
Propane fuel tanks can be buried underground, and there are several benefits to doing so. Underground tanks are generally safer, more secure, and less susceptible to vandalism or vehicle collisions. They are also better protected from extreme weather and temperature changes, which can damage the tank and impact how much propane gas the tank can hold. Additionally, underground tanks provide more space and have a reduced visual impact on the property. However, there are strict rules and regulations for installing underground propane tanks, and the process can be more complex and costly. It is illegal to install a propane tank designed for above-ground use underground, and certain permits may be required. The size of the tank and the location of the installation must also be carefully considered.
| Characteristics | Values |
|---|---|
| Safety | Underground propane tanks are considered safer as they are less exposed to extreme weather conditions and temperature changes, and there is a reduced risk of fire or explosions. |
| Security | Underground tanks are more secure and less susceptible to vandalism or vehicle collisions. |
| Aesthetics | Underground tanks are less noticeable and do not impact a property's curb appeal. |
| Installation | Installation must be done by a licensed professional and can be more complex and costly. |
| Lifespan | Underground tanks typically last between 20 to 30 years, with some sources claiming up to 40 years. |
| Cost | The average estimated cost of an underground tank is between $1,500 and $5,000. |
| Size | Tanks must be at least 500 gallons for underground placement, with some sources stating a range of 120 to 1,000 gallons. |
| Distance Requirements | Tanks must be installed at least 10 feet away from any buildings, property lines, or combustible materials, and at least 5 feet away from driveways or walkways. |
| Maintenance | Underground tanks require proper installation and maintenance to prevent issues such as floating in flood-prone areas. |
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What You'll Learn

Installation requirements and costs
Underground propane tanks have several advantages over above-ground tanks. They are protected from extreme weather, vandalism, and vehicle collisions, and they are more aesthetically pleasing as they are out of sight. However, there are several requirements and costs associated with installing an underground propane tank that you should be aware of.
Firstly, not all propane tanks can be buried. Usually, tanks must be at least 500 gallons or more for placement underground, although sometimes 250-gallon tanks can also be installed underground. The bigger the tank, the larger the hole needs to be, and you must have an adequately sized yard to accommodate the tank. Underground tanks must also be at least ten feet from the home, ten feet from the property line, and away from tree roots and driveways or roads.
Secondly, installing an underground propane tank can be more expensive than installing an above-ground tank due to the excavation process. The cost of an underground propane tank typically ranges from $2,500 to $4,500, while the installation process can add an additional $1,000 to $3,000 to the total expenses. The total cost of an underground propane tank, including installation, can range from $3,500 to $7,500. However, it's important to note that prices can vary greatly depending on service providers and locations. Some additional costs to consider include acquiring necessary permits and restoring the landscape post-installation.
Furthermore, it is illegal to install an underground propane tank yourself. Installation must be done by a licensed professional who can help determine if an underground tank is suitable for your property and find the best spot for the tank to be buried. It is crucial to ensure that your tank complies with all applicable EPA regulations and local zoning ordinances before installation.
When deciding between an above-ground and underground propane tank, consider your usage needs, personal taste, and the specific requirements and costs associated with each option.
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Safety and security
Underground propane tanks have been used for decades and have a proven safety record. There are several safety benefits to installing a propane tank underground. Firstly, propane is not harmful to soil or water, so it is safe to install in the ground. Secondly, the risk of fire or explosions is reduced. In the event of a tank leak, the surrounding soil will absorb the propane, reducing the risk of damage. Underground tanks are also less exposed to severe weather conditions and temperature changes, which can damage the tank or impact how much propane gas the tank can hold. They are also better protected from extreme weather that can cause rust, peeling, and corrosion. Underground tanks are also less susceptible to vandalism and vehicle collisions, making them a safer option for property owners in high-crime areas or near roadways.
There are, however, some important safety considerations to keep in mind. It is illegal to install a propane tank designed for above-ground use underground, and specific installation requirements must be met. Underground tanks must be installed by a licensed professional, and certain permits may be required depending on the area. Tanks must be installed at least 10 feet away from any buildings, property lines, or combustible materials, and at least 5 feet away from any driveways or walkways. Additionally, the tank must be bedded and backfilled with sand or clean fill to prevent damage to the tank coating from rocks and debris. A cathodic protection system is also vital to prevent corrosion, and all underground tanks must be installed with this feature.
To ensure safety and security, it is essential to work with a reputable propane dealer and installation professional with a proven track record and excellent reputation. This will help ensure that all safety regulations are met and that the installation is done correctly, reducing the risk of accidents or leaks. Proper installation and maintenance of an underground propane tank can provide increased safety and security compared to above-ground options.
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Aesthetics and property value
Burying a propane fuel tank underground can be a good option for those who prioritise aesthetics and property value. Above-ground propane tanks are often considered an eyesore that can reduce a property's curb appeal. Underground tanks, on the other hand, are hidden from view, with only a dome cap visible, which can be easily disguised with landscaping. This can be an attractive option for those who want to maintain the visual appeal of their property without compromising on functionality.
In addition to the visual benefits, underground propane tanks can also offer a more secure option. Above-ground tanks are susceptible to vandalism and vehicle collisions, particularly if they are located in high-crime areas or near roadways. Underground tanks are also better insulated from extreme temperatures, especially in colder climates, as they are warmed by the earth. This ensures that they continue to function effectively, even in freezing conditions.
However, it is important to consider the challenges posed by underground tanks. Firstly, not all propane tanks can be buried. Tanks typically need to be at least 500 gallons or more for underground placement, and specific installation requirements must be met. Underground tanks must be installed by licensed professionals and placed at a sufficient distance from the home, property lines, and tree roots. They also require regular maintenance of their anti-corrosion components, which can result in additional costs.
Furthermore, the installation process for underground tanks is more complex and time-consuming due to the excavation work involved. The cost of installing an underground tank can be significantly higher than that of an above-ground tank, sometimes up to three times as much. The average estimated cost of an underground tank ranges from $1,500 to $5,000, and the lifespan of these tanks is typically between 20 to 30 years, although some sources claim they can last up to 40 years.
Overall, while burying a propane fuel tank underground can enhance the aesthetics and property value by keeping the tank out of sight, it is important to carefully consider the additional requirements, costs, and maintenance associated with this option.
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Maintenance and lifespan
Underground propane tanks are more expensive to install and maintain than above-ground tanks. They are also more difficult to access for refilling and maintenance. However, they are more aesthetically pleasing, take up less space in your yard, and are less susceptible to damage from weather and pests. They are also better suited to handling extreme temperatures, particularly in colder climates.
Underground propane tanks must be installed by a licensed professional as it is illegal to do it yourself. They must also be maintained and serviced by a certified and qualified service technician. The technician will inspect and test the anti-corrosion component of the tank regularly. The frequency of inspections and maintenance depends on the type of tank.
The lifespan of an underground propane tank averages between 20 to 30 years, with some sources claiming they can last up to 40 years. The lifespan depends on the location, quality of installation, levels of maintenance provided, soil type, and whether the tank was installed properly. If installed correctly, the tank should require very little maintenance.
There are several safety considerations to keep in mind when installing an underground propane tank. Firstly, the tank must be at least 500 gallons or more for placement underground, and it must be at least ten feet from the home, ten feet from the property line, and away from any tree roots. Secondly, the tank must be properly vented to the outside and installed on a concrete slab to minimize the risk of floating. Finally, underground tanks cannot be located where a vehicle might drive over them, and they must be away from any potential ignition sources like the HVAC system or other electrical appliances.
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Environmental impact
Burying a propane fuel tank underground can have several environmental impacts, both positive and negative.
One of the main benefits of underground propane tanks is their protection from extreme weather conditions. Being buried beneath the Earth's surface, these tanks are shielded from extreme temperatures, particularly in colder climates, as they are warmed by the Earth. This enables them to function effectively even in extremely cold weather, which is an advantage over above-ground tanks. Additionally, underground tanks are less susceptible to rust, peeling, and corrosion, thanks to their burial, which further prolongs their lifespan. Underground tanks typically have a lifespan of 20 to 30 years, with some sources claiming they can last up to 40 years.
However, there are also environmental concerns associated with underground propane tanks. The installation process requires excavation and can be time-consuming, resulting in disturbances to the natural landscape. Additionally, there is a risk of underground tanks floating when the water level in the hole rises above the fuel level in the tank. While installing the tank on a concrete slab can minimize this risk, it is still a consideration in areas prone to flooding.
One of the most significant environmental impacts of underground propane tanks is the potential for leaks and groundwater contamination. Underground tanks must be properly installed and maintained to prevent corrosion and leaks. Leaking tanks can allow hazardous substances to seep into the soil and contaminate groundwater, which is a source of drinking water for many Americans. To mitigate this risk, additional protective equipment is often required, and regular inspections and testing of the anti-corrosion components are necessary, resulting in additional costs for the owner.
Furthermore, underground propane tanks require proper sacrificial anodes, such as magnesium or zinc ingots, to prevent corrosion. These anodes sacrifice themselves by wasting away, protecting the steel tank from corrosion. Without these anodes, the tank's condition while buried would be unknown, and there would be a higher risk of corrosion and potential leaks.
Overall, while underground propane tanks offer some environmental advantages, such as protection from extreme weather and reduced corrosion, there are also significant concerns about leaks and groundwater contamination. Proper installation, maintenance, and the use of protective equipment are crucial to minimizing the environmental impact of underground propane tanks.
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Frequently asked questions
Yes, you can safely bury a propane tank. However, not all propane tanks can be buried. Tanks must usually be at least 500 gallons for placement underground.
Underground tanks are more secure, reducing the chance of intentional damage or removal. They are also less susceptible to extreme weather conditions and temperature changes, which can damage the tank. Burying a tank also frees up space in your backyard and reduces the tank's visual impact.
Burying a propane tank is more labour-intensive and costly. Installation can be more complex, and there are strict rules and regulations to follow. Underground tanks are also at risk of floating, which can happen when the water level rises above the fuel level inside the tank.
You will need to dig a hole approximately 5 ft deep, 5 ft wide, and 12 ft long.
You must obtain any necessary permits for burying a propane tank. Tanks must be installed at least 10 ft away from any buildings, property lines, or combustible materials, and at least 5 ft away from any driveways or walkways. You must also ensure the tank complies with all applicable EPA regulations and local zoning ordinances.







































