
Keeping an air compressor outside is not generally recommended due to potential damage from dust and rain. However, with the right preparation, it is possible to keep the air compressor outdoors for extended periods.
Benefits of keeping an air compressor outside
An air compressor is an exceptionally handy piece of equipment that can be used for various projects and tasks. Keeping an air compressor outdoors can offer many benefits, such as a longer lifespan for the equipment, fewer contamination issues, and even reduced noise pollution indoors.
For most compressors, being kept in a well-ventilated outdoor space safeguards its motor from potential water damage from condensation caused by the motor’s heat. Additionally, dirt and debris are less likely to contaminate the inside of the machine if it’s kept outdoors rather than in a workshop or garage environment. This way, the internals can be properly lubricated and cooled without additional cleaning or repair requirements.
When operated indoors, many compressors may exceed noise control standards set by various jurisdictions, so keeping them outdoors also helps you avoid sound complaints from neighbors and other community members. Here are some tips on what to consider when keeping an air compressor outside:
- Invest in vinyl covers: Vinyl covers help protect the exterior surface of your compressor against corrosion associated with outdoor elements, including snow, dew, and salt spray.
- Provide adequate shelter: Place your air compressor under eaves or trees to guard it against direct sunlight or rain. Make sure it is constantly covered with a tarpaulin to prevent any possible moisture build-up over time due to inclement weather conditions such as sleet or hail storms. Also, secure the machine with straps to ensure it stays in place during storms and high winds when necessary.
- Adhere to general safety protocols: As mentioned earlier, ventilation around your air compressor is especially important when kept outdoors, along with periodic maintenance, which includes checking on regular intervals if all electrical cords are secure/in good condition/free of debris, including dust particles/etc., checking pressure readings routinely according to manufacturer instructions; greasing parts; changing oil as instructed; ensuring hoses remain properly maintained; etc.
Factors to Consider

Keeping an air compressor outdoors has its advantages and disadvantages. On the one hand, it is more accessible and can be more conveniently used for outside work, but on the other hand, it is more exposed to the elements and more difficult to maintain. Therefore, it is important to consider all factors before deciding to keep an air compressor outdoors.
Weatherproofing
Considering using an air compressor outside, it is important to factor in the weather elements that could damage the compressor. Providing adequate weatherproofing can extend your air compressor’s life and ensure it continues optimally.
To ensure that your air compressor can withstand rain and other wet conditions, consider the following:
- -Place it in an outdoor shed or structure with a sheltered roof to protect against inclement weather.
- -Ensure that all seams, corners, and connections are sealed with silicone or similar polymer sealant to keep water out.
- -Add drip trays or runoff collectors beneath areas where condensation could accumulate – such as hoses and wiring connections – to minimize corrosion.
- -Covered cowlings or protective fabric covers may be used but should generally be plastic types that are waterproof/weatherproof.
In addition, you should treat your air compressor like any other outdoor equipment and protect it from extended exposure to sunlight (UV radiation) either through temporary shade coverage during peak sun hours or by regularly applying UV protectant polishes on painted surfaces exposed to the sun.
Temperature
Temperature is a key factor when determining if you can keep an air compressor outside. For most air compressors, exposure to extended periods of cold weather without protection can cause the material they are made of to crack or become brittle. Additionally, extreme temperatures can damage the oil or lubricants used in the air compressor, leading to expensive repairs down the road.
To ensure your air compressor runs properly and lasts as long as possible, it is important to ensure it is stored in an environment with a consistent temperature. If you must store your air compressor outside in cooler temperatures, look for a model with specific features designed for outdoor use and cold weather.
If possible, try to find a spot for it under shelter, close to a wall or other overhang that provides protection from direct sunlight and precipitation.
Location

When deciding on a spot to place your air compressor, there are several factors you should consider. Location is key. Your air compressor should be placed in a dry, well-ventilated area away from direct sunlight and from areas that may contain flammable materials. If you plan to use the power supply outdoors, you will need to consider the elements and whether it can be adequately protected from the weather.
Additionally, the power supply will need to meet local building codes and zoning requirements if placed outside. It is also important to consider how close any vulnerable objects may be, as an air compressor can produce enough vibration for them to move or shake depending on their size and distance from the unit.
Finally, if noise is a concern, you may want to find an outdoor location far away from any inhabited areas as much as possible so that your neighbors are not disturbed by a loud motor or hammering sound.
Safety and Maintenance
If you are planning on keeping an air compressor outside, some important safety and maintenance considerations must be considered. Being outdoors and exposed to the elements means your compressor needs to be protected from rain, wind, and other elements to operate safely and efficiently. Moreover, depending on where your compressor is located, there may be additional maintenance considerations, such as checking for rodents or other pests or dealing with issues of temperature extremes.
Regular cleaning and maintenance

