Why Install a Tank Underground?
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Aesthetic appeal – Hides the tank from view.
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Protection – Keeps it safe from weather and external damage.
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Property value – Clean look for landscaping.
✅ Requirements for Underground Tanks
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Minimum Size – Only tanks 500 gallons or larger are usually installed underground. Smaller tanks typically stay above ground.
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Corrosion Protection – Tanks must have a special coating and anode bags to prevent rusting.
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Depth – The top of the tank must be at least 6–12 inches below ground level (depends on local code).
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Drainage – The hole must have proper drainage to avoid water accumulation around the tank.
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Clearances:
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At least 10 feet from buildings and property lines.
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Away from septic systems, wells, and electrical lines.
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Professional Installation – Must be done by a licensed propane provider for code compliance and safety.
✅ Extra Costs
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Underground installation is more expensive than above ground (due to excavation and corrosion protection).
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Requires annual inspection for safety.