Can I use a tarp to cover my air conditioner?

Author: Meggie Kertzmann  |  Last update: Saturday, June 20, 2026

When covering an AC unit, it is essential that you only cover the top part of it to prevent snow, ice and debris from getting inside. Covering it with plastic or a tarp is perfectly fine. However, you don't want to let the plastic hang down more than 6 inches or so over the side of the unit.

What can I use to cover my air conditioner?

Plastic is bad. Try commercial-grade vinyl or high-quality polyester. For these people, they cannot pull the cover all the way down to the ground. Halfway would be best. The best covers are mesh air conditioner covers. They can be left on while the unit is running and protects from leaves and the elements.

Is it a good idea to cover your outside AC unit?

If you're considering covering your outside AC unit in the summer, whether to protect it from bad weather or to possibly save energy, the reality is that you should never cover your AC unit – not even during bad weather. For one thing, outdoor AC units are specifically designed to live outdoors.

How do I protect my air conditioner from direct sunlight?

How to Shade Your Outdoor AC Unit
  1. Build a Simple Frame. ...
  2. Attach a Shade Cloth. ...
  3. Create an AC Unit Cover. ...
  4. Plant Trees. ...
  5. Install a Trellis. ...
  6. Design a Latticework Wall. ...
  7. Where You Install the AC Unit Matters. ...
  8. Paint Your AC Unit a Light Color.

Does wetting outside an AC unit help?

While it doesn't make the A/C work better ( unless it is falling on the condenser ) it will lower the heat gain from outside ambient. Areas receiving direct sun will have surface temperature often 60 F above ambient. Wetting the outside surface will remove that excessive heat no matter what insulation is used.

Air Conditioner Maintenance - Do I Need to Cover My Air Conditioner in the Winter?

Should I hose down my outside AC unit?

You should absolutely hose down your air conditioner if you have the means to do so. After all, the condenser's main job is to pull in air and cool it off, so when it “pulls,” it also drags anything loose with it, including pollen, grass clippings, and dirt.

Can I spray my outside AC unit with water while running?

Yes, spraying water on your air conditioner while running is okay. Don't panic! To run efficiently, the condenser unit of your AC needs occasional spraying to remove dirt, grass chips, and other debris to keep it running efficiently.

Can I cover my outside AC unit in the summer?

You should never cover your outdoor air conditioning unit during the summer when it's in peak use. While some think this will help protect the unit or lead to energy savings, it will do neither.

Should I cover my AC unit from rain?

While AC covers are readily available, adding a cover to your AC unit or outdoor heat pump isn't necessary to protect your home's heating and cooling systems. This equipment is designed to withstand snow, rain, dirt, debris, and cold temperatures throughout the spring, summer, fall, and winter.

What happens if you cover an AC unit?

The unit needs unrestricted airflow in order to function properly, and adding barriers can impede the airflow and reduce its efficiency. Additionally, placing anything on top of the unit can potentially cause damage or disrupt the balance of the unit, leading to costly repairs.

How to protect an AC outdoor unit?

To protect the unit from direct sunlight, you can add an extra layer of shade with tarps. Sun shades and awnings also work well as a barrier against other outdoor hazards like snow, rain, and debris. They serve as a barrier, keeping out leaves, branches, and other materials that might damage the appliance.

Should I put a mesh cover on my air conditioner?

Plastic or vinyl covers impede air, which could cause moisture to build up inside your air conditioner. The best type of clot is one that's breathable, like canvas or mesh.

Should you tarp your AC?

Though the units are certainly tested to withstand icy conditions, excessive snow and ice can be damaging to the coils over time. One thing to keep in mind is that any type of plastic or airflow-restrictive covering will actually promote rusting and internal moisture damage, and therefore should never be used.

Is it safe to cover an AC outdoor unit?

No, you should not cover your outdoor AC unit when it's raining. You may reach for the umbrella when the rain starts to fall, but your AC unit was designed to withstand most elements of nature. The exterior case of the unit will not break down or malfunction in any way when covered in the pouring rain.

Can you cover up an outside AC unit?

While covers for air conditioners could offer some ability to protect the unit over the winter, covering an air conditioning unit generally will lead to more harm than good. AC unit equipment can actually sustain damage due to the use of covers.

What outside temperature is too hot for air conditioner?

Ideally, the AC unit should cool your home when the temperatures get high. However, when the outdoor temperature reaches 95 F to 100 F, the unit starts getting overworked, and this can cause problems. Your air conditioner might also start malfunctioning, as it is overworking and consuming a lot of energy.

How to shade an outdoor air conditioning unit?

Plant at least two or three trees on the side of your house where your AC is located. For example, a six- to the eight-foot-tall deciduous tree will provide shade for your unit within a year of planting it. Plant a series of low-growing bushes and shrubs around the condenser, but not too close.

Should you cover your air conditioner from the sun?

In short, you should never cover your outdoor AC unit. It invites further problems, and it does nothing to protect a unit that already does a good job of protecting itself.

Can I put an awning over my AC unit?

"No, this is NOT a good idea. The heat gets extracted from the refrigerant, blowing hot air up out the unit, then it comes back down into the sides making it harder to cool the refrigerant down. This will only make it worse.”

Does wetting outside AC unit help?

So how do you clean your outside AC unit? The good news is that you absolutely can spray water on your air conditioner if it needs a cleaning, and nothing bad will happen. Spraying water on your AC's condenser also helps it run more efficiently.

Why is AC not blowing cold air?

First, check your filters and coils for dirt and debris that may be impeding airflow. Once you've cleaned the filters and coils, run the air conditioner with just the fan so that the ice accumulation can melt off. If the AC still doesn't blow cold air, it could be that refrigerant levels are too low.

Can you hose down an outside air conditioner?

​Yes, you can hose down your ac unit. In fact, spraying water on your air conditioner to clear dirt and other debris, along with a regular/preventative maintenance plan can help keep your air conditioner unit running more efficiently.

Previous article
Does vinegar fade clothing?
Next article
Which must be clean and rinse but not sanitized: walls, stockpots, utensils, glasses?