Unit

Many people are confused about covering their AC unit in the winter and have likely heard different answers about what they should do. 

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Air Authority clears up the confusion in our blog below and shares how to winterize this equipment in today’s blog.

Should You Cover Your AC in the Winter? 

Never cover your AC unit in the winter! We advise you not to cover your unit to avoid potential issues related to moisture retention, pest infestation, and compromised performance.

A cover can create a damp environment around the unit, creating rust and corrosion. Moisture buildup compromises the internal components of the AC unit over time, causing damage that may go unnoticed until the system is used again.

Another drawback of covering the AC unit is the risk of providing a shelter for pests. Animals seeking warmth and protection may find the covered unit an attractive nesting spot, potentially damaging the unit’s wiring and components. Rodents, in particular, can cause significant harm by chewing through wires and insulation.

Most manufacturers explicitly advise against covering AC units during the winter. Following the manufacturer’s guidelines is crucial to maintaining the warranty and ensuring the equipment operates as intended. 

How Should You Winterize Your AC Unit? 

Clean and Tidy

The first step to winterizing your air conditioning unit is to clear away any leaves, dirt, or other debris from the entire unit. Disconnect the power at the circuit breaker before performing this type of maintenance. Next, use your garden hose to wash it down from top to bottom. Allow the device to air-dry completely.

Shut It Down

Now that your unit is clear, clean, and dry, it’s time to shut it off for the season. Most air conditioning units will have an independent circuit breaker. Locate the circuit breaker switch and move it to the off position. 

This step ensures that your air conditioner does not turn on accidentally, and you will be preventing water from entering the unit that could freeze and cause damage during cold winter nights.

Snug and Warm

Tubular foam or rubber pipe insulation is a great (and inexpensive) way to ensure that any exposed pipes or fittings stay nice and warm during the cold winter months. Cover all exposed pipes with tubular foam or rubber pipe. You’ll need to cut the insulation to fit your particular setup. 

Regular Maintenance

As with any equipment, you should check on your air conditioning unit periodically and make sure it is undamaged and protected. Keep the appliance clear of snow, ice, and other debris.  Check the covering for rips, tears, or movement. 

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Winterization and Maintenance by Air Authority

These winterization steps will help keep your HVAC system in good functioning order year after year. Talk to Air Authority if you have any questions or concerns regarding your outdoor air conditioning unit. Contact Air Authority online or call (513) 229-0789 for more information.

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