Regular cleaning and maintenance of your air compressor will help ensure trouble-free operation and extend the unit’s service life. Remember that an air compressor should never be operated with a malfunctioning component or accessory, as this can reduce its performance, increase its running time, or even cause it to malfunction.
You must visually inspect all components regularly for corrosion or any other damage. Check hoses or pressure lines for leaks – verify that the noise level is not higher than normal – and check safety features such as emergency shut-off switches.
Periodically test your air compressor’s pressure relief valves, keep all moving parts well-lubricated (as specified in the manual), and clean up any foreign debris before using.
Check the hoses every few months (or more often if you use them daily) for signs of wear and tear – replace them immediately if they are cracked, split, frayed, or any other signs of damage. If you are storing the air compressor outdoors, cover it to protect it from adverse weather conditions such as snowfall and strong sunlight.
Proper ventilation
When using an air compressor outdoors, it is important to ensure that the area you are using it in is properly ventilated. This is because air compressors create heat and require adequate ventilation. If heat buildup occurs, this can damage the compressor and reduce its efficiency. Additionally, some compressors may contain elements such as lubricating oil, which can become highly combustible when exposed to high temperatures.
When ventilating a garage or other workspace outdoors, check for ventilation requirements set by local safety codes and your compressor’s user manual. Generally speaking, extra space should be made around the air compressor to provide adequate space for ventilation, and keeping combustible objects away from the area should also be a priority.
It is also important to ensure that intake vents remain clear of debris at all times for efficient cooling or heating. Additionally, always ensure all exhaust fumes are safely vented away from flammable materials, people or animals.
Electrical safety

The main concern when using an air compressor outdoors is keeping it safe from the weather and operating it according to electrical safety standards. When plugging the air compressor in, you must use a ground fault circuit interrupter (GFCI) outlet or a GFCI-protected extension cord.
This is especially important for outdoor applications and for portable compressors. Do not use a backfeeding adapter or any other method of connecting your compressor to an outlet that the compressor manufacturer does not recommend.
It is also important to inspect all electrical cords regularly and to replace them if there is any visible damage, such as frayed insulation or broken wires. Do not use any damaged cords with your air compressor, as this could create an electrical hazard.
Additionally, never operate the air compressor with wet hands or while standing in water, and do not stand on wet surfaces while using the unit outside. If you observe any sparks coming from the electrical connections, immediately shut off power to the unit at the source.
Other Considerations
While an air compressor can typically be kept outdoors, there are some precautions and other considerations to consider. Whether it’s temperature related or the risk of theft and vandalism, there are several factors to consider when deciding whether to keep an air compressor outside or not. Let’s review them to help you make an informed decision.
Noise levels
When determining if you can keep your air compressor outside, it’s important to consider noise levels. Air compressors produce a good deal of noise, especially if they are placed near residences or other public areas. Most air compressors produce between 60 and 90 decibels, comparable to the sound of a hand drill.
To protect yourself and your neighbors from excessive or annoying noise levels, consider the following: -Choose an air compressor with lower decibel ratings -Invest in a soundproof cabinet for your compressor -Install insulation around the compressor area -Check for any local ordinance restrictions on noise before placing the compressor outside.
Cost of running an outdoor air compressor

In addition to the initial cost of purchasing an air compressor, other considerations should be considered when deciding whether to run one outside. Homeowners should consider the operating costs associated with running an outdoor air compressor. This includes electricity for powering the motor and oil as necessary for lubrication. Both of these items can add up, so it is important to factor these into your budget before committing.
Outside temperatures should also be considered since freezing temperatures can cause damage to the motor, leading to expensive repairs or replacements. Additionally, wind and rain can turn a relatively quiet machine into a noisy neighbor if it’s too near your property line—consider erecting some physical barriers such as fencing or buildings to contain sound and block wind gusts if you plan on keeping an outdoor air compressor consistently running over long periods.
Potential hazards
When storing and running an air compressor outside, consider potential hazards to the unit and other humans or animals. Air compressors maintain high pressures in the tank and while running, so they should be supervised while operational. This can be done by ensuring that all safety guards/covers are properly installed.
The environment should also be taken into consideration for any outdoor compressor. This includes temperature, moisture levels, and dust or debris collecting around or near the machine. All of these may affect the performance or lifespan of the compressor if their effects create an imbalance in heat loss from your machine.
Protection from rain is essential for outdoor air compressors to avoid moisture buildup that can lead to rust damage and electrical shorts within the unit itself. If applied correctly, a weatherproof gas-resistant air compressor paint may help reduce degradation due to direct sunlight, rain, or snow exposure. Additionally, ensuring your compressor is cleaned regularly is paramount since contamination can cause valves to stick or malfunction.
Lastly, keep in mind that leaving an electric motor running generates heat that requires proper ventilation to reduce damage further. Ensuring proper insulation around your motor helps mitigate against heat buildup that could degrade its life expectancy if left unchecked.