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Underground Propane Tank Pros and Cons

Underground Propane Tank Pros and Cons

An underground propane tank can be a great option if you use 600 gallons of propane (or more) per year but what exactly are its pros and cons? 

This article spells out the most profound underground propane tank pros and cons that you should be aware of before buying/leasing one.

By the end of the analysis, you will hopefully be many steps closer to making a more informed final decision!

Underground Propane Tank Pros and Cons

If you’ve been having thoughts about installing an underground propane tank, then these are the positives and negatives you will want to take into account, starting with the advantages.

Pros of an underground propane tank

There’s a great deal to love about below ground propane gas tank.

If there weren’t, folks wouldn’t be installing them at the rate they’re (the most popular size among homeowners is the 500 gal. tank).

Here are some of the most prominent underground propane tank pros:

·        It is not an unsightly eyesore

The greatest con with above ground tanks is that they are often an eyesore (or worse) unless you go the extra step of disguising it in your yard (at an extra cost!).

On the contrary, your underground tank will be buried below the ground so it is not visible except for a small dome (to allow access to the valves, filling port, and regulators for service).

In fact, there is only minimal excavation to be done meaning you’ll do little damage to the yard.

Plus, you can landscape the area around the tank creatively to hide the dome so your yard will be looking more immaculate with this option.

This is not a point you can take lightly- underground propane tanks sometimes make the price of properties to hike.

·        It is more resistant to elements

Compared to underground tanks, above ground tanks are more easily damaged because they are exposed to extreme weather conditions and other kinds of elements.

In contrast, the installation of underground tanks involves the addition of several protective measures.

These include:

  • Special coating– underground propane tanks are specially coated to prevent premature corrosion and rusting.
  • Cathodic protection– on top of the coating, sacrificial anodes (a form of cathodic protection where two/more metals encased in bags  corrodes away instead of the tank) are attached to all underground propane tanks prior to installation to further prevent rusting and corrosion.

Do not forget that the tank is already protected (by the virtue of being buried underneath the earth) from various elements that easily harm above ground tanks.

Additionally, an underground propane tank is somewhat of a safer bet when it comes to dangers such as a propane leak since leakages are in a general sense restrained by the soil.

In a nutshell, an underground tank could last longer than its above ground counterpart – remember that it cannot be hit by falling trees and is furthermore more difficult to vandalize.

·        It is more efficient in colder climates

If you live in an area where average temperatures are often very chilly, it best to go for an underground propane tank.

The reason is obvious: The tank is buried in warm earth so it is unlikely to be affected by drastic drops in temperature. Subsequently, the tank continues to function efficiently even in chillier climates.

Underground propane tank problems

Turning to the other side of the coin, there are a few major downsides you need to have knowledge of as you weigh your options.

·        It can “float” under flooding conditions

One of the most serious drawbacks associated with buried propane tanks is the risk of “floating”.

Admittedly, it not a normal occurrence but there is no denying that the tank can “float” underground if the water (in the pit) rises above the current propane level (in your tank).

How to check propane level in large tank

This could especially be an issue for those who live in areas prone to flooding.

But on a more positive note, this is a hiccup you can avoid by ensuring that the tank is installed on a firm foundation and then properly secured to stop it from moving.

·        It may lead to unique safety challenges

While underground propane tanks have proved very safe to use over the years, they bring several unique safety challenges.

For instance, detecting a leakage takes more effort than for above ground tanks.

Secondly, natural pressures underground can make it warp over time. 

The good news is that regular inspection can help you identify such problems before they cause damage.

·        It’s more costly to install

The other notable concern (it’s not a problem per se) is the installation cost.

Now, it generally does cost more money to install a below ground propane tank than an above ground container.

If you’re wondering what inflates the cost, here is a brief explanation:

You see, for safe and efficient use, underground propane tanks require more labor and equipment (recall there’s some excavation involved) and extra procedures.

Convert regulator from natural gas to propane

For example, you need to pay for the previously mentioned anti-corrosion protective features.

Additionally, there are some permits to be paid for- the amount depending on your local code. 

All these come at an extra cost to the homeowner.

So, how big is the cost difference?

Well, it varies from locality to locality (safety regulations and codes differ and they influence the cost) but you could pay more than double the cost of an above ground propane tank!

Of course, one can argue that it’s all worth it if you critically evaluate all the discussed underground propane tank pros and cons.

How to run propane line from tank to house

In summary, the main underground propane tank pros and cons are:

On the side of upsides, it increases your backyards curb appeal, withstand the elements better, and functions more efficiently when it comes to areas with colder climates.

On the other hand, its major weaknesses are the higher installation cost, the likelihood of “floating” if inappropriately installed, and the issue of probable peculiar safety troubles.

Needless to say, your local propane provider can help you choose between an above ground and underground propane tank regulations if you’re still seated on the fence even after reading this analysis.

Propane smell but no leak

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