How Long Does the AC Need to be Upright Before Use?

AC Need

The AC, or air conditioning unit, is a vital appliance during hot weather. It helps cool the temperature in our homes and offices, providing us with much-needed comfort during summertime.

However, when purchasing an AC unit, one question that often comes to mind is how long it needs to be upright before use. The answer to this question depends on several factors, such as the type of AC unit you have, its installation process, and the manufacturer’s recommendations. Seeking professional help for AC installation in Rosemount can be helpful as they will be able to do the job properly and provide you with the necessary information for maintaining your AC unit. Let’s explore the factors that determine how long you should keep your AC upright before use.

Type of AC Unit

There are different types of AC units, such as window AC, split AC, and portable AC. Each type has its own installation process and requirements. For example, a window AC needs to be mounted on a window frame with proper support, while a split AC requires an outdoor unit for the compressor and an indoor unit for air circulation. The type of unit you have will determine how long it needs to be upright before use.

Installation Process

Proper installation is crucial for the efficient functioning of your AC unit. If not installed correctly, it can cause damage to the unit or even pose a safety risk. That’s why it’s essential to follow the manufacturer’s instructions or seek professional help for installation. The installation process can take anywhere from a few hours to a day, depending on the type and complexity of the unit. After installation, the AC needs to be upright for some time before use to allow any refrigerant fluid that may have settled during transportation to flow back into place.

Manufacturer’s Recommendations

It is always recommended to follow the manufacturer’s guidelines for your specific AC unit model in order to avoid crucial mistakes during AC installation and prolonged downtime. These recommendations may include how long the unit needs to be upright before use, which can vary based on factors like the type and size of the unit. Some manufacturers recommend up to 24 hours for their units to properly settle before turning them on.

In general, it is safe to keep your AC upright for at least 12 hours before use, but following manufacturer recommendations is always best.


AC units are a significant investment, and proper care should be taken during installation and maintenance to ensure their longevity. It is recommended that you seek professional help installing and maintaining your AC unit. Additionally, it is crucial to follow the manufacturer’s guidelines for how long the unit needs to be upright before use. This will not only ensure better functioning of the unit but also prevent any potential damage or safety hazards. Remember, taking good care of your AC will keep you comfortable during hot weather and save you from costly repairs in the future.