Return to blog overview

Propane Tanks

Everything You Need to Know About Underground Propane Tanks

Underground propane tank
For residential propane usage, there are two types of tanks: underground propane tanks and above the ground tanks. Underground propane tanks are popular among homeowners, because of their various advantages. In this in-blog post, we will take a look at underground propane tanks, covering everything from their installation process and costs to safety considerations and maintenance. Whether you are planning to install a propane tank or looking for more information on the topic, this guide will provide you with valuable insights. 

Understanding underground propane tanks 

Before delving into the specifics, let's start with a brief definition of underground propane tanks. These tanks, as the name suggests, are designed to be installed below the ground surface, offering a convenient and aesthetically pleasing solution for storing propane gas. They provide homeowners with a safe, efficient, and reliable means of accessing propane for various applications, including heating, cooking, and powering appliances. 


Underground propane tank sizes 

When considering propane tanks underground, it's essential to understand the various sizes and dimensions available to suit your specific needs. Underground propane tank sizes can vary, offering homeowners flexibility in choosing the right capacity for their propane requirements. Common sizes include the 1000-gallon, 500-gallon, and 250-gallon underground propane tanks. 

  • The 1000-gallon tank is popular for large homes or properties with high propane consumption, to ensure a supply of propane for heating, cooking, and powering appliances.  
  • The 500-gallon tank is a good fit for medium-sized homes, and offers a substantial propane capacity while requiring less space.  
  • For smaller homes or properties that have lower propane demands, we recommend the 250-gallon tank, which is a compact and efficient choice.  

Understanding the dimensions and capacity of different underground propane tank sizes enables homeowners to select the optimal option for their specific requirements.


Underground propane tank installation

Installing an underground propane tank involves several steps to guarantee safety and compliance with regulations. Here are the most important considerations for the installation process:

1. Determining Tank Size and Location:

  • Find out your propane usage needs to decide on the appropriate tank size.
  • Locate a suitable place on your property, taking into account factors such as accessibility, distance from buildings, and underground utility lines.

2. Excavation and Site Preparation:

  • Dig out the area and create a flat and stable base for the tank.
  • Ensure compliance with local regulations regarding setback distances and clearance requirements.

3. Tank Installation:

  • Place the tank into the hole, ensuring it sits straight and is supported properly.
  • Connect the necessary underground propane lines and perform pressure testing to ensure integrity.

4. Backfilling and Surface Restoration:

  • Fill the hole and compact it properly.
  • Restore the surface to its previous state, taking into account landscaping and other aesthetic factors. 

    Underground propane tank installation diagram

    Understanding the installation process of an underground tank is important for anyone interested in this energy solution. An underground propane tank installation diagram provides a clear visual representation of the installation steps and serves as a valuable resource. Besides that, our diagram illustrates the key components, placement, and connections involved in installing an underground propane tank. By following the diagram, homeowners can gain a better understanding of the process and ensure compliance with safety regulations.

Underground tank installation infographic

Underground propane tank regulations and safety 

1. Regulations: 

  • Familiarize yourself with local and state regulations governing the installation and use of underground propane tanks. 
  • Ensure compliance with setback distances from structures, property lines, and potential hazards. 
  • Get necessary permits and inspections to ensure safety standards. 

2. Safety Considerations:

  • Propane tanks underground are designed with safety in mind and undergo rigorous testing.
  • Regular inspections and maintenance are needed to keep safe and efficient operations.
  • Install appropriate safety features, such as protective fencing and emergency shut-off valves. 


Pros and cons of underground propane tanks 

 Here are some advantages and disadvantages of underground propane tanks to consider: 


  • Aesthetically pleasing as they are hidden from view. 
  • Greater protection against weather elements and potential damage. 
  • Efficient space utilization, freeing up valuable yard space.
  • Reduced risk of theft or vandalism.


  • Higher installation costs compared to above-ground tanks. 
  • Potential challenges in accessing tanks for maintenance or repairs. 
  • Limited flexibility in relocation due to excavation and site preparation requirements. 


Underground propane tank vs above ground tanks 

When deciding between an underground propane tank and an above-ground propane tank, homeowners should consider their specific needs and preferences. Same as  underground propane tanks above-ground propane tanks offer several advantages: they are typically easier to install, maintain, and access for repairs. They may be more cost-effective initially, as underground tank installations involve excavation and site preparation. Ultimately, the choice between an underground and above-ground propane tank depends on factors such as property layout, local regulations, budget, and personal preferences. You can read more about above ground tanks in our blog post.  


Underground propane tank costs 

The cost for residential underground propane tank installations can vary depending on many factors, such as tank size, installation complexity, and local labor costs. On average, the installation cost ranges from $5,000 to $10,000, excluding additional costs such as excavation, permits, and landscaping restoration. 

Underground propane tank maintenance and inspection 

To ensure that your underground propane tank remains in good conditions and will continue operating safely, regular maintenance and inspections are essential. Here are some important considerations to keep in mind: 

1. Maintenance: 

  • Plan routine maintenance checks with a qualified propane professional. 
  • Inspect tank, components, valves, and connections for signs of wear or damage. 
  • Clean the tank exterior and keep the surrounding area clear of debris. 

2. Inspection: 

  • Plan regular inspections to detect potential leaks or safety issues. 
  • Test pressure levels and conduct a leak check. 
  • Follow the manufacturer's guidelines and consult local regulations for inspection requirements.


Underground propane tank safety and best practices 

1. Safety Measures: 

  • Keep the area around the tank clear of combustible materials and vegetation. 
  • Install gas detectors and carbon monoxide alarms. 
  • Educate household members about propane safety and emergency procedures. 

2. Best Practices: 

  • Follow proper handling and storage guidelines for propane cylinders and tanks.
  • Regularly inspect propane lines for leaks or damage.
  • In case of a suspected leak or emergency, evacuate the area and contact emergency services immediately. 


Underground propane tank: Pinnacle Propane – The best choice 

When it comes to purchasing and installing an underground propane tank, Pinnacle Propane stands out as a reliable and customer-focused provider. For homes looking for the best underground propane solutions, Pinnacle Propane is the best option thanks to their vast experience, affordable prices, and dedication to quality and safety. 

Installing an residential underground propane tank offers homeowners a simple and effective solution to access propane at home. Understanding the details of underground propane tanks, from installation to maintenance and safety issues, is essential for a safe experience. Keep in mind to follow the rules and regulations, prioritize safety, and consider trusted suppliers like Pinnacle Propane for your underground propane tank needs. With proper installation and regular maintenance, you can enjoy the advantages of a reliable and cost-effective energy solution for years to come. 

Visit our website to find a propane tank installer near your place.