The Ultimate Guide: Choosing the Right Propane Tank Size for a 150,000 BTU Heater

When it comes to powering a 150,000 BTU heater, selecting the appropriate propane tank size is crucial for ensuring efficient and reliable operation. This comprehensive guide will delve into the technical details, fuel consumption rates, and practical considerations to help you make an informed decision.

Understanding Propane Consumption Rates

A 150,000 BTU heater can consume between 5.5 to 6.9 pounds of propane per hour, depending on factors such as the heater’s efficiency and the ambient temperature. This means that a 150,000 BTU heater can burn through a significant amount of propane, necessitating a tank size that can provide sufficient fuel for your heating needs.

Residential Propane Tank Sizing

what size propane tank are needed for 150000 btu heater

For residential applications, a 500-gallon propane tank is typically recommended for larger homes (2,500-4,500 square feet) that require a 150,000 BTU heater to meet their heating demands. This tank size can hold up to 400 gallons of propane when full, providing between 57 to 72 hours of continuous operation for the 150,000 BTU heater.

Commercial and Industrial Propane Tank Sizing

In commercial or industrial settings, where the heating requirements are more substantial, a larger propane tank may be necessary. A 1,000-gallon propane tank can be an ideal choice, as it can hold up to 800 gallons of propane when full. This tank size can provide between 114 to 144 hours of operation for a 150,000 BTU heater, making it suitable for large commercial or agricultural installations with high-volume gas needs.

Propane Tank Dimensions

The physical dimensions of propane tanks can vary depending on the manufacturer, but here are some typical measurements:

Tank Size Length Diameter
500-gallon 9′ 11″ 37.5″
1,000-gallon 16′ 2″ 41″

It’s important to note that these dimensions may differ slightly, so it’s essential to consult with the tank manufacturer or a professional installer to ensure the tank can be properly accommodated at your installation site.

Propane Line Sizing and Installation

When it comes to DIY installation, it’s crucial to follow proper safety guidelines and local regulations. For a 150,000 BTU heater with a 250-foot gas line run, a 1/2″ ID copper line is typically sufficient. However, the exact size of the propane line will depend on the length of the run and the BTU output of the heater.

When burying a propane line, it’s recommended to use schedule K copper or a similar material that is rated for direct burial. This ensures the integrity and safety of the propane line installation.


In summary, the size of the propane tank needed for a 150,000 BTU heater depends on the intended use and the fuel consumption requirements. For residential applications, a 500-gallon propane tank is generally sufficient, while for commercial or industrial settings, a 1,000-gallon tank may be more appropriate. Proper installation and adherence to local regulations are crucial for ensuring the safe and efficient operation of your propane-powered heating system.

Remember, it’s always best to consult with a professional installer or a propane supplier to ensure you select the right propane tank size and properly install the necessary components for your 150,000 BTU heater